Power and Dipple MgO carbon sequestration
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This study assessed the carbon sequestration potential of magnesium oxychloride cement boards by 1) documenting the fate of fixed CO2 within the boards, 2) fingerprinting the source of CO2 to confirm its value as a greenhouse gas offset, 3) determining the passive rate of CO2 sequestration under ambient factory conditions, and 4) determining the potential to accelerate sequestration using elevated CO2 concentrations. The results showed plates of magnesium carbonate forming within the boards, stable carbon and oxygen isotope analysis confirming atmospheric CO2 sequestration, an estimated passive sequestration rate of 1 kg CO2/m2 over 15 years, and storage under 100% CO2 accelerating the rate by
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This document summarizes a presentation on modeling the weathering of olivine rock to sequester carbon dioxide from the atmosphere. The presentation models how olivine weathers over time, calculating the rate of CO2 sequestration and release of nickel into the environment. The model shows that for agricultural applications, only very fine olivine exceeds nickel regulations in the first month, but olivine can be used for both civil and agricultural uses overall. The document includes figures showing model inputs, outputs for CO2 sequestered, magnesium and nickel released over time, and nickel concentrations in plants and soils.
Nitrogen process 12
The document discusses using membrane technology for nitrogen production and separation from air. There are three main types of membranes that can be used: organic polymer, mixed matrix, and inorganic molecular sieve. The polymer membrane can be used in single or multistage processes to separate nitrogen from natural gas streams with concentrations below 12%, recovering up to 93% of the methane. Higher nitrogen concentrations make the membrane process uneconomical due to increased energy requirements. The membrane acts as a selective barrier, separating gases like nitrogen, oxygen, and water based on differences in partial pressure. Overall, membrane technology provides a scalable and energy efficient alternative to other nitrogen separation methods like cryogenic distillation.
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KHANNA & ASSOCIATES is a 70 year old taxation lawyer and chartered accountant firm .It includes Company Secretary , MBA s, Taxation Lawyers and Chartered Accountant. We are an international law firm . We provide various services legal to finance.
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The document is a disclaimer and presentation from Orbis Gold Limited given at the Mines and Money Conference in London on December 2, 2014. It discusses Orbis Gold's Natougou gold project in Burkina Faso, which contains an estimated 2 million ounces of gold in its mineral resource. The presentation highlights that the definitive feasibility study for Natougou is over 50% complete and aims for production to begin in late 2016. It also notes that Natougou has the potential for resource expansion through step-out drilling at depth and along strike from the deposit.
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1) The document summarizes research on adsorption of gases like CO2, N2, CH4 in the metal-organic framework (MOF) Cu-BTC.
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Production of Renewable Fuels by the Photocatalytic Reduction of CO2 using Ma...
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Carbonate removal by acid fumigation for measuring 13 c
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Using Carbon Isotopes to Monitor CO2 at the CONSOL Energy Inc. Coal Sequestr...
The use of carbon isotopes is one of the most effective ways of monitoring, verifying and accounting (MVA) for injected CO2 as carbon forms part of the CO2 molecule itself. This study focuses on using carbon isotopes to understand CO2 dissolution, monitor CO2 plume migration, and identify the presence/absence of CO2 leakage into overlying formations and shallow subsurface at the CONSOL Energy Inc. sequestration test site located in Marshall County, West Virginia along the Pennsylvania Fork of Fish Creek. The CO2 gas is being injected, for testing both coal bed methane recovery and carbon sequestration, into the Upper Freeport coal bed at ~1200 feet depth. Ongoing CO2 injection began in 2009, and continuous geochemical environmental monitoring of shallow ground water, Fish Creek, and vadose zone gas began in 2008. In summer 2012 water and gas sampling began for carbon isotopic analysis at or near the test site; water is being sampled and tested from three groundwater monitoring wells, a few domestic groundwater supplies, and Fish Creek. Gas is being sampled and tested from the CO2 injection source gas tank, two deep coal bed methane producing wells, one deep monitoring well, and eight shallow vadose zone monitoring wells. The preliminary data indicate that the CO2 gas used in this sequestration operation has a different isotopic value compared to naturally occurring CO2 in the geologic formations. Initial data indicate that carbon isotopes can be used as an effective “natural built-in tracer” for monitoring the CO2 plume and/or its leakage into overlying shallow aquifers and subsurface.
FuriPoster.NancyFujikado
This document summarizes a study on using mechanically-activated wollastonite to sequester CO2 through mineral carbonation as a replacement for Portland cement. The process involves:
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3) Analyzing the products using XRD and SEM to determine if carbonation occurred and which samples could potentially substitute for cement. Further mechanical testing is needed to verify substitutability. The goal is to decrease CO2 emissions from cement production while creating a more sustainable cement alternative.
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This document summarizes a study on the strength, economic, and sustainability characteristics of geopolymer concrete made with coal ash and ground granulated blast furnace slag (GGBS). The study found that:
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REVIEW_ON_CONVERSION_OF_CO2_INTO_NEW_VALUABLE_FORM_ijariie2016
1) The document discusses various methods for converting carbon dioxide (CO2) into valuable products and fuels to reduce CO2 emissions, including chemical looping combustion, CO2 conversion to fuels using chromium supports, burning magnesium metal in dry ice to produce graphene, electrochemical conversion to methanol and ethanol, and conversion using solar energy.
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1) The document discusses methods for determining soil calcium carbonate equivalent (CCE), including volumetric calcimetry and titrimetry.
