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tools and data developed specifically for addressing groundwater issues unique to power plant facilities, risk assessment methodologies to facilitate assessment of potential liabilities and selection of cost- effective management strategies, cost savings realized with expedited groundwater investigations, and wide-ranging information...
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The addition of flue-gas desulfurization (FGD) systems, selective catalytic reduction, and activated carbon injection to capture mercury and other pollutants will shift mercury and other pollutants from the stack gas to fly ash, FGD gypsum, and other air pollution control residues.
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Over 57.4% of FGD gypsum is used, which is quite a large percentage; however, of this amount, approximately 4.2% only is used in agriculture in the USA ACAA (American Coal Ash Association), 2017,...
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IX. What new information and potential modeling analyses to update and enhance the risk assessment are being noticed? EPA is considering updating its risk assessment prepared in support of the 2010 proposed rule based upon public comments and additional information made available since the publication of the proposed rule.
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Other areas that received significant comment included beneficial use and the risk assessment. ... and leaching test results for various types of CCR, i.e., bottom ash, FGD gypsum, FGD sludge, fly ash cenospheres, boiler slag, and combined waste streams. This included data from several EPRI reports, which provided field leachate results for ...
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Ag Lime at $30 / ton, net savings are $120,000 in lime and $216,000 in landfill costs 10 Dr. Rufus Chaney USDA-ARS Laboratory Beltsville, Maryland Risk assessment of FGD Gypsum use in agriculture Partnership with EPA and USDA Included review of prior field research of FGD gypsum use in agriculture and test plot work
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Ecological Risk Assessment and Influencing Factors of Heavy-Metal Leaching From Coal-Based Solid Waste Fly Ash ... the leached amounts (oscillation leaching) were below the soil risk screening values for agricultural land in China. An RAC-Cd value of >50% indicates a high ecological risk, while the RAC values of Co and Ni were between 10 and 30 ...
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Changes in emissions control at U.S. coal-fired power plants will shift metals content from the flue gas to the air pollution control () residues. To determine the potential fate of metals that are captured through use of enhanced practices, the leaching behavior of 73 residues was characterized following the approach of the Leaching Environmental Assessment Framework. Materials ...
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Phase 1 was the creation of a field-level risk assessment tool that identified protection areas and gave individual risk ratings for runoff and leaching potential based on 15 aspects of soil properties and field characteristics. ... This workshop is beneficial to K-12 teachers, university extension and teaching faculty, public relations ...
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Appropriately increasing the amount of FGDG can achieve a better soil improvement effect, but an excessive amount may cause heavy metals to accumulate in the soil, resulting in potential risks...
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Trace element toxicity: One of the major concerns for FGD use on agricultural land has been potential hazard of trace element (i.e. Ag, As, B, Cd, Cr, Cu, Hg, Mo, Ni, Pb, Se, and Zn) contamination in water and plants. Of particular concern is when toxic concentrations of these elements enter the food/feed chain.
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Sludge - recycling for agricultural use. Full Record; Other Related Research; Abstract. This report provides an insight into how several communities have successfully developed sludge management programs that involve the recycling of municipal sludge for agricultural use.
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Division of Beneficial Reuse Management is the market leader in promoting and expanding this use. We understand grower decision-making, agronomy and soil science,the agricultural distribution system and the regulatory environment. Partner with GYPSOIL/Beneficial Reuse Management to put your byproduct gypsum to productive reuse in agriculture
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The final rule provides a definition of beneficial use to distinguish between beneficial use and disposal. This rule does not affect beneficial use applications completed before the effective date of the rule; only applications to be started after the effective date of the rule need to determine if they comply with the criteria contained in the final rule distinguishing between beneficial use ...
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Jun 13, 2022Ecological Effects Test Guidelines OCSPP 850.3040: Field Testing for Pollinators - This guide is intended for use in developing data on hazards to bees, under actual field conditions, of chemical substances and mixtures. Pesticides Pesticides are widely used in the agriculture field to protect crops from pests.
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Risk Assessment for Byproduct Use: Cooperation with U.S. Environmental Protection Agency and ARS scientists made important progress. In the work with ARS, the potential for FGD-Gypsum to adhere to leaves of forages and comprise risk to grazing livestock was tested in the field.
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As regulators and electric utilities increasingly consider viability and economics of the use of CCPs in various applications, this study provides a first-basis study of selected beneficial use alternatives. With these initial results, future studies should be directed towards beneficial uses that promise significant economic and environmental savings, such as use of fly ash in concrete, to ...
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The Wisconsin Agribusiness Classic -"the Classic" (formerly the Wisconsin Crop Management Conference) is the Midwest's premier agronomic inputs industry event. This conference encompasses three days of educational sessions and two days of agriculture industry trade show exhibits. The 2021 event is set for January 12-14.
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The Centre for Territory, Environment and Construction (CTAC) is a R&D unit of the School of Engineering of University of Minho, recognised by the "FCT - Fundação para a Ciência e Tecnologia" (Foundation for Science and Technology), dedicated to research in the field of civil engineering
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Reclaiming and Recycling Coal Fly Ash for Beneficial Use John M. Castleman III, PE, SEFA; Data-Mining the Rare-Earth-Element Potential of Old Mine-Mouth Power Plants' CCR Robert G. Kennedy III, PE, Tetra Tech Richard W. Arnseth, Tetra Tech, Inc. Farley Wood, Tetra Tech, Inc. FGD Gypsum in Agriculture Nancy Pals, Boral Resources
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Zhao, L. Y. 2005. "Development of a prototype wet scrubber for reduction of dust and ammonia emissions from poultry buildings". Ohio Agricultural Research and Development Center. Zhao, L. Y. 2004. "Preliminary assessment of air quality in Ohio farms and health risk to farmers and their neighbors". The Ohio Agricultural Research and Development ...
