Using dentrification bioreactors
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69th SWCS International Annual Conference “Making Waves in Conservation: Our Life on Land and Its Impact on Water” July 27-30, 2014 Lombard, IL
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3) Flow-proportional sampling strategies provided more accurate TRP load estimates than time-proportional strategies and were more cost-effective. Targeting high flow periods is important for reducing phosphorus loss.
August 31 - 0153 - San Simon
This document summarizes a study that evaluated a procedure for prioritizing maintenance of agricultural drainage ditches. The study measured the critical shear stress of soils using a cohesive strength meter to assess their susceptibility to erosion. Soils with higher root densities and those treated with mixed lime showed higher critical shear stresses, meaning they were less susceptible to erosion. Measurements of pressure on the soil surface during testing were mostly lower than estimates from other studies. The procedure effectively identified the relative erosion resistance of different soils, aiding prioritization of drainage ditch maintenance needs.
August 31 - 0130 - Chuck Brandel
ISG worked with Blue Earth County to digitize and modernize their drainage data. They georeferenced existing plans, digitized drainage features, attributed data to the digitized features, and created a geodatabase to house the updated drainage data. This project consolidated Blue Earth County's drainage records, improved data accuracy, and established a process for ISG and the County to regularly update the drainage data going forward. The updated digital records will benefit Blue Earth County, ISG, other engineering firms, and the public.
September 1 - 1139 - Ainis Lagzdins
This document summarizes the results of Latvia's long-term Agricultural Runoff Monitoring programme, which aims to document nutrient concentrations and losses at different spatial and temporal scales. The monitoring covers groundwater, experimental drainage plots, subsurface drainage fields, small catchments, and small/medium rivers at 23 sites. Results show discharge and nutrient concentration data varying by location, scale of monitoring, and between years with flooding or drought. Nutrient levels differed between the Berze and Mellupite monitoring sites and across groundwater, drainage plots, and catchment scales. The programme provides long-term data on agricultural nonpoint source pollution across Latvia.
September 1 - 1116 - David Whetter
This document summarizes an applied research and demonstration project evaluating soil and water management practices in undulating soils in southwestern Manitoba. The project aims to reduce nitrogen, phosphorus and salt export while improving drought resiliency. Preliminary results show tile drainage is lowering water tables most in lower landscape positions, with soil moisture responding rapidly in drained areas. Tile flow rates increase with decreasing elevation. Water quality measurements also show higher salt concentrations in lower positions. Next steps include water quality treatment analysis, long-term monitoring, modeling, knowledge transfer and reporting.
September 1 - 1053 - Matt Helmers
This document summarizes a coordinated research network studying the impacts of 4R nutrient stewardship practices on crop yields, soil health, and nutrient losses across sites in North America. The network included 8 research sites across 6 states/provinces from 2017-2020. Treatments included different fertilizer application timings, placements, sources, and rates. Standardized data collection allowed comparisons across sites. Preliminary findings showed 4R and advanced 4R practices improved nutrient use efficiency and reduced nitrogen losses while maintaining crop yields. Nitrous oxide emissions and nitrate leaching losses decreased under improved nutrient management, though impacts varied between sites and years. Ongoing research aims to further quantify environmental benefits and optimize fertilizer practices.
September 1 - 1030 - Chandra Madramootoo
The document summarizes research on managing drainage water in the Holland Marsh region of Ontario to improve water quality and agricultural productivity. Key points:
- The Holland Marsh is an important vegetable growing region on organic soils, but drainage into Lake Simcoe contributes excess nutrients.
- A study evaluated controlling water tables with controlled drainage to reduce pumping and nutrient loads in drainage water. Modeling and monitoring found it effective for water conservation but more limited for nutrient reductions.
- Soil phosphorus pools, particularly aluminum and iron-bound phosphorus, were found to influence phosphorus levels in drainage water more than drainage management alone. Fertilizer applications exceeded crop needs, accumulating legacy phosphorus in soils over time.
August 31 - 1139 - Mitchell Watkins
This document summarizes a study comparing the effects of conventional ditch drainage (FD) and shallow furrow drainage with tile (SD) on crop yields and water quality in eastern North Carolina. Preliminary results found that SD led to a 68% reduction in drainage volume, 80% less nitrate export, and higher average soybean (+9.1%) and corn (+3.7%) yields compared to FD. SD also requires less land area than FD, has lower maintenance needs, and shows potential to improve water quality and agricultural productivity with more efficient drainage management. The research aims to further quantify these impacts of SD drainage design.
