Adsorption of chlorinated solvents in nonionic surfactant solutions with activated carbon in a fixed bed

Title
Adsorption of chlorinated solvents in nonionic surfactant solutions with activated carbon in a fixed bed
Authors
양중석백기태권태순양지원
Keywords
GAC; perchloroethylene; SER; soil flushing; Trichloroethylene
Issue Date
2009-11
Publisher
Journal of industrial and engineering chemistry
Citation
VOL 15, NO 6, 777-779
Abstract
The adsorption characteristics of chlorinated solvents, trichloroethylene (TCE) and perchloroethylene (PCE), in surfactant solutions with granular activated carbon (GAC) were investigated with the goal of recovering the surfactant from the effluent in surfactant enhanced remediation (SER). Triton X-100 (TX100) and X-165 (TX165) were selected as model surfactants, and the GAC was Darco 20–40. The adsorption amounts for the TX100 and TX165 onto GAC was about 0.26–0.27 g/g GAC. On a GAC fixed bed, the adsorbed amounts of TCE (0.19 g/g) and PCE (0.35 g/g) in the TX165 (10 g/L) solution onto the GAC were higher than those for TCE (0.16 g/g) and PCE (0.24 g/g) in the TX100 (10 g/L) solution. Because the ratio of surfactants/chlorinated solvents in the ordinary effluent of SER is higher than 1, activated carbon adsorption could be used as an alternative of post-treatment method in SER.
URI
http://pubs.kist.re.kr/handle/201004/36761
ISSN
1226-086x
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