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The U.S. Department of Energy's Office of Scientific and Technical Information
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Read "10.1016/j.jenvman.2013.11.053" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
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EPA concludes that soil may not exceed 0.43 mg As/kg without risk thru soil/dust ingestion by children. This concentration is below As in normal US soils. 5 to 95 %ile range for As in US soils is 2-12 mg/kg. Many question the validity of the 0.43 mg kg-1limit for soil As (10-6lifetime cancer risk).
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This paper summarizes application of the leaching assessment framework for evaluating beneficial use scenarios and provides examples concerning the impacts of facility configuration and coal type on CCR leaching. fINTRODUCTION More wide-spread implementation of multi-pollutant controls is occurring at U.S. coal-fired power plants.
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The aim of this study was thus to assess the usefulness of using a combination of FGD gypsum and fluidized bed combustion ashes (combustion by-products at power plants and coal combined heat and power plants) for fertilization purposes. 2 Materials and Methods
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The basic properties and the current beneficial applications of FGD gypsum are summarized here. The practical application of FGD gypsum in four fields—building materials, agriculture, material synthesis, and soil—and its impact on the environment, are analyzed. Finally, a new direction is proposed for the future utilization of FGD gypsum.
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Figure 1 presents a summary of the primary uses by CCR type (e.g., fly ash, FGD gypsum, bottom ash). Of the 72 millions tons of fly ash produced in 2006, 44% (or 32 million tons) was used in commercial applications including the production of cement-related products, structural fill, and
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Dec 6, 20212. What is beneficial use? Beneficial use (BU) involves the substitution of an industrial non-hazardous secondary material, either as is or following additional processing, for some or all of the materials in a natural or commercial product in a way that: provides a functional benefit, meets product specifications, and does not pose concerns to human health or the environment.
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Dec 14, 2020according to lynas [ 7 ], neutralization underflow residue, known as magnesium-rich synthetic gypsum (mrsg) has high ph and contains gypsum and other nutrients needed by plants such as mg and s. due to these properties, the mrsg has potential to be used as an alternative to the conventional fertilizers to supply ca, mg and/or s, soil conditioner .
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Most of the FGD gypsum needs to be used or treated to avoid massive disposal needs and potentially secondary pollution. Therefore, using FGD gypsum produced by the power industry in the agricultural sector to reclaim sodic soils could be one of the best solutions of this FGD by-product (Xu et al., 2005).
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Pesticides were found in all samples from major rivers with mixed agricultural and urban land use influences and 99 percent of ... Once there, they can harm plants and animals ranging from beneficial soil microorganisms and insects, non-target plants, fish, birds, and other wildlife. ... The data on environmental-cum-health risk assessment ...
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Further, FGD gypsum now used as feedstock in the manufacturing of drywall for installation in residential and commercial structures will be viewed by consumers as a product containing a hazardous waste (the same view would likely apply to virtually all end-use products containing CCBs used in commercial and/or residential settings).
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Cooperated with US-EPA and other ARS scientists, Ohio State University and the Electric Power Research Institute in conducting a risk evaluation for beneficial use of fluidized gas desulfurizationm (FGD) gypsum produced after removal of fly ash from the exhaust of coal-fired power plants.
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4.2.5 Flue gas desulfurization (FGD) gypsum, in its majority, is typically beneficially used in gypsum panel products. Other uses include in agricultural applications to improve soil, as a component in structural fills, and as an important component in the production of cement (6, 7, 9).
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FBC ash decreased both bioavailable levels of FGD gypsum is attributed to P as measured by Olsen P and leaching the decrease in soil pH. Bolan et al. of P. Figure 2. The relationship between soil pH and increase in phosphate sorption (as measured by distribution coefficient - Kf) as affected by various Ca containing soil amendments. Table 6.
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Agricultural soil amendment: FGD gypsum can be used to replace agents as an agricultural soil amendment for specific soil and crop types. ... A more detailed discussion of the role of LCA in economic benefits assessment is provided in Appendix B. ASSESSMENT OF BENEFICIAL IMPACTS OF CCP USE To fully capture the beneficial impacts of C2P2 ...
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141 - Using Risk Assessment in the Remedy Selection Phase of the CCR Rule; Bradley 160 - Micron 3 - Production and Utilization of Ultrafine Fly Ash; Spencer, Loya, Minkara 98 - Fly Ash Adsorption Capacity as Measured by Spectroscopy Techniques; Ardani 50 - CCP Beneficial Use Risk Assessment: Case Studies for Three Different Applications ...
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Flue gas desulfurization (FGD) gypsum has been used as an amendment to reduce soil salinization and alkalinization worldwide. However, the effective and safe use of FGD gypsum in agricultural land is still debatable in some countries, although many studies have reported its beneficial effects on soil management.
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In addition to conducting assessments to evaluate and address potential structural integrity issues of Coal Waste impoundments, EPA is also in the process of developing the first national rules to ensure the long-term safe disposal and management of coal ash from coal-fired power plants. ... "The EPA supports the beneficial use of coal ash ...
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