Laser based Spectrometer for VOCs MonitoringSteve Williams
Los Gatos Research develops optical spectroscopy instruments to detect trace gases. Their incoherent cavity ring down spectroscopy (iCRDS) system can detect volatile organic compounds (VOCs) like trichloroethylene (TCE) and tetrachloroethylene (PCE) at low parts-per-billion concentrations. They deployed the iCRDS system at the Moffett Federal Airfield Superfund site to continuously monitor VOCs in tunnel air and breathing zones. Measurements showed VOC levels increasing when remediation fans were turned off and decreasing when fans turned back on, demonstrating the system's ability to evaluate remediation effectiveness in real-time. The iCRDS provided sensitive, autonomous VOC monitoring with results matching previous grab
This document is an air quality analysis certificate for a sample taken from a compressor owned by I-Dive Tec Rec Centres PLC. The sample passed specifications for breathing air. Key findings include:
- The sample was taken on 10/16/2012 and analyzed on 10/29/2012.
- Results showed the sample met specifications for oxygen, nitrogen, carbon monoxide, carbon dioxide, total hydrocarbons and oil/particulate levels.
- The certificate is valid until the next semi-annual sample is due on 4/16/2013.
A Combined Ozone Remedy for a Mixed VOC DNAPL Source ZoneChapman Ross, P.E.
Background/Objectives. In 2003, 1,300 drums and over 3,000 tons of soil were excavated from a drum disposal area in New England. Residual DNAPL created a 2,500 foot long plume that includes chlorobenzenes, toluene, and chlorinated ethenes. The plume discharges to a wetland and has led to vapor intrusion concerns at downgradient properties. Full-scale source zone remediation has been implemented to mitigate potential risks to ecological and human receptors.
Approach/Activities. Following extensive site characterization, bench-scale testing, and a successful field pilot test, the full-scale source zone remedy began in November 2010. The combined remedy approach uses physical, chemical, and biological treatment mechanisms to destroy the residual DNAPL in the vadose and saturated zones. Soil vapor extraction (SVE) and air sparging target the more volatile compounds, while in situ ozone injection (IOI) targets the less volatile compounds such as chlorobenzenes. Aerobic biological activity is also likely enhanced as a result of oxygen injection from IOI and air sparging. Three ozone injection systems deliver a total of 100 lbs of ozone per day to the subsurface; the SVE system extracts soil vapor at a rate of 650 scfm; the air sparge system continuously sparges air at 50 scfm at approximately 30 psi.
Results/Lessons Learned. Performance monitoring includes analysis of VOC concentrations in soil, soil gas, and groundwater. Quarterly low-flow groundwater sampling has shown substantial decreases in groundwater VOC concentrations relative to baseline. In the first six months of operation, 18 of the 20 monitoring wells sampled showed decreases in total VOC concentrations ranging from 14 to 97% with an average decrease of 57%. Furthermore, the mass discharge of total VOCs in groundwater from the source area has decreased from approximately 105 g/day before pilot-test start-up to less than 4 g/day. Concentrations of VOCs in soil gas are monitored in real-time by an automated soil gas monitoring system equipped with a photoionization detector (PID), and on a periodic basis with Waterloo Membrane Samplers™ that provide a speciated analysis of VOCs in soil gas. Of the 47 soil gas monitoring points that were sampled during the first six months of operation, 36 show decreasing trends in soil gas TVOC concentrations. Minimal rebound was observed in soil gas concentrations after treatment was temporarily suspended. Performance monitoring data have informed periodic system optimization to increase the efficiency of the remedy. These results indicate that the combined remedial technologies are effectively reducing source mass and mass discharge, and that the aggressive two year remedial time-frame will likely be met.
Global BioSciences sells sustainable remediation technologies through business partners. Their Butane Biostimulation technology uses butane gas to stimulate microbial growth and degradation of contaminants like chlorinated solvents, petroleum hydrocarbons, and MTBE in soil and groundwater. It is a low-cost solution that is easy to implement and has treated contamination at numerous pilot and full-scale sites internationally.
This document discusses the applications of nuclear techniques in chemistry. It covers the principles and applications of neutron activation analysis, isotope dilution techniques, radiometric titration, nuclear dating, and radiochemical preparation methods for environmental sample analysis. The key topics covered are the principles of neutron activation analysis, isotope dilution, nuclear dating techniques using various radioactive isotope decays, and sample preparation methods for analyzing radionuclides in environmental samples like seawater, soil and air. The document provides details on the theoretical background and procedures for quantitative analysis of elements and isotopes using nuclear techniques.
Dr tyagi lecture presentn bbit enviro final 12 feb10ECRD2015
This document discusses techniques for measuring organic pollutants like benzene and benzo(a)pyrene as well as metals in ambient air. It provides an overview of the Central Pollution Control Board of India and their role in monitoring air quality and enforcing standards. Specific analytical techniques are described for sampling and analyzing polycyclic aromatic hydrocarbons and other organic compounds in air particulate matter using gas chromatography.
Clean production for (ultra) high vacuum applicationThemadagen
1) The document discusses various cleaning strategies and techniques for producing clean components for use in ultra-high vacuum applications.
2) A step-by-step cleaning process is recommended, starting with pre-cleaning to remove films and dirt, followed by particle removal using wet cleaning or ultrasonic techniques, and finally molecular cleaning such as baking or plasma to remove last molecules.
3) Wet cleaning using ultrasonic cleaning with deionized water is described as able to achieve high or ultra-high vacuum if combined with baking. Proper monitoring of cleaning parameters is important to avoid damage.
Laser based Spectrometer for VOCs MonitoringSteve Williams
Los Gatos Research develops optical spectroscopy instruments to detect trace gases. Their incoherent cavity ring down spectroscopy (iCRDS) system can detect volatile organic compounds (VOCs) like trichloroethylene (TCE) and tetrachloroethylene (PCE) at low parts-per-billion concentrations. They deployed the iCRDS system at the Moffett Federal Airfield Superfund site to continuously monitor VOCs in tunnel air and breathing zones. Measurements showed VOC levels increasing when remediation fans were turned off and decreasing when fans turned back on, demonstrating the system's ability to evaluate remediation effectiveness in real-time. The iCRDS provided sensitive, autonomous VOC monitoring with results matching previous grab
This document is an air quality analysis certificate for a sample taken from a compressor owned by I-Dive Tec Rec Centres PLC. The sample passed specifications for breathing air. Key findings include:
- The sample was taken on 10/16/2012 and analyzed on 10/29/2012.
