Desorptive behavior of trichloroethylene in contaminated soil

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00014a009· OSTI ID:5284190

Paviostathis, S G; Jaglal, K ^[1]

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1. Clarkson Univ., Potsdam, NY (USA)

An investigation of the desorptive behavior of trichloroethylene (TCE) in a long-contaminated soil (silty clay) was conducted. Batch desorption of TCE reached steady state within 24 h. The temporal dependence of TCE desorption was reinforced in reequilibration studies, where a persistent fraction of TCE desorbed very slowly. The effect of pH was negligible and TCE desorption decreased with increases in ionic strength beyond 0.1 M. Batch adsorption of TCE reached an apparent steady state in 3 days. The soil adsorption partition coefficient for TCE was estimated as 11.7 mL/g. Adsorption and desorption were not reversible over short equilibrium times (on the order of days). With a short soil column, continuous TCE desorption showed an initial fast rate and a subsequent slower rate, revealing the high persistence of ppb levels of TCE in long-contaminated soil.

• OSTI ID: 5284190
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 25:2; ISSN ESTHA; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
CHLORINATED ALIPHATIC HYDROCARBONS
CLAYS
DATA
DESORPTION
EXPERIMENTAL DATA
HALOGENATED ALIPHATIC HYDROCARBONS
HAZARDOUS MATERIALS
INFORMATION
KINETICS
MATERIALS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
SOILS