Comparison of batch and column methods for assessing leachability of hazardous waste

Journal Article · Sat Sep 01 04:00:00 EDT 1984 · Environ. Sci. Technol.; (United States)

DOI:https://doi.org/10.1021/es00127a007· OSTI ID:6205708

Jackson, D R; Garrett, B C; Bishop, T A

Inorganic and organic analytes were leached from four waste samples by using batch and column leaching methods. Waste samples were electroplating sludge, fly ash, filter cake, and polystill bottoms. Leachate concentration profiles were constructed from sequential leaching of waste with distilled deionized water using a combined solution to waste ratio of 40:1. Leachate profiles produced by the batch and column methods were compared in terms of a fitted leaching profile function and variation of the experimental data. Leachate profiles produced by the two methods were significantly different for 12 of the 16 reported analytes. Analytes included Al, Ba, B, Cr, Cu, Fe, Ni, Pb, Se, Sn, Ti, Zn, and chlorinated hydrocarbons. Variation of experimental data, as represented by relative standard deviation, was over twice as great for the column method than for the batch method. This result was attributed to varying degrees of channeling that may have occurred during leaching of waste constituents using the column method. The batch extraction method offers advantages through its greater reproducibility and simplistic design, while the column method is more realistic in simulating leaching processes which occur under field conditions.

• Research Organization: Battelle Columbus Laboratories, OH
• OSTI ID: 6205708
• Journal Information: Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 18:9; ISSN ESTHA
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL WASTES
ALKALINE EARTH METALS
ALUMINIUM
ASHES
BARIUM
BORON
CHEMICAL COMPOSITION
CHROMIUM
COPPER
DATA
DEPOSITION
DISSOLUTION
ELECTRODEPOSITION
ELECTROLYSIS
ELECTROPLATING
ELEMENTS
EXPERIMENTAL DATA
FLY ASH
HAZARDOUS MATERIALS
HYDROCARBONS
INFORMATION
IRON
LEACHING
LEAD
LYSIS
MANAGEMENT
MATERIALS
MATHEMATICAL MODELS
METALS
NICKEL
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PLATING
RESIDUES
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SIMULATION
SLUDGES
STATISTICAL MODELS
SURFACE COATING
TIN
TITANIUM
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTES
ZINC