- Results showed the sample met specifications for oxygen, nitrogen, carbon monoxide, carbon dioxide, total hydrocarbons and oil/particulate levels.
- The certificate is valid until the next semi-annual sample is due on 4/16/2013.
A Combined Ozone Remedy for a Mixed VOC DNAPL Source ZoneChapman Ross, P.E.
Background/Objectives. In 2003, 1,300 drums and over 3,000 tons of soil were excavated from a drum disposal area in New England. Residual DNAPL created a 2,500 foot long plume that includes chlorobenzenes, toluene, and chlorinated ethenes. The plume discharges to a wetland and has led to vapor intrusion concerns at downgradient properties. Full-scale source zone remediation has been implemented to mitigate potential risks to ecological and human receptors.
Approach/Activities. Following extensive site characterization, bench-scale testing, and a successful field pilot test, the full-scale source zone remedy began in November 2010. The combined remedy approach uses physical, chemical, and biological treatment mechanisms to destroy the residual DNAPL in the vadose and saturated zones. Soil vapor extraction (SVE) and air sparging target the more volatile compounds, while in situ ozone injection (IOI) targets the less volatile compounds such as chlorobenzenes. Aerobic biological activity is also likely enhanced as a result of oxygen injection from IOI and air sparging. Three ozone injection systems deliver a total of 100 lbs of ozone per day to the subsurface; the SVE system extracts soil vapor at a rate of 650 scfm; the air sparge system continuously sparges air at 50 scfm at approximately 30 psi.
Results/Lessons Learned. Performance monitoring includes analysis of VOC concentrations in soil, soil gas, and groundwater. Quarterly low-flow groundwater sampling has shown substantial decreases in groundwater VOC concentrations relative to baseline. In the first six months of operation, 18 of the 20 monitoring wells sampled showed decreases in total VOC concentrations ranging from 14 to 97% with an average decrease of 57%. Furthermore, the mass discharge of total VOCs in groundwater from the source area has decreased from approximately 105 g/day before pilot-test start-up to less than 4 g/day. Concentrations of VOCs in soil gas are monitored in real-time by an automated soil gas monitoring system equipped with a photoionization detector (PID), and on a periodic basis with Waterloo Membrane Samplers™ that provide a speciated analysis of VOCs in soil gas. Of the 47 soil gas monitoring points that were sampled during the first six months of operation, 36 show decreasing trends in soil gas TVOC concentrations. Minimal rebound was observed in soil gas concentrations after treatment was temporarily suspended. Performance monitoring data have informed periodic system optimization to increase the efficiency of the remedy. These results indicate that the combined remedial technologies are effectively reducing source mass and mass discharge, and that the aggressive two year remedial time-frame will likely be met.
Global BioSciences sells sustainable remediation technologies through business partners. Their Butane Biostimulation technology uses butane gas to stimulate microbial growth and degradation of contaminants like chlorinated solvents, petroleum hydrocarbons, and MTBE in soil and groundwater. It is a low-cost solution that is easy to implement and has treated contamination at numerous pilot and full-scale sites internationally.
This document discusses the applications of nuclear techniques in chemistry. It covers the principles and applications of neutron activation analysis, isotope dilution techniques, radiometric titration, nuclear dating, and radiochemical preparation methods for environmental sample analysis. The key topics covered are the principles of neutron activation analysis, isotope dilution, nuclear dating techniques using various radioactive isotope decays, and sample preparation methods for analyzing radionuclides in environmental samples like seawater, soil and air. The document provides details on the theoretical background and procedures for quantitative analysis of elements and isotopes using nuclear techniques.
Dr tyagi lecture presentn bbit enviro final 12 feb10ECRD2015
This document discusses techniques for measuring organic pollutants like benzene and benzo(a)pyrene as well as metals in ambient air. It provides an overview of the Central Pollution Control Board of India and their role in monitoring air quality and enforcing standards. Specific analytical techniques are described for sampling and analyzing polycyclic aromatic hydrocarbons and other organic compounds in air particulate matter using gas chromatography.
Clean production for (ultra) high vacuum applicationThemadagen
1) The document discusses various cleaning strategies and techniques for producing clean components for use in ultra-high vacuum applications.
2) A step-by-step cleaning process is recommended, starting with pre-cleaning to remove films and dirt, followed by particle removal using wet cleaning or ultrasonic techniques, and finally molecular cleaning such as baking or plasma to remove last molecules.
3) Wet cleaning using ultrasonic cleaning with deionized water is described as able to achieve high or ultra-high vacuum if combined with baking. Proper monitoring of cleaning parameters is important to avoid damage.
Callide oxyfuel research project, Part 1: Removal of SOx, NOx and mercury gas...Global CCS Institute
To highlight the research and achievements of Australian researchers, the Global CCS Institute with ANLEC R&D will hold a series of webinars throughout 2016. Each webinar will highlight a specific ANLEC R&D research project and the relevant report found on the Institute’s website. This was the second webinar of the series, which focused on experiments quantifying and optimising the removal of SOx, NOx and mercury gases using compressed gaseous slip streams from the CPU as part of the Callide Oxyfuel Project.
The Callide Oxyfuel Project in central Queensland, Australia, has demonstrated carbon capture using oxyfuel technology on a retrofitted 30 MWe boiler. The project comprised of 2 x 330 t/day air separation units, a 30 MWe oxy-fuel boiler and a 75 t/day CO2 capture plant. The plant was commissioned in 2012 and operated for three years achieving nominally 10,000 hours of industrial operation in oxy-combustion mode.
The project has been able to demonstrate CO2 capture rates from the Oxyfuel flue gas stream to the CO2 capture plant in excess of 85%, and producing a high quality CO2 product suitable for geological storage. In addition, other benefits observed from the oxy-firing and CO2 capture demonstration have included: (i) increased boiler combustion efficiency; (ii) greater than 50% reduction in stack NOx mass emission rates; and (iii) almost complete removal of all toxic gaseous emissions including SOx, NOx, particulates and trace elements from the flue gas stream in the CO2 capture plant (CPU).
This webinar provided a technical presentation of experiments quantifying and optimising the removal of SOx, NOx and mercury gases using compressed gaseous slip streams from the CPU, complemented by plant measurements by the University Of Newcastle, supported by Australian National Low Emission R&D. This webinar was presented by Professor Terry Wall and Dr Rohan Stanger from The University of Newcastle, Australia.