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International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Cu33582587
This document examines the reactivity of cement combinations containing Portland cement, fly ash, silica fume, and metakaolin by investigating their calcium hydroxide (Ca(OH)2) consumption. Various binary and ternary cement pastes were tested at ages of 28, 90, and 180 days. The results show that silica fume consumed the most Ca(OH)2, followed by metakaolin, then fly ash. Ca(OH)2 consumption increased with age and addition content up to certain limits. Combinations with finer pozzolans like silica fume and metakaolin showed higher reactivity, especially at early ages.
Atlantic Meridional Overturning Circulation Effects on the Carbon Cycle and A...
1) Ice core data suggests that reductions in the Atlantic Meridional Overturning Circulation (AMOC) are associated with increases in atmospheric CO2, as a weaker AMOC reduces the biological pump's ability to sequester carbon in the deep ocean.
2) Early modeling studies showed reductions in the AMOC decrease ocean and land carbon storage, leading to higher atmospheric CO2 levels.
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UWUSCT100014
This document describes research on producing multilayer graphene oxide membranes using different oxidation methods of vein graphite. The objectives were to compare the sp2/sp3 carbon ratios in the resulting graphite oxides. Two methods were used: Hummers' method and an improved Hummers' method. Analysis using SEM, XPS, and carbon/oxygen ratios showed the improved method produced a higher fraction of oxidized carbon with a sp3/sp2 ratio of 3.62:1, compared to 1.04:1 for the standard Hummers' method. This indicates the improved method yields better oxidation of the graphite starting material.
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- The document summarizes a seminar presentation on carbon quantum dots (CDs), which are nanoscale carbon materials less than 10 nm in size that exhibit fluorescence.
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- CDs have potential applications in chemical sensing, bioimaging, optoelectronics and more due to their tunable fluorescence, biocompatibility and photostability. Their synthesis, properties, characterization and applications were discussed in detail in the presentation.
8 leaching of trace elements in enugu coal effect of acid concentration
The effect of acid concentration on the trace elements composition of Enugu sub-bituminous coal from Onyeama Mine was investigated by leaching the coal using nitric acid (HNO3) of 0.5M, 1.0M, 1.5M and 2.0M concentrations. The amount of trace elements (in ppm) present in the filtrate from the leaching process were determined using Varian AA240 Atomic Absorption Spectrophotometer with cathode lamps of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), and lead (Pb). Optimum leaching condition of the trace metals were obtained using 2.0M HNO3 solution for 1 hour and 75µm particle size which resulted in the detection of As(1.363ppm), Cu (1.413ppm), Cr (0.764ppm), Cd (0.146), and Pb (1.942ppm). 2.0M concentration of nitric acid has proven to be very effective in the leaching of trace metals in Enugu coal. Result of the SEM analysis shows that the porosity of the coal residue was increased and this provides strong evidence that significant amounts of inorganic elements were removed. Onyeama coal, therefore, contains large proportions of silica, calcium carbonate, and dolomite, as well as some elements such as aluminum, iron, and potassium, and other trace metals such as lead, chromium, cadmium, arsenic, mercury, copper.
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Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
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8.Isolation of pure cultures and preservation of cultures.pdf
8.Isolation of pure cultures and preservation of cultures.pdf
aziz sancar nobel prize winner: from mardin to nobel
aziz sancar nobel prize winner: from mardin to nobel
3D Hybrid PIC simulation of the plasma expansion (ISSS-14)
3D Hybrid PIC simulation of the plasma expansion (ISSS-14)
Compexometric titration/Chelatorphy titration/chelating titration
Compexometric titration/Chelatorphy titration/chelating titration
Deep Software Variability and Frictionless Reproducibility
Deep Software Variability and Frictionless Reproducibility
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
Immersive Learning That Works: Research Grounding and Paths Forward
Immersive Learning That Works: Research Grounding and Paths Forward
Power and Dipple MgO carbon sequestration
- 1. Ian Power* and Greg Dipple Department of Earth, Ocean and Atmospheric Sciences The University of British Columbia, *ipower@eos.ubc.ca Assessing the carbon sequestration potential of magnesium oxychloride cement boards This study 1) documented the fate of fixed CO2 within magnesium oxychloride (MOC) boards, 2) fingerprinted the source of CO2 to confirm its value as a greenhouse gas offset, 3) determined the passive rate of CO2 sequestration within boards under ambient factory conditions, and 4) determined the potential for accelerating carbonation of MOC board using elevated concentrations of CO2.
- 2. 2Th Degrees 75706560555045403530252015105 Counts 15,000 10,000 5,000 0 Quantifying carbon sequestration Mineral abundance data and carbon analyses of MgO powders and magnesium oxychloride boards were used to quantify the amount of sequestered carbon dioxide X-ray diffraction pattern of MOC board with quantitative analysis
- 3. Plates of magnesium carbonate (CO2 sink) associated with needles of magnesium oxychloride phase 5 Changes in microstructure 2 µm
- 4. Fingerprinting carbon sources Stable carbon and oxygen isotopic data were used to confirm the sequestration of atmospheric CO2 within magnesium oxychloride boards 0 5 10 15 20 -15 -10 -5 0 5 δ18O(permil) δ13C (per mil) Boards MgO Atmospheric CO2 Bedrock CO2
- 5. Rate of carbon sequestration 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 5 10 15 SecondaryCO2mass/boardarea(kg/m2) Age (years) An estimated rate of carbon sequestration within magnesium oxychloride board is 1 kg CO2/m2 of board over 15 years
- 6. Carbonation experiment 300 µm 100% CO2 Storage of boards under 100% relative humidity and 100% CO2 accelerated rates of carbon sequestration by nearly 1000x