Physical and chemical methods for the characterization of hazardous wastes

Elements and Compounds in Waste Materials

“…as hazardous or nonhazardous Identification of leachable constituents Determine which constituents of a waste are subject to dissolution upon contact with a liquid Evaluation of process modifications Determine of modifications to a waste-generating process result in less leachable waste Design of leachate treatment systems Obtain a typical leachate to use for treatability experiments Field concentration estimates Express leaching over time (e.g., to be used as a source in transport modeling) Parameter quantification for modeling Quantify partition coefficients and kinetic parameters for us in transport modeling ucts, because their elution is primarily controlled by diffusion when the integrity of the sample is not compromised. The most common shaking test is the 1986 US EPA TCLP-test ("toxicity characterizing leaching procedure"), where size-reduced waste material is extracted with an acidic leaching liquid, the pH of which is determined by the alkalinity of the waste sample (Francis et al 1989). The SOSUVtest (named after the Studiegroep Outwikkeling Standard Uitloogentesten Verbrandingsresiduen ( Van der Sloot et al 1984), was developed in the Netherlands and combines a column test with a five-stage dynamic vessel test (cascade test).…”