This document discusses the use of nitrate reductase enzymes for analytical chemistry applications such as nitrate analysis. Specifically:
1) Enzymes such as nitrate reductase can be used as alternatives to cadmium for photometric nitrate determinations in water samples, providing selectivity, sensitivity, specificity, and safety advantages over traditional methods.
2) Nitrate reductase produced through recombinant techniques provides guaranteed lot-to-lot reproducibility, increased production capacity, and engineered stability for analytical applications.
3) Validation studies have demonstrated nitrate reductase methods are statistically equivalent to cadmium-based methods for nitrate analysis and the enzyme-based methods have been approved for regulatory compliance monitoring
Direct Push Optical Screening Tool For Chlorinated Solvent Dnapl St Germain 1...stgermain
The document summarizes an innovative new optical screening tool called DYE-LIF that uses indicator dyes to detect chlorinated solvent DNAPL contamination. Existing optical screening tools like LIF work by detecting fluorescent compounds in petroleum hydrocarbons but cannot detect chlorinated solvents, which are not fluorescent. DYE-LIF addresses this by introducing a fluorescent dye into the probe that solvates in chlorinated DNAPL, allowing detection. Recent prototypes have shown success detecting thin layers of TCE and PCE in sand in lab and field tests. The high resolution data provided could help characterization and remediation design.
Callide oxyfuel research project, Part 2: CO2 quality control prior to compre...Global CCS Institute
The webinar summarized research from the Callide oxyfuel project in Australia. It discussed measurements taken during transitions between air and oxy-fuel firing in the plant's fabric filter. The measurements found the filter captured over 90% of mercury, with burner configuration most influencing mercury levels. Sulfur trioxide measurements were very low at 0.6-3.6 ppm. The webinar also reviewed a low-pressure caustic scrubber's role in removing sulfur dioxide, nitrogen dioxide, and mercury before compression. The scrubber was effective but may not be the most economic solution for a commercial plant.
This document discusses using in-line IR spectroscopy to analyze reactions in continuous flow systems. It describes challenges in analyzing continuous reactions and how ReactIR can provide real-time monitoring without sampling. Case studies are presented where ReactIR was used to optimize a Doebner modification reaction in a few hours, monitor a hazardous reaction involving hydrazine for safety, and troubleshoot a multi-step synthesis. ReactIR allows rapid screening and optimization of reaction conditions as well as safer handling of dangerous chemicals through continuous monitoring.
The importance of clean drinking water is recognized worldwide. In the U.S., the Environmental Protection Agency (EPA) has established Maximum Contamination Limits (MCL) for monitoring toxic contaminants that may cause adverse health effects. Other ions, such as chloride and sulfate are monitored for aesthetic characteristics under the U.S. National Secondary Drinking Water Standards guidelines. Similar regulations for clean drinking water have been implemented in other industrialized countries. Ion Chromatography (IC) methods have been approved for compliance monitoring including U.S. EPA 300.0 in 1993. Learn about using ion chromatography for the determination of inorganic anions, perchlorate and chromate for compliance monitoring according to U.S. EPA Methods 300.0, 314 and 218.6.
Dom Hebrault presented on using real time in situ FTIR analytics to enhance development and control of continuous processes. He discussed three case studies: [1] rapidly optimizing a Doebner modification reaction using inline FTIR to monitor concentrations in real time; [2] safely monitoring a hazardous indazole synthesis using hydrazine in flow; and [3] improving product quality of a Grignard reaction for drug synthesis from 40% to 1% impurity using inline FTIR process control. The case studies demonstrated how inline FTIR can provide major benefits for continuous flow reaction optimization, monitoring hazardous substances, and process quality control.
Optical Screening Tools For Characterizing NAPL Source Zonesstgermain
A presentation given to Michigan Association of Environmental Professionals last spring. Heavy focus on heterogeneity and difficulty of determining NAPL with monitoring wells and traditional analytical chemistry of dissolved phase.
LC-IR Applications In Polymer Related Industriesmzhou45
LC-IR Application Overview for Polymer Related Industries with Many Case Studies: characterize copolymer compositions across MWD and de-formulate complex polymer mixtures
Monitoring and maintaining water purity are important to the power and electronics industries. In the both of these industries, impurities must be minimized and monitored to prevent corrosion or scaling, and degradation in demineralization processes. Learn about the analysis of ppb concentrations of ionic contaminants in high purity water using two easy methods: a direct large volume injection and concentration of a large volume injection, using electrolytically generated hydroxide eluents on a Reagent-Free™ Ion Chromatography system (RFIC™).
Enzyme Based Analytical Chemistry - Nitrate and the U.S. EPAAnna-Marie Davidson
This document discusses the use of nitrate reductase enzymes for analytical chemistry applications such as nitrate analysis. It provides background on how enzymes work and their advantages for analysis, including selectivity, sensitivity, specificity, and safety. It then focuses on the production and use of nitrate reductase enzymes, including their validation for nitrate testing according to EPA standards. The document promotes the use of these enzymes as a non-toxic alternative to cadmium-based methods for nitrate analysis in areas like water quality monitoring.
This document summarizes a new method for detecting mercury (Hg) at parts-per-billion (ppb) levels in air and water samples using photoionization detection (PID). Hg is collected from air samples using a Hopcalite tube and dissolved in acid. Water samples are treated with acid and a reducing agent to convert Hg salts to elemental Hg. Both sample types are purged with nitrogen and injected into a gas chromatograph coupled to a PID. The PID uses a 10.6 eV lamp to ionize Hg, which has an ionization potential of 10.4 eV. This allows for specific detection of Hg without interferences. The method was able to detect Hg standards down to 10 ppb and showed potential
This document summarizes research on the partial sulfonation of polyaniline (PANI) nanofibers. The researchers aim to sulfonate only the surface of the nanofibers to impart a negative charge, while keeping the fiber core intact. They expose PANI nanofibers to sodium sulfite to sulfonate the surface. FTIR data confirms sulfonation through new peaks. Short deprotonation times in base limit sulfonation and fiber degradation, while longer times lead to more degradation due to increased solubility from higher sulfonation. The extent and uniformity of sulfonation remains unclear and will be examined further. Partial sulfonation could allow attachment of gold nanoparticles to
No single liquid chromatography (LC) detector delivers ideal results. Often with LC detectors one analyte responds more strongly than another, or may not respond at all. What is most desired is the ability to accurately measure a wide range of analytes with consistent response simultaneously.