August 31 - 1116 - Shiv Prasher
1) DRAINMOD simulations were conducted for a field in Harrow, Ontario with an asymmetrical drainage system to determine the best approach to simulate drain outflow. 2) Four approaches using different drain spacings were tested: 3.8m, 5.06m, 7.6m, and 15.2m. 3) The mean absolute error and root mean square error for each approach were acceptable, indicating drain spacing had little impact on outflow simulation, though it did impact soil moisture parameters.
August 31 - 1053 - Ehsan Ghane
This document discusses how the choice of pipe material influences drain spacing and system cost. It finds that pipe with more rows of perforations, such as an 8-row regular perforated pipe, has a higher effective radius than a 4-row pipe, allowing for wider drain spacing. Experiments show that a sock-wrapped pipe has the highest drain inflow of the pipes tested, both with and without drain sedimentation present. The key takeaways are that the number of perforation rows and slot length most impact effective radius and drain flow, and a sock-wrapped pipe performs best in terms of drain inflow and spacing.
August 31 - 1030 - Joseph A. Bubcanec
This document summarizes research conducted by the Plastics Pipe Institute (PPI) on the installation of corrugated high-density polyethylene (HDPE) and polypropylene (PP) agricultural drainage pipe. It describes field testing of 30-inch HDPE dual-wall pipe installed at a test site in Ohio, including instrumentation to monitor strain and deflection. Finite element modeling was also used to analyze trench configurations. The research aims to update industry guidance documents to optimize pipe installation practices and trench designs. PPI members also work to increase the use of recycled HDPE and PP materials in pipe production.
September 1 - 130 - McBride
The document discusses Ohio's H2Ohio water quality initiative and its funding of conservation practices including two-stage ditches. It launched in 2019 with $172 million to reduce phosphorus runoff from farms using best management practices like wetlands, buffers, and two-stage ditches. A $5 million grant program was announced to fund two-stage ditch projects based on design guidelines. The document provides details on the grant application process, design requirements using regional curves, and goals to fund 20 projects for 30 miles of ditches at $30 per foot on average.
September 1 - 0216 - Jessica D'Ambrosio
This document provides information on edge-of-field conservation practices and a panel discussion on drainage ditches. It summarizes various practices for nutrient, soil, and sediment removal including vegetated buffers, grassed waterways, prairie strips, wetlands, bioreactors, and controlled drainage. Cost effectiveness data is given for each. The key elements of an edge-of-field roadmap are outlined as building the economic case, increasing implementation capacity, and elevating a culture of conservation. A sample conservation planning scenario shows identified sites for practices treating over 9,000 acres of land. The document concludes with information on connecting with The Nature Conservancy's Ohio agriculture programs.
September 1 - 0153 - Mike Pniewski
This document discusses the implementation and maintenance of two-stage ditches. Two-stage ditches incorporate a floodplain area to increase flow capacity while slowing velocities. They allow for channel vegetation, improve sediment settling, and provide water quality benefits. Challenges include obtaining land access, communication with landowners, permitting, and planting/erosion control. Case studies of implemented two-stage ditch projects in Lucas County demonstrate post-construction conditions and results, including improved drainage and yields for agriculture.
September 1 - 0130 - Johnathan Witter
This document summarizes research on conservation channel design and sediment capture in two-stage ditches. It finds that self-forming channels accumulated more sediment, carbon, nitrogen, and phosphorus over time compared to traditional ditches. Sediment analysis showed higher nutrient levels than surrounding soils. A case study site captured over 500 kg of phosphorus over 9 years that could be harvested and reused as fertilizer, offsetting nutrient costs for farmers. The document concludes sediment trapping in two-stage ditches can improve water quality while providing a locally sourced, cost-effective fertilizer resource.
August 31 - 1139 - Melisa Luymes
Farmers, drainage contractors, researchers, and conservation authorities collaborated on a drainage innovation project at Huronview in Clinton, Ontario. They worked together on the design, installation, and monitoring of new drainage practices to improve water quality and sustainability while maintaining agricultural productivity. A demonstration day was held in June 2019 to share results with stakeholders. The project aimed to foster cooperation across sectors and balance priorities around drainage, research, environmental protection, and social acceptance.
