leachate Articles

  • Contaminants in waste foundry sand and its leachate

    The environmental characteristics of Waste Foundry Sands (WFS), including chemicals in WFS and its leachate, are essential in understanding the environmental impact, rational disposal and potential development of beneficial applications of this solid industrial waste. This paper presents an assessment of broad-spectrum chemicals (metallic, non-metallic and organic chemicals) in aspects of their ...


    By Inderscience Publishers

  • Solving Toxicity Issue with Leachate - Case Study

    Toxicity of lanfills leachate is a big environmental concern and issue in Canada. The city of Riviere-du-Loup Has taken steps toward solving this environmental issue. Probiosphere is actually dealing with the issues and the results, so far are on target. We have clearly made the choice of selecting natural biodegradable ingredients to conduct this experiment. The use of natural product that allow ...


    By Probiosphere Inc.

  • Modeling Leachate Contamination and Remediation of Groundwater at a Landfill Site

    Leachate contamination of an aquifer from a landfill sitewas simulated using the groundwater flow and transport model SUTRA developed by the U.S. Geological Survey. The model calibration was performed by spatially adjusting the hydraulic conductivity in order to capture the measured hydraulic head spatial variation and then by adjusting the dispersivity and porosity match the measured chloride ...


    By Springer

  • Field Pilot Study of a Chemical Oxidation Process for Treatment of Industrial Waste Leachate

    Remediation efforts are ongoing at the Avtex Fibers Superfund Site in Front Royal, Virginia. As part of the future remediation of several surface impoundments used for viscose waste disposal during plant operation, it may be necessary to extract contaminated leachate and groundwater for ex-situ treatment and discharge to the Shenandoah River. This waste stream contains varying concentrations of ...

  • Effect of straw leachates from Cry1Ca‐expressing transgenic rice on the growth of Chlorella pyrenoidosa

    Because of the prevalence of algae in rice paddy fields, they will be exposed to Bacillus thurigiensis (Bt) proteins released from Bt protein‐expressing genetically engineered rice. To assess the effects of leachates extracted from Cry1Ca‐expressing transgenic rice (T1C‐19) straw on the microalga Chlorella pyrenoidosa, we added purified Cry1Ca (10, 100, 1000 µg/L) and five concentrations of ...


    By John Wiley & Sons, Ltd.

  • Leach Tests on Lime-Treated Clays

    This paper describes the design, use, and results of a multiple leach-cell operation to test the changes in permeability and calcium removal of a lime-treated expansive clay under continuous water leaching. Seventy laboratory-prepared lime-treated clay specimens were subjected to continuous accelerated leaching for periods of 45 and 90 days with varying lime contents and compactive moisture ...


    By ASTM International

  • Techniques for Estimating the Longevity of Lime-Treated Expansive Clays

    Two techniques are presented that investigate the possibility of estimating the longevity of lime-treated expansive clays subjected to leaching. The techniques are based on analyzing calcium concentrations and pH changes within accelerated leached laboratory specimens and their leachates during the leaching process. The accelerated leach times required to produce specific calcium concentrations ...


    By ASTM International

  • Geo-Environmental Assessment of a Micaceous Soil for Its Potential Use as an Engineered Clay Barrier

    The ability of the fine fraction of a natural micaceous soil in the Stanleyville area near Perth, Ontario, to retard an acidic waste leachate is examined. Batch and leaching column tests were used to investigate the retention capcity of the natural soil. To investigate the effect of ion competition on adsorption/desorption capacity of the soil, single and multi-components of Pb2+ and Zn2+ were ...


    By ASTM International

  • Nitrogen source and rate influence on tall fescue quality and nitrate leaching in a southern California lawn

    In California, residential lawn area is second in planted acreage to production agriculture. Due to the demand for visually attractive lawns, relatively large amounts of N are often applied. The objective of this research was to investigate the effect of N source and application rate on tall fescue [Schedonorus phoenix (Scop.) Holub] visual quality and color, clipping yield, N uptake, and nitrate ...

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