Charged Aerosol detection (CAD) is a mass sensitive technique for determining levels of any non-volatile and many semi-volatile analytes after separation by liquid chromatography. This technique provides consistent analyte response independent of chemical characteristics and gives greater sensitivity over a wider dynamic range. An analytes response does not depend on optical properties, like with UV-vis absorbance, or the ability to ionize, as with mass spectrometry (MS). The presence of chromophoric groups, radiolabels, ionizable moieties, or chemical derivatization is needed for detection.
This document describes a new method for extracting trace amounts of mercury from natural waters using silver and gold nanoparticles impregnated in nylon membrane filters. Water samples are treated to convert all mercury species to Hg2+ and then reduced to elemental Hg0. The mercury is then collected on the nanoparticle-coated membrane filters during filtration. Mercury levels are then determined by thermal desorption from the filters using a mercury analyzer. This new method achieves a lower limit of detection of 0.04 ng compared to the traditional cold vapor generation method, and avoids additional sample treatment and contamination risks. Mercury was also found to be stable on the filters for at least 5 months without loss.
This document provides a summary of air quality monitoring and standards from the Environmental Protection Commission. It discusses the EPA's criteria pollutants including ozone, particulate matter, nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. It reviews historical ozone standards and compliance in the Tampa area. It also discusses new monitoring requirements for nitrogen dioxide near major roads and plans to implement this monitoring in Hillsborough County.
Spartan Environmental Technologies supplies ozone water treatment and advanced oxidation systems. They provide both skid-mounted integrated systems and individual equipment components. They offer a range of support services including laboratory testing, pilot testing, engineering support, and equipment servicing. Their ozone systems are used for applications like drinking water treatment, cooling water treatment, industrial wastewater treatment, and groundwater remediation. They also represent ESCO International in supplying advanced oxidation processes using technologies like UV/ozone, UV/peroxide, and ozone/peroxide systems.
The document discusses various methods for measuring organic carbon levels in wastewater, including parameters like TOC, DOC, COD, and BOD. It describes WTW spectral sensors called CarboVis and NiCaVis that can continuously and non-destructively measure COD, TOC, and other parameters by analyzing the full UV-visible light spectrum absorbed by samples. The sensors offer high measurement reliability and simplicity compared to traditional lab methods. Key applications are monitoring organic loads at wastewater treatment plant inlets and outlets.
The client, City of Beloit, wanted to investigate adding hydrogen gas to vehicle engines to reduce emissions and increase fuel economy. Testing was done on a Harley motorcycle by adding hydrogen produced through electrolysis of water to the engine's air-fuel mixture. Various tests were conducted at different engine speeds and electrolyzer outputs. While some tests showed reductions in harmful emissions like CO and HC, overall the results did not consistently show improvements and highlighted areas for further optimization like fuel management systems and preventing irregular burning. Future work is needed on the electrolyzer interface with engines and fuel systems.
Callide oxyfuel research project, Part 1: Removal of SOx, NOx and mercury gas...Global CCS Institute
To highlight the research and achievements of Australian researchers, the Global CCS Institute with ANLEC R&D will hold a series of webinars throughout 2016. Each webinar will highlight a specific ANLEC R&D research project and the relevant report found on the Institute’s website. This was the second webinar of the series, which focused on experiments quantifying and optimising the removal of SOx, NOx and mercury gases using compressed gaseous slip streams from the CPU as part of the Callide Oxyfuel Project.
The Callide Oxyfuel Project in central Queensland, Australia, has demonstrated carbon capture using oxyfuel technology on a retrofitted 30 MWe boiler. The project comprised of 2 x 330 t/day air separation units, a 30 MWe oxy-fuel boiler and a 75 t/day CO2 capture plant. The plant was commissioned in 2012 and operated for three years achieving nominally 10,000 hours of industrial operation in oxy-combustion mode.
The project has been able to demonstrate CO2 capture rates from the Oxyfuel flue gas stream to the CO2 capture plant in excess of 85%, and producing a high quality CO2 product suitable for geological storage. In addition, other benefits observed from the oxy-firing and CO2 capture demonstration have included: (i) increased boiler combustion efficiency; (ii) greater than 50% reduction in stack NOx mass emission rates; and (iii) almost complete removal of all toxic gaseous emissions including SOx, NOx, particulates and trace elements from the flue gas stream in the CO2 capture plant (CPU).
This webinar provided a technical presentation of experiments quantifying and optimising the removal of SOx, NOx and mercury gases using compressed gaseous slip streams from the CPU, complemented by plant measurements by the University Of Newcastle, supported by Australian National Low Emission R&D. This webinar was presented by Professor Terry Wall and Dr Rohan Stanger from The University of Newcastle, Australia.
This document discusses the use of nitrate reductase enzymes for analytical chemistry applications such as nitrate analysis. Specifically:
1) Enzymes such as nitrate reductase can be used as alternatives to cadmium for photometric nitrate determinations in water samples, providing selectivity, sensitivity, specificity, and safety advantages over traditional methods.
2) Nitrate reductase produced through recombinant techniques provides guaranteed lot-to-lot reproducibility, increased production capacity, and engineered stability for analytical applications.
3) Validation studies have demonstrated nitrate reductase methods are statistically equivalent to cadmium-based methods for nitrate analysis and the enzyme-based methods have been approved for regulatory compliance monitoring
Direct Push Optical Screening Tool For Chlorinated Solvent Dnapl St Germain 1...stgermain
The document summarizes an innovative new optical screening tool called DYE-LIF that uses indicator dyes to detect chlorinated solvent DNAPL contamination. Existing optical screening tools like LIF work by detecting fluorescent compounds in petroleum hydrocarbons but cannot detect chlorinated solvents, which are not fluorescent. DYE-LIF addresses this by introducing a fluorescent dye into the probe that solvates in chlorinated DNAPL, allowing detection. Recent prototypes have shown success detecting thin layers of TCE and PCE in sand in lab and field tests. The high resolution data provided could help characterization and remediation design.
Callide oxyfuel research project, Part 2: CO2 quality control prior to compre...Global CCS Institute
The webinar summarized research from the Callide oxyfuel project in Australia. It discussed measurements taken during transitions between air and oxy-fuel firing in the plant's fabric filter. The measurements found the filter captured over 90% of mercury, with burner configuration most influencing mercury levels. Sulfur trioxide measurements were very low at 0.6-3.6 ppm. The webinar also reviewed a low-pressure caustic scrubber's role in removing sulfur dioxide, nitrogen dioxide, and mercury before compression. The scrubber was effective but may not be the most economic solution for a commercial plant.
