STP999: Methods for Evaluating Solidified Waste

    Hannak, P
    Head, Physical/Chemical Processes Section, and head, Process Development Group, Alberta Environmental Centre, Vegreville, Alberta

    Liem, AJ
    Head, Physical/Chemical Processes Section, and head, Process Development Group, Alberta Environmental Centre, Vegreville, Alberta

    Côtè, PL
    Process development engineer, Wastewater Technology Centre, Environmental Protection Service, Environment Canada, Burlington, Ontario

    Pages: 9    Published: Jan 1988


    Abstract

    A number of methods for characterizing solidified waste are currently being assessed in the EC/EPA/AEC/Industry Cooperative Study. These are short-term laboratory tests which yield information on material properties (bulk density, specific gravity, and moisture content), ability to maintain physical integrity (unconfined compressive strength and weathering resistance—freeze/thaw and wet/dry), potentials for release of contaminants by advective transport (permeability) and dissolution (acid neutralization capacity, Toxicity Characteristic Leaching Procedure—TCLP—and equilibrium leaching), indication of long-term rate of contaminant release (dynamic leaching), and containment mechanisms (sequential extraction). A brief description is given of these tests, their rationale, and their utilization.

    Some of the methods were developed elsewhere and have been adopted or adapted with minor modifications. Others have been developed specifically for the cooperative study. Emphasis is thus given to the latter, specifically to the method for quantifying resistance to wet/dry cycling. The development of this method and preliminary results are described, showing the reproducibility and ability to detect differences in weathering resistance of various solidified products.

    Keywords:

    solidification, stabilization, fixation, testing, wet/dry, weathering, waste


    Paper ID: STP26432S

    Committee/Subcommittee: D34.01

    DOI: 10.1520/STP26432S


    CrossRef ASTM International is a member of CrossRef.