Comparison for laboratory batch methods and large columns for evaluating leachate from monofilled solid wastes

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Journal of the Air and Waste Management Association; (United States)

DOI:https://doi.org/10.1080/10473289.1990.10466802· OSTI ID:6101844

Jackson, D R; Bisson, D L ^[1]

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1. Radian Corp., Austin, TX (United States)

Analyte concentrations in aqueous leachates from polyethylene tanks filled with five different solid wastes were compared with those in extracts from five laboratory batch procedures. Solid wastes used in the study included: electroplating sludge, electric arc furnace dust, paint incinerator ash, mine tailings, and municipal refuse incinerator ash. Batch extraction procedures used to extract the solid wastes included: Monofilled Waste Extraction Procedure (MWEP), US EPA Extraction Procedure (EP), Ham Procedure C (HAM-C), Acetate Buffer Extraction Procedure (ABEP), and Saturated Paste Procedure (PASTE). Analyte concentrations in leachate from the large columns were reproducible and characteristic of each solid waste. In most instances, analytes in column leachate reached a peak concentration at a liquid-to-solid ratio of 1:1 followed by a gradual to rapid decrease with continued leaching. Analyte concentrations found in large column leachate were related qualitatively to those found in extracts from the batch procedures which used deionized water as the extraction medium (i.e., MWEP, HAM-C, and PASTE). Batch extraction procedures using leaching medium containing acetic acid (i.e., EP) or sodium acetate buffer (i.e. ABEP) generally did not reflect analyte concentrations in leachate from the large columns. These results suggest that batch extraction procedures using acetic acid or acetate buffer are less effective for assessing the leachability of monofilled wastes than extraction methods using deionized water as the extraction fluid.

• OSTI ID: 6101844
• Journal Information: Journal of the Air and Waste Management Association; (United States), Journal Name: Journal of the Air and Waste Management Association; (United States) Vol. 40:11; ISSN JAWAE; ISSN 1047-3289
• Country of Publication: United States
• Language: English

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