This document discusses using in-line IR spectroscopy to analyze reactions in continuous flow systems. It describes challenges in analyzing continuous reactions and how ReactIR can provide real-time monitoring without sampling. Case studies are presented where ReactIR was used to optimize a Doebner modification reaction in a few hours, monitor a hazardous reaction involving hydrazine for safety, and troubleshoot a multi-step synthesis. ReactIR allows rapid screening and optimization of reaction conditions as well as safer handling of dangerous chemicals through continuous monitoring.
The importance of clean drinking water is recognized worldwide. In the U.S., the Environmental Protection Agency (EPA) has established Maximum Contamination Limits (MCL) for monitoring toxic contaminants that may cause adverse health effects. Other ions, such as chloride and sulfate are monitored for aesthetic characteristics under the U.S. National Secondary Drinking Water Standards guidelines. Similar regulations for clean drinking water have been implemented in other industrialized countries. Ion Chromatography (IC) methods have been approved for compliance monitoring including U.S. EPA 300.0 in 1993. Learn about using ion chromatography for the determination of inorganic anions, perchlorate and chromate for compliance monitoring according to U.S. EPA Methods 300.0, 314 and 218.6.
Dom Hebrault presented on using real time in situ FTIR analytics to enhance development and control of continuous processes. He discussed three case studies: [1] rapidly optimizing a Doebner modification reaction using inline FTIR to monitor concentrations in real time; [2] safely monitoring a hazardous indazole synthesis using hydrazine in flow; and [3] improving product quality of a Grignard reaction for drug synthesis from 40% to 1% impurity using inline FTIR process control. The case studies demonstrated how inline FTIR can provide major benefits for continuous flow reaction optimization, monitoring hazardous substances, and process quality control.
Optical Screening Tools For Characterizing NAPL Source Zonesstgermain
A presentation given to Michigan Association of Environmental Professionals last spring. Heavy focus on heterogeneity and difficulty of determining NAPL with monitoring wells and traditional analytical chemistry of dissolved phase.
LC-IR Applications In Polymer Related Industriesmzhou45
LC-IR Application Overview for Polymer Related Industries with Many Case Studies: characterize copolymer compositions across MWD and de-formulate complex polymer mixtures
Monitoring and maintaining water purity are important to the power and electronics industries. In the both of these industries, impurities must be minimized and monitored to prevent corrosion or scaling, and degradation in demineralization processes. Learn about the analysis of ppb concentrations of ionic contaminants in high purity water using two easy methods: a direct large volume injection and concentration of a large volume injection, using electrolytically generated hydroxide eluents on a Reagent-Free™ Ion Chromatography system (RFIC™).
Enzyme Based Analytical Chemistry - Nitrate and the U.S. EPAAnna-Marie Davidson
This document discusses the use of nitrate reductase enzymes for analytical chemistry applications such as nitrate analysis. It provides background on how enzymes work and their advantages for analysis, including selectivity, sensitivity, specificity, and safety. It then focuses on the production and use of nitrate reductase enzymes, including their validation for nitrate testing according to EPA standards. The document promotes the use of these enzymes as a non-toxic alternative to cadmium-based methods for nitrate analysis in areas like water quality monitoring.
This document summarizes a new method for detecting mercury (Hg) at parts-per-billion (ppb) levels in air and water samples using photoionization detection (PID). Hg is collected from air samples using a Hopcalite tube and dissolved in acid. Water samples are treated with acid and a reducing agent to convert Hg salts to elemental Hg. Both sample types are purged with nitrogen and injected into a gas chromatograph coupled to a PID. The PID uses a 10.6 eV lamp to ionize Hg, which has an ionization potential of 10.4 eV. This allows for specific detection of Hg without interferences. The method was able to detect Hg standards down to 10 ppb and showed potential
This document summarizes research on the partial sulfonation of polyaniline (PANI) nanofibers. The researchers aim to sulfonate only the surface of the nanofibers to impart a negative charge, while keeping the fiber core intact. They expose PANI nanofibers to sodium sulfite to sulfonate the surface. FTIR data confirms sulfonation through new peaks. Short deprotonation times in base limit sulfonation and fiber degradation, while longer times lead to more degradation due to increased solubility from higher sulfonation. The extent and uniformity of sulfonation remains unclear and will be examined further. Partial sulfonation could allow attachment of gold nanoparticles to
No single liquid chromatography (LC) detector delivers ideal results. Often with LC detectors one analyte responds more strongly than another, or may not respond at all. What is most desired is the ability to accurately measure a wide range of analytes with consistent response simultaneously.
Charged Aerosol detection (CAD) is a mass sensitive technique for determining levels of any non-volatile and many semi-volatile analytes after separation by liquid chromatography. This technique provides consistent analyte response independent of chemical characteristics and gives greater sensitivity over a wider dynamic range. An analytes response does not depend on optical properties, like with UV-vis absorbance, or the ability to ionize, as with mass spectrometry (MS). The presence of chromophoric groups, radiolabels, ionizable moieties, or chemical derivatization is needed for detection.
This document describes a new method for extracting trace amounts of mercury from natural waters using silver and gold nanoparticles impregnated in nylon membrane filters. Water samples are treated to convert all mercury species to Hg2+ and then reduced to elemental Hg0. The mercury is then collected on the nanoparticle-coated membrane filters during filtration. Mercury levels are then determined by thermal desorption from the filters using a mercury analyzer. This new method achieves a lower limit of detection of 0.04 ng compared to the traditional cold vapor generation method, and avoids additional sample treatment and contamination risks. Mercury was also found to be stable on the filters for at least 5 months without loss.
This document provides a summary of air quality monitoring and standards from the Environmental Protection Commission. It discusses the EPA's criteria pollutants including ozone, particulate matter, nitrogen dioxide, sulfur dioxide, carbon monoxide, and lead. It reviews historical ozone standards and compliance in the Tampa area. It also discusses new monitoring requirements for nitrogen dioxide near major roads and plans to implement this monitoring in Hillsborough County.
Spartan Environmental Technologies supplies ozone water treatment and advanced oxidation systems. They provide both skid-mounted integrated systems and individual equipment components. They offer a range of support services including laboratory testing, pilot testing, engineering support, and equipment servicing. Their ozone systems are used for applications like drinking water treatment, cooling water treatment, industrial wastewater treatment, and groundwater remediation. They also represent ESCO International in supplying advanced oxidation processes using technologies like UV/ozone, UV/peroxide, and ozone/peroxide systems.