August 31 - 1116 - Hassam Moursi
This document summarizes a study on the impact of drainage water recycling (DWR) on nutrient and sediment losses from agricultural fields in eastern North Carolina. The study found that storing drainage water in an on-farm reservoir for supplemental irrigation (DWR) significantly reduced nitrogen, phosphorus, and sediment concentrations and loads compared to a non-irrigated control field. Specifically, DWR reduced total nitrogen concentration by 40% and load by 47%. It also reduced total phosphorus concentration by 21% and load by 30%. Sediment concentration was reduced by 86% and load by 87%. The hydraulic retention time in the reservoir was found to be the major factor influencing nutrient and sediment removal efficiency.
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快速办理(Calabria毕业证书)卡拉布里亚大学毕业证在读证明一模一样
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原版制作(Newcastle毕业证书)纽卡斯尔大学毕业证在读证明一模一样
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本公司拥有海外各大学样板无数，能完美还原。
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◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
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2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
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Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
RoHS stands for Restriction of Hazardous Substances, which is also known as t...
RoHS stands for Restriction of Hazardous Substances, which is also known as the Directive 2002/95/EC. It includes the restrictions for the use of certain hazardous substances in electrical and electronic equipment. RoHS is a WEEE (Waste of Electrical and Electronic Equipment).
Improving the viability of probiotics by encapsulation methods for developmen...
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
原版制作(Manitoba毕业证书)曼尼托巴大学毕业证学位证一模一样
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本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Lessons from operationalizing integrated landscape approaches
Presented by James Reed at "9th Landscape Sustainability Science Forum" on 11 May 2024
Biomimicry in agriculture: Nature-Inspired Solutions for a Greener Future
Presentation made for the Webinar Series on Biomimicry for sustainability on 1st June 2024 organized by Green Building Council Sri Lanka
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
在线办理(lboro毕业证书)拉夫堡大学毕业证学历证书一模一样
学校原件一模一样【微信：741003700 】《(lboro毕业证书)拉夫堡大学毕业证学历证书》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
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Using dentrification bioreactors
- 1. Using Denitrifying Bioreactors to Treat Subsurface Drainage Discharges Larry Geohring, Will Pluer, Todd Walter Cornell University Biological & Environmental Engineering
- 2. Denitrifying Bioreactors • DNBRs treat excess nitrogen in field runoff • Designed to provide ideal conditions for denitrifiers – Anaerobic – Carbon source – Excess NO3 - INTRODUCTION
- 3. • 3 Farm Sites – Freeville Veggie – Vance Dairy – Burns Dairy • Susquehanna basin – Upstate NY • Tile drain systems • Woodchip/biochar fills • Sealed/open designs • Field/control inflow Field DBNRs INTRODUCTION
- 4. Lab DNBRs • 6 Lab reactors – 3 Woodchip – 3 Woodchip/biochar • Control variables: – Inflow NO3 - – pH – Residence time – Temperature – Microbial community INTRODUCTION
- 8. Field Runs: N2O FIELD RESULTS
- 9. Field Runs: CH4 FIELD RESULTS
- 10. Lab Runs: NOx LAB RESULTS
- 11. Lab Runs: N2O LAB RESULTS
- 12. Lab Runs: CH4 LAB RESULTS
- 13. General Efficacy CONCLUSIONS • Effectively remove NO3 - – 45-60% NOx-N reduction • Initial flush periods of P, DOC • No indication of P treatment – Other media may target PO4 3- better • Storm flows reduce treatment time – Missing highest loading period
- 14. Control Variables CONCLUSIONS • High variability among reactors • Low inflow NO3 - results in low reduction and high methane • High flow results in low reduction and high N2O • High pH sensitivity • Biochar shifting microbe community?
- 15. Gas Emissions CONCLUSIONS • Emissions of N2O and CH4 – N2O decrease with residence time • Total GHG footprint could be significant • No control discouraged N2O + CH4 – New designs or controls • Water quality probably outweighs trace gas emissions
- 16. Acknowledgements PIs: Dr. Todd Walter & Larry Geohring & Dr. Tammo Steenhuis Partner: Upper Susquehanna Coalition Help: Siobhan Powers, Shane DeGaetano, Sarah Levine, Anne Elise Creamer Funds: USDA NIFA, NRCS-CIG, NSF IGERT Any Questions?