epa tclp Articles

  • Screening method for 2,4-d and silvex in tclp leachate

    MATRIX: Leachate of solid or liquid waste as described in Toxicity Characteristic Leaching Procedure ANALYTE: 2,4-D and Silvex (2,4,5-TP) RANGE OF DETECTION: 1 to 50 ppm 2,4-D, 0.2 to 10 ppm Silvex MATERIALS: 2,4-D RaPID AssayÒ kit and 2,4-D Sample Diluent (available from SDI). Silvex RaPID AssayÒ kit ...


  • Determination of the Environmental TCLP Metals in Waste-Waters, Solid Wastes, and Soils by Flame Atomic Absorption Spectrophotometry

    Hazardous wastes can originate from many sources – industrial processes, product formulations, synthetic operations, virtually any manufacturing business. The nature and composition of the “wastes” can vary so much that one industry’s discharge can serve as another’s raw materials. It is the tremendous transfer of these materials – their storage, transportation, spillage and leakage into the ...


    By Buck Scientific Inc

  • Evaluation of Priority Pollutant VOCs in Waste-Water and Solid Waste by EPA Method-624 Gas Chromatography

    Processing waste discharges, manufacturing effluents and sewage would not normally have been a problem 50 years ago, but the advent of almost unchecked industrial growth the latter half of the last century has created the POTENTIAL for a wide variety of characterized pollutants to enter the environment of any municipality. The toxic METALS are tested by approved State & Federal methods defined in ...


    By Buck Scientific Inc

  • Minimizing Arsenic Leaching from Water Treatment Process Residuals

    Ferric chloride addition was investigated for treatment of As-laden spent regeneration brine from ion exchange processes. Furthermore, varying conditions and calcium addition were investigated for the stabilization of the resulting As-laden solids. Arsenic, sulfate, bicarbonate, and chloride concentrations in the spent brine (300 mg/L, 605 mg/L, 305 mg/L, and 24 g/L, respectively) were orders of ...

  • Hazardous waste characterisation of high-density discharge lamps

    This study was conducted to assess the relative hazards of used high intensity discharge lamps, based on metal analysis. The paper indicates the inherent difficulties associated with the samples and describes how this particular type of waste might be analysed. The lamps were analysed for total and soluble metals, including mercury, in order to determine inorganic persistent and bio-accumulative ...


    By Inderscience Publishers

  • Floccin for Metals Removal Beats Hydroxide Precipitation Hands Down

    The traditional approach for metals removal is Hydroxide Precipitation where the solubility for the metals changes to insoluble (precipitation) in the form of a metal Hydroxide as the pH increases. The common pH range for this is between 10-11 pH depending on the metal. Lime (calcium hydroxide or CAOH2), caustic (sodium hydroxide or NAOH) or magnesium hydroxide (MgOH2) are generally the chemicals ...


    By Integrated Engineers Inc.

  • Deadly Hexavalent Chromium in Soil

    Merging technologies will change over Hexavalent Chromium in soil to Trivalent Chromium, effectively stopping Hexavalent Chromium from becoming dangerously airborne or becoming even more deadly by migrating into the water table. There are three valences of Chromium: 1) Chromium—safe to humans, 2) Trivalent Chromium—safe and an essential element in humans and 3) Hexavalent ...


    By ABCOV Companies

  • Performance-Based Measurement Systems

    Many of the Environmental Protection Agency's (EPA's) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not ...


    By WSP | Parsons Brinckerhoff

  • Environmental protection

    An analysis of the lighting industry shows a significant shift from the use of incandescent bulbs to fluorescent bulbs. Incandescent bulbs use more fossil fuel energy, cost more and are less effective than fluorescent bulbs, which produce more lumens. Usage of fluorescent bulbs, however, is not entirely without risk because they contain mercury, a chemical compound that can have debilitating ...


  • Simple Separation: Diverting Wood And Cardboard at Construction Sites

    Diverting Wood And Cardboard At Construction Sites Residential home construction in Wisconsin generates 128,000 tons of residuals annually, according to a 1998 study by Camp, Dresser & McKee. Ten builders are participating in a project to demonstrate how easily major components of this waste stream can be recycled. The Metropolitan Builders Association (MBA) of Greater Milwaukee, the ...


    By BioCycle Magazine

  • Educate, Educate, Educate : Why Colorado Farmers Want New York City Biosolids

     Diverting Wood And Cardboard At Construction Sites Residential home construction in Wisconsin generates 128,000 tons of residuals annually, according to a 1998 study by Camp, Dresser & McKee. Ten builders are participating in a project to demonstrate how easily major components of this waste stream can be recycled. The Metropolitan Builders Association (MBA) of Greater Milwaukee, the ...


    By BioCycle Magazine

  • Comparing Field Portable X-Ray Fluorescence (XRF) To Laboratory Analysis Of Heavy Metals In Soil

    ABSTRACT Field portable x-ray fluorescence (XRF) continues to gain acceptance as a complement to traditional laboratory testing of metal contaminated soil. The quality of data produced by field XRF varies with site conditions, soil composition, and sample preparation. Quality assurance protocols for the field method usually require that a number of field samples be split and sent to a ...

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