The document discusses various methods for measuring organic carbon levels in wastewater, including parameters like TOC, DOC, COD, and BOD. It describes WTW spectral sensors called CarboVis and NiCaVis that can continuously and non-destructively measure COD, TOC, and other parameters by analyzing the full UV-visible light spectrum absorbed by samples. The sensors offer high measurement reliability and simplicity compared to traditional lab methods. Key applications are monitoring organic loads at wastewater treatment plant inlets and outlets.
The client, City of Beloit, wanted to investigate adding hydrogen gas to vehicle engines to reduce emissions and increase fuel economy. Testing was done on a Harley motorcycle by adding hydrogen produced through electrolysis of water to the engine's air-fuel mixture. Various tests were conducted at different engine speeds and electrolyzer outputs. While some tests showed reductions in harmful emissions like CO and HC, overall the results did not consistently show improvements and highlighted areas for further optimization like fuel management systems and preventing irregular burning. Future work is needed on the electrolyzer interface with engines and fuel systems.
This document discusses the use of pure oxygen in water and wastewater treatment. It outlines several applications of pure oxygen including odor control, replacing traditional aeration, and lake oxygenation. It then describes traditional aeration methods and their limitations. The document discusses how pure oxygen systems like UNOX and OASES work, and the advantages of using pure oxygen over air due to its higher solubility. Several pure oxygen technologies are presented for applications like odor control, wastewater treatment, and groundwater remediation. Product offerings from PCI including the DOCS oxygen generation systems are described along with their lower operating costs compared to other oxygen production methods.
The document defines and discusses the phenomenon of low-temperature flow-accelerated corrosion (FAC), which can occur below 200°F. It summarizes operating experience with low-temperature FAC at several nuclear plants. The Electric Power Research Institute (EPRI) found susceptible areas in pressurized water reactors (PWRs) and boiling water reactors (BWRs) and made recommendations for inspections and analyses. The impact on corrosion susceptibility inspection projects is that piping downstream of condensate filters and demineralizers in PWRs, as well as low-oxygen areas in BWRs, should not be excluded from evaluations due to low temperatures.
This document discusses improvements in nitrogen dioxide (NO2) measurement technology. It describes weaknesses in the traditional chemiluminescence method, such as indirect NO2 measurement and susceptibility to drift. The document then introduces the T500U analyzer, which measures NO2 directly using cavity attenuated phase shift technology, without conversions or ambient interferences. Maintenance of the T500U is minimal, involving annual filter changes and biennial pump replacement. It offers enhanced specifications compared to previous analyzer models.
Compact Hydrogen Peroxide Sensor for Sterilization Cycle MonitoringClinton Smith
Physical Sciences Inc. developed a compact hydrogen peroxide sensor using photoacoustic spectroscopy to monitor sterilization cycles. Strict limits on residual vapor phase hydrogen peroxide require detection down to 10 parts per billion, challenging with current technology. Through spectroscopic modeling and acoustic resonator optimization, the sensor achieves a detection limit of approximately 32 parts per billion of hydrogen peroxide in 10,000 parts per million of water vapor interference. Experimental results validate the sensor performance compared to an industry standard. The low-cost, field-deployable sensor will aid pharmaceutical manufacturing in ensuring sterile conditions.
The document discusses LI-COR's trace gas analyzer platform and its applications. The platform uses optical feedback cavity enhanced absorption spectroscopy and can measure methane, carbon dioxide, and nitrous oxide. It is designed for flexibility in field research. Applications discussed include measuring soil gas fluxes, long-term atmospheric monitoring, urban and mobile emission monitoring, measuring pCO2 in seawater, and profiling gas storage fluxes.
The MultiGas 2030 CEM is an FTIR-based gas analyzer designed to continuously monitor emissions in effluent streams containing up to 40% water. It can measure multiple target emissions like NOx, SO2, N2O, CO, HCl, HF, CH4, H2O, CO2 and NH3 with one analyzer. The robust analyzer produces high resolution spectra to detect components accurately in high moisture streams without water removal. It has low maintenance needs and costs due to integrated components and permanent calibration spectra.
1) The document describes modeling the ozonolysis reaction of trans-2-butene in a multi-inlet flow reactor using a system of ODEs solved with kinetic simulation software.
2) Comparisons between the model and experimental data show the yield of vinoxy is overestimated in the model and vinoxy depletion by oxygen is underestimated.
3) More reaction channels and accurate rate constants are needed to better model the depletion of vinoxy and oxygen. The mechanism for trans-2-butene ozonolysis needs further refinement.
Diamond Systems Landtec GEM5000 Complete PackageMadison Miller
The GEMTM5000 is designed specifically for use on landfills to monitor Landfill Gas (LFG) Collection & Control Systems. The GEMTM5000 samples and analyzes the methane, carbon dioxide and oxygen content of landfill gas with options for additional analysis.
1. The document provides instructions for using MiniSonic Pig and Sphere Detectors (MiniSonic-PSD) and Interface Detectors (MiniSonic-ISD) for monitoring pipelines.
2. It describes typical applications like pig detection in gas pipes and interface detection to monitor changes in petroleum products.
3. The document covers installation, setup and use of the detectors including connecting probes, setting measurement parameters, and menu navigation for calibration, testing and data collection.
The document provides an overview of membrane contactor technology from Membrana-Charlotte. It discusses the company and its products, including microporous membranes and membrane contactors. It describes how membrane contactors work using gas transfer principles and can be used for applications like gas absorption, degasification, and carbonation. Performance examples for oxygen and carbon dioxide removal are also presented.
2016-07-07_Rexonic Energy Services PresentationRidge Tullos
The document discusses Rexonic's ultrasound technology for cleaning oil well bores. It describes how the technology uses high-power ultrasound to disrupt adhesive forces holding particles like wax and paraffin in place, restoring permeability. Case studies show the technology increasing oil production up to 42% when applied onshore and offshore. The portable, non-chemical system is demonstrated to be an effective option for stimulating well productivity.
TDA has developed a sorbent that can remove harmful contaminants like arsenic, phosphorus, sulfur, and mercury from syngas at high temperatures. Bench-scale tests showed the sorbent was able to reduce contaminant concentrations to parts-per-billion levels and achieved high capacities for each contaminant. An engineering analysis estimated the capital cost for a 100 MWe syngas clean-up system using this sorbent would be around $28.9/kW.
