toxicity characteristic leaching procedures Articles

  • Assessment of toxicity of solid waste in landfill dumpsite by the toxicity characteristic leaching procedure

    The concentrations of Pb, Cd, Cr, Sb, Fe, Zn, Ca, Cu, Ag, Ba and Hg, present in solid wastes of Pallavaram municipality landfill dumpsite located in Chennai were determined and their toxicity was assessed using the toxicity characteristic leaching procedure (TCLP) developed by the US Environmental Protection Agency (USEPA). The TCLP method is a currently recognised international method for ...


    By Inderscience Publishers

  • Desorption kinetics and leaching study of arsenic from arsenite/arsenate-loaded Natural Laterite

    Desorption kinetics of arsenite- and arsenate-loaded Natural Laterite (NL) is performed under varying NaOH concentration (0.05-0.3 mol/L) and pH (4.0-11.0) of the desorption medium. The kinetic desorption data are well fitted to pseudo-second order kinetic model. The leaching of NL under aqueous medium is performed in the pH range of 2-12. Separately arsenite- and arsenate-loaded NL is leached ...


    By Inderscience Publishers

  • Adsorption characteristic of As(III) on goethite waste generated from hydrometallurgy of zinc

    In this paper, goethite waste from hydrometallurgy of zinc was used as a raw material for arsenic adsorbent preparation. The goethite waste adsorbent (GWA) was characterized with scanning electron microscope (SEM), X-ray powder diffraction (XRD), and particle size distribution analysis. The adsorption of As(III) on GWA was studied as a function of contact time, pH, and coexisting anions. The ...


    By IWA Publishing

  • Chemical, Physical, Mineralogical, Morphology Characteristics of a Thermal Power Plant Washing Waste

    Most of electricity is generated by thermal power plants in Iran. Shahid Rajaee thermal power plant consists of four 250MW natural gas and fuel oil burning units that is located at 100 km west off Tehran. As a result of fuel oil burning in winter time, boilers air heaters are washed and cleaned frequently. The wastewater originating from air heater washing contains suspended ...


    By University of Tehran

  • 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

  • Immobilization of copper flotation waste using red mud and clinoptilolite

    The flash smelting process has been used in the copper industry for a number of years and has replaced most of the reverberatory applications, known as conventional copper smelting processes. Copper smelters produce large amounts of copper slag or copper flotation waste and the dumping of these quantities of copper slag causes economic, environmental and space problems. The aim of this study was ...


    By SAGE Publications

  • 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 ...


  • Rapid on‐site separation of as(III) and as(V) in waters using a disposable thiol‐modified sand cartridge

    The rapid redox transformation of arsenic (As) species in waters presents a great environmental challenge in accurate determination of its concentration and toxicity. The motivation for our study is therefore to develop a method for rapid on‐site separation of As(V) and As(III) in various aqueous matrices. We synthesized a thiol‐modified sand (T‐sand), which selectively removed As(III) but did ...


    By John Wiley & Sons, Ltd.

  • Mercury mobility and availability in highly contaminated solid wastes from a chlor-alkali plant

    This article suggests an approach of sustainable development in Cuba based on the environmental impact assessment of mercurial sludge generated by a chlor-alkali Cuban plant. It consists of a study of mercury mobility and availability in the sludge samples using sequential extraction procedure. High values of total mercury content (2320 ± 40 mg/kg) in the sludge sample as well as in the ...


    By Inderscience Publishers

  • Mercury mobility and availability in highly contaminated solid wastes from a chlor–alkali plant

    This article suggests an approach of sustainable development in Cuba based on the environmental impact assessment of mercurial sludge generated by a chlor–alkali Cuban plant. It consists of a study of mercury mobility and availability in the sludge samples using sequential extraction procedure. High values of total mercury content (2320 ± 40 mg/kg) in the sludge sample as well as in the toxicity ...


    By Inderscience Publishers

  • In-Situ thermal treatment of MGP waste and creosote

    Abstract: Remediation of coal tar at former Manufactured Gas Plant (MGP) sites, and creosote associated with wood preservative sites is challenging due to the viscous nature of the dense non-aqueous phase liquid (DNAPL) and the modest solubility and vapor pressure of the contaminants of concern (COCs). DNAPL seepage into surface water bodies, as well as groundwater plumes formed by the most ...


    By TerraTherm, Inc.

  • CETCO scores a perfect 10 with RM-10 - eliminating hazardous waste disposal

    CETCO Oilfield Services’ Industrial Wastewater Treatment Division has over 30 years experience in treating industrial wastewater, helping clients meet compliance requirements and reduce costs. Additionally, CETCO Oilfield Services’ RM-10® flocculant has been successfully applied in the aerospace sector, turning a previously hazardous waste product into a delisted sludge. The aerospace facility ...


    By CETCO Energy Services

  • 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 ...


  • 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 , LLC

  • 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

  • The Safety of Genetically Modified Foods Produced through Biotechnology

    Executive Summary The Society of Toxicology (SOT) is committed to protecting and enhancing human, animal, and environmental health through the sound application of the fundamental principles of the science of toxicology. It is with this goal in mind that the SOT defines here its current consensus position on the safety of foods produced through biotechnology ...


    By Oxford University Press

  • Compost Data Tracking And Analysis

    From tip fee invoice tracking to process control to compost product sampling, information gathering, analysis and reporting are key to successful facility operations.   COMPOSTING is a highly regulated component ...


    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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