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Showing 1 to 12 of 12 for “"Leaching Potential"”.
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Evaluation of struvite leaching potential relative to monoammonium phosphate through field and soil column trials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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From soil to groundwater: Assessing the leaching potential of cadmium across gradients of soil types and land-uses
… soils and different treatments may enhance metal leaching and transport. Through a statistical analysis of the data, this study aimed to test the hypotheses that the leaching potential of metals and nutrients in soils varies depending on the type of soil and farm management strategies. Research …
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Evaluating Leachability of Residual Solids from Hydraulic Fracturing in the Marcellus Shale
… operations in the Marcellus Shale to predict the leaching behavior of select elements in disposal environments. Samples collected for this research were: (1) drilling mud, (2) treated sludge from the chemical treatment of process waters, (3) solids from the gravity settling of produced water, and …
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A study of leaching tests for cement stabilised waste
… was subjected to batch, column, and dynamic leaching tests, and the leaching behaviour of arsenic, copper, lead, selenium, and zinc was investigated. Batch tests included the Australian Bottle Leaching Procedure (ABLP, AS 4493.3-1997), Toxicity Characteristic Leaching Procedure (TCLP, USEPA …
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Enhancing hydraulic performance of a multi-stage anaerobic digester for high solids cattle manure
… column scale to evaluate the impact on organic leaching potential of varying hydraulic loading rate (HLR) through the USSHR using HLRs of 20, 41, and 75 cm/day for 16-day cycles. This experiment was the first successful demonstration of a fully linked MSAD system using cattle manure as …
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Agronomic and Nitrate Leaching Impacts of Pelletized versus Granular Urea
… nitrogen (N) removal, and nitrate-N (NO₃⁻-N) leaching from urea pellets (1.5 g each) and granules (0.01-0.02 g each) applied at 184 kg-N/ha were compared. A control treatment (no N) and two other N application rates (110 and 258 kg-N/ha) were also included. Urea particle size impact on …
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Evaluating Leachability of Residual Solids Generated from Unconventional Shale Gas Production Operations in Marcellus Shale
… environments. For this purpose, laboratory leaching experiments were employed wherein representative samples were brought into contact with a liquid to determine the constituents that would be leached by the liquid and potentially released into the environment. The samples used included …
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Biogeochemical Transformations of Trace Element Pollutants During Coal Combustion Product Disposal
… degradation, which includes: contaminant leaching into groundwater, the discharge of contaminant-laden effluent into surface waters, and catastrophic impoundment failures and ash spills. Despite these known problems, coal ash is not considered a hazardous waste, and thus is not subject to …
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Assessing natural and management-induced patterns of herbicide sorption and risks in catchments: a soil landscape modeling approach.
… patterns of herbicide sorption and risks of leaching and off-site transport of herbicides in an intensively managed orchard system. The questions for this thesis were: a) How can contour-derived digital elevation models be enhanced? b) To what extent do topographic and management factors …
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Assessment of groundwater vulnerability to pesticide contamination in Albemarle and Louisa counties, Virginia
Groundwater contamination potential by pesticide was evaluated in Albemarle and Louisa counties of the Thomas Jefferson Planning District in Virginia. A qualitative method was developed to perform an assessment of pesticide contamination potential, using an existing pesticide screening model. The …
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Evaluating the Leachability of Elements from Residuals Generated by Hydraulic Fracturing in Marcellus Shale
… to determine their elemental composition and the potential for the elements to leach from the landfill. Strong acid digestion using a 3:1 combination of nitric acid to hydrochloric acid in a microwave with closed vessels was used to determine overall elemental composition. Leaching experiments …
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A multifarious comparative ecotoxicological approach on a catchment scale from three mine wastelands for improved environmental management and risk assessment: integrating abiotic, biotic and agroecosystem approaches
… the waste, including those resulting from the potential for ARD generation from the mine waste (tailings) following the recovery of copper from sulphidic ores, the impacts on the aquatic ecosystem, the agro-ecosystem and potential ecological restoration using phytomining technologies. The study …