Remediation of Volatile Organics in Groundwater Using In Situ Carbon (ISC) In...Antea Group
Presented at this year's Battelle Conference by Jack Sheldon, this presentation includes information comparing various forms of groundwater remediation tactics using In Situ Carbon (ISC) injections.
Analysis of Disinfection Byproducts by Ion Chromatography
In this presentation, the use of ion chromatography for the determination of bromate, chlorate and haloacetic acids for compliance monitoring according to various ISO standards (15061, 11206, 10304-4, 23631) and U.S. EPA Method 557 will be discussed. Examples will include IC methods using electrolytically generated hydroxide eluents on an RFIC™ system.
This document summarizes the development and deployment of low-cost sensor networks to monitor urban air quality. It outlines the objective to better understand air pollution in megacities using dense sensor arrays. It then describes current research at MIT using nonparametric regression techniques and particle counter modeling to improve data from low-cost sensors. Finally, it provides examples of sensor networks deployed in Hawaii, Boston, and Delhi to measure pollutants like PM, O3, CO, and VOCs.
- Geotech is a world leader in environmental technology and products based in Denver, CO with additional offices in the US and Europe. It has over 10,000 clients globally.
- The company offers remediation equipment for vapor, dissolved, and free phase contaminants including soil vapor extraction systems, air sparge systems, and carbon vessels.
- Soil vapor extraction uses vacuum wells to extract volatile contaminants from subsurface soil in vapor form, while air sparging injects air into saturated zones to flush contaminants into unsaturated zones for extraction. Proper sizing of blowers and conducting pilot tests is important for effectiveness.
What is an RPA CoE? Session 1 – CoE VisionDianaGray10
In the first session, we will review the organization's vision and how this has an impact on the COE Structure.
Topics covered:
• The role of a steering committee
• How do the organization’s priorities determine CoE Structure?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
Essentials of Automations: Exploring Attributes & Automation ParametersSafe Software
Building automations in FME Flow can save time, money, and help businesses scale by eliminating data silos and providing data to stakeholders in real-time. One essential component to orchestrating complex automations is the use of attributes & automation parameters (both formerly known as “keys”). In fact, it’s unlikely you’ll ever build an Automation without using these components, but what exactly are they?
Attributes & automation parameters enable the automation author to pass data values from one automation component to the next. During this webinar, our FME Flow Specialists will cover leveraging the three types of these output attributes & parameters in FME Flow: Event, Custom, and Automation. As a bonus, they’ll also be making use of the Split-Merge Block functionality.
You’ll leave this webinar with a better understanding of how to maximize the potential of automations by making use of attributes & automation parameters, with the ultimate goal of setting your enterprise integration workflows up on autopilot.
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Connector Corner: Seamlessly power UiPath Apps, GenAI with prebuilt connectorsDianaGray10
Join us to learn how UiPath Apps can directly and easily interact with prebuilt connectors via Integration Service--including Salesforce, ServiceNow, Open GenAI, and more.
The best part is you can achieve this without building a custom workflow! Say goodbye to the hassle of using separate automations to call APIs. By seamlessly integrating within App Studio, you can now easily streamline your workflow, while gaining direct access to our Connector Catalog of popular applications.
We’ll discuss and demo the benefits of UiPath Apps and connectors including:
Creating a compelling user experience for any software, without the limitations of APIs.
Accelerating the app creation process, saving time and effort
Enjoying high-performance CRUD (create, read, update, delete) operations, for
seamless data management.
Speakers:
Russell Alfeche, Technology Leader, RPA at qBotic and UiPath MVP
Charlie Greenberg, host
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
A Mix Chart displays historical data of numbers in a graphical or tabular form. The Kalyan Rajdhani Mix Chart specifically shows the results of a sequence of numbers over different periods.
Generating privacy-protected synthetic data using Secludy and MilvusZilliz
During this demo, the founders of Secludy will demonstrate how their system utilizes Milvus to store and manipulate embeddings for generating privacy-protected synthetic data. Their approach not only maintains the confidentiality of the original data but also enhances the utility and scalability of LLMs under privacy constraints. Attendees, including machine learning engineers, data scientists, and data managers, will witness first-hand how Secludy's integration with Milvus empowers organizations to harness the power of LLMs securely and efficiently.
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...Jason Yip
The typical problem in product engineering is not bad strategy, so much as “no strategy”. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If you’re wrong, it forces a correction. If you’re right, it helps create focus. I’ll share how I’ve approached this in the past, both what works and lessons for what didn’t work so well.
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/temporal-event-neural-networks-a-more-efficient-alternative-to-the-transformer-a-presentation-from-brainchip/
Chris Jones, Director of Product Management at BrainChip , presents the “Temporal Event Neural Networks: A More Efficient Alternative to the Transformer” tutorial at the May 2024 Embedded Vision Summit.
The expansion of AI services necessitates enhanced computational capabilities on edge devices. Temporal Event Neural Networks (TENNs), developed by BrainChip, represent a novel and highly efficient state-space network. TENNs demonstrate exceptional proficiency in handling multi-dimensional streaming data, facilitating advancements in object detection, action recognition, speech enhancement and language model/sequence generation. Through the utilization of polynomial-based continuous convolutions, TENNs streamline models, expedite training processes and significantly diminish memory requirements, achieving notable reductions of up to 50x in parameters and 5,000x in energy consumption compared to prevailing methodologies like transformers.
Integration with BrainChip’s Akida neuromorphic hardware IP further enhances TENNs’ capabilities, enabling the realization of highly capable, portable and passively cooled edge devices. This presentation delves into the technical innovations underlying TENNs, presents real-world benchmarks, and elucidates how this cutting-edge approach is positioned to revolutionize edge AI across diverse applications.
Your One-Stop Shop for Python Success: Top 10 US Python Development Providersakankshawande
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Digital Banking in the Cloud: How Citizens Bank Unlocked Their MainframePrecisely
Inconsistent user experience and siloed data, high costs, and changing customer expectations – Citizens Bank was experiencing these challenges while it was attempting to deliver a superior digital banking experience for its clients. Its core banking applications run on the mainframe and Citizens was using legacy utilities to get the critical mainframe data to feed customer-facing channels, like call centers, web, and mobile. Ultimately, this led to higher operating costs (MIPS), delayed response times, and longer time to market.
Ever-changing customer expectations demand more modern digital experiences, and the bank needed to find a solution that could provide real-time data to its customer channels with low latency and operating costs. Join this session to learn how Citizens is leveraging Precisely to replicate mainframe data to its customer channels and deliver on their “modern digital bank” experiences.
