TY - JOUR
T1 - Sorption and bioavailability of carbon tetrachloride in a low organic content sandy soil
AU - Zhao, Xianda
AU - Szafranski, Michael J.
AU - Maraqa, Munjed A.
AU - Voice, Thomas C.
PY - 1999
Y1 - 1999
N2 - Two sets of parallel columns Were packed with a low-organic-content aquifer soil contaminated with carbon tetrachloride (CT) and flushed with water under bioactive and abiotic saturated conditions. Both effluent and soil concentrations (by sacrificing columns) were monitored for CT. Desorption of CT from the aquifer material could be described by a two-site- nonequilibrium model. The columns were found to operate far from desorption equilibrium conditions. Inoculation with Pseudomonas sp. strain KC resulted in rapid transformation of CT in the liquid phase, but no evidence of solid- phase degradation was found. Mathematical modeling of desorption and biodegradation as sequential and independent processes appears to be justified for this soil/contaminant combination.
AB - Two sets of parallel columns Were packed with a low-organic-content aquifer soil contaminated with carbon tetrachloride (CT) and flushed with water under bioactive and abiotic saturated conditions. Both effluent and soil concentrations (by sacrificing columns) were monitored for CT. Desorption of CT from the aquifer material could be described by a two-site- nonequilibrium model. The columns were found to operate far from desorption equilibrium conditions. Inoculation with Pseudomonas sp. strain KC resulted in rapid transformation of CT in the liquid phase, but no evidence of solid- phase degradation was found. Mathematical modeling of desorption and biodegradation as sequential and independent processes appears to be justified for this soil/contaminant combination.
KW - Bioavailability
KW - Carbon tetrachloride
KW - Nonequilibrium desorption
KW - Pseudomonas sp. strain KC
UR - http://www.scopus.com/inward/record.url?scp=0032766147&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032766147&partnerID=8YFLogxK
U2 - 10.1897/1551-5028(1999)018<1755:SABOCT>2.3.CO;2
DO - 10.1897/1551-5028(1999)018<1755:SABOCT>2.3.CO;2
M3 - Article
AN - SCOPUS:0032766147
SN - 0730-7268
VL - 18
SP - 1755
EP - 1762
JO - Environmental Toxicology and Chemistry
JF - Environmental Toxicology and Chemistry
IS - 8
ER -