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-EfficiencyScyllaDB
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor IvaniukFwdays
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
2. Commercial Applications
OA Reduction Critical Environment
• Education • Waiting Areas
• Hospitality • Patient Rooms
• Worship • Burn Center
• Veterinary • Cancer Center
• Sports Arenas • TB Isolation
• Restaurants • DOD / State Dept.
Pathogen Control in the Space!
3. GPS’ ASHRAE BASED IAQ Software
1. Calculates Ventilation Rate Based on VRP
2. Simultaneously Calculates OA Based on IAQ Procedure with
NO Extra Time Required!
3. Consultants Can Add Extra Value to Owner
4. Reduces Engineering Labor
5. Lowers First Costs, Operating Costs and Provides Better IAQ
6. Easy to Use
4. ICC / IMC
• IMC 2006 & 2009 includes a provision for
engineered ventilation systems
– Section 403.2 – Exception
5. Does It Really Work?
• 3rd Party Testing On Previous Installations Prove
Compliance Using GPS’ Technology
– Holy Trinity Catholic School, Bay St. Louis, MS
» Testing Provided by Green Clean Air, Reston, VA
– Roanoke, VA Office Space
» Testing Provided by Air Advice
– Annistown ES – Coming Soon
» Testing will be provided by Bureau VERITAS
» Brad Gilber
6. UL 867
GPS-RN tested by Intertek/ETL to prove compliance to UL 867.
UL 867 Section 37.2.1. "The test is to be conducted in a chamber having a
volume of 950-1100 cubic feet with a minimum side dimension of 8 feet
and a maximum height dimension of 10 feet..."
New UL 867 as of December 21, 2007 requires ozone peak and chamber
testing
GPS results: Peak Ozone: 0.0042 PPM @ 2.0 inches from needles
Chamber: 0.007 PPM (24 hour test)
Max Allowed Limit: 0.05 PPM
GPS is 1/7 of the allowable limit!
This is specifiable and all manufactures should comply!
9. OA Does Not Control IAQ Alone!
Ventilation for VOC Control
20.0
VOC
Concentration (mg/cu.m)
15.0
Source:
10.0 National Institute of
Standards & Technology
5.0
0.0
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6
Ventilation Rate (AC/Hr)
12. July, 2010 Issue of
HVAC Insider Magazine
Article Author:
Bruce Longino, P.E., LEED AP
Topic: Reduction of Outside Air Using
ASHRAE 62 IAQ Procedure and
Needlepoint Bi-Polar Ionization
16. IAQ Procedure with Energy Recovery
Typical Classroom w/30 People
Wall Unit w/GPS
17. The Big Picture w/ OA Reduction
Smaller OA Unit Or Elimination of OA Unit
Downsize OA Duct
Downsize Electrical
Downsize Structural Steel
Pumps, Valves, Piping - All Reduced
Many Building Trades Affected!
18. The Big Picture w/ OA Reduction
Atlanta Area Schools (120,000 ft²)
Typical First Cost Savings = $300,000 to $400,000
or $2.50/ft²
Typical Annual Energy Savings = $48,000
or $0.40/ft²
GPS Adds VALUE Not Cost!
19. Plasma Breaks Down Gases To Less Objectionable Forms
H+
H
H N+
N
H
H+
Ammonia Molecule
H+
Plasma Field
20. The Objectionable Gases Regroup To Form Safe &
Desirable Gases Already Prevalent in Our Atmosphere!
O
O
O N
O
H
H O
N
H
N O N Nitrogen H
N
N O
O
O O
O
Oxygen O H
H O
Water Vapor
21. Chemical Compounds Plasma Can Easily Control
CHEMICAL FORMULA Electron Volt
Xylene C8H10 7.89
Styrene C 8H 8 8.46
Methyl Ethyl Ketone C 3H 8O 9.52
Ammonia NH3 10.07
Acetaldehyde CH3CHO 10.23
Ethyl Alcohol C2H5OH 10.48
Formaldehyde CH2O 10.88
Oxygen O2 12.07
Methane CH4 12.61
22. Ion Counts at Various Locations
1600
1400
Positive
1200
Negative
1000
Ions / cm3 800
600
400
200
0
Office Ventilated Cities Cities Rural Mountain GPS Space
Buildings Buildings (Large) (Small) Areas Air Design
23. Mold, Virus & Bacteria Control
The Positive and Negative Ions Attack DNA Cell Structure
& Removes Hydrogen
+ +
Plasma Contaminant
Source +
+ +
24. New Plasma TV Old Tube TV
New Plasma
Ion
Generators
Old Plasma Ion
Generators
25. GPS-IN
Nominal Capacity ≈ 1,200 CFM
Casing – ABS Plastic
Voltage – 12VDC Input
Indoor Mounted
Mount with Velcro or Metal Strap
26. GPS-RN
Nominal Capacity ≈ 2,400 CFM
Airflow
Direction
Casing – Stainless Steel
5.0”L x 3.8”W x 2.0”D
Voltage – 12VDC input
Indoor Mounted
Stainless Steel Needles
27. GPS Power & Mounting Options
24VAC (GPS-P2412) (comes with PC1)
Powers (3) GPS-RN or (20) GPS-IN
100VAC to 240VAC (GPS-UP12)
(Water Proof & comes with PC1)
Powers (3) GPS-RN or (20) GPS-IN
100VAC to 240VAC (GPS-UP13) (PC1)
Powers (2) GPS-RN or (15) GPS-IN
85VAC to 266VAC (GPS-UPW12)
Powers (2) GPS-RN or (15) GPS-IN
4X Enclosure (GPS-RN-4X) (Outdoor Duct)
115VAC Receptacle Inside 4X box w/GPS-RN (GPS-RN-4XR)
28. GPS-BP120 (includes j-box, rec & ps)
GPS-BPJB (includes j-box & cover – ps extra)
GPS-BP (no j-box or power supply)
32. Plasma Pole
PC2
Nominal Capacity ≈ No Limit
Casing – Stainless Steel
Voltage – 12VDC input
Indoor Mounted
Stainless Steel Needles
Contractor Provides Uni-strut or Angle Based on
the Application, i.e., RTU, AHU, etc.
33. Benefits of GPS’ Plasma
Lower First Cost
Increased Energy Savings
No Replacement Tubes Required
Improved IAQ
Mold, Bacteria & Virus Control
Static Electricity Control
Odor Control
Reduced Allergens
Compact and Fits Every Application
Essentially No Maintenance