title: Selection of surfactant in remediation of DDT-contaminated soil by comparison of surfactant effectiveness.
abstract: With an aim to select the most appropriate surfactant for remediation of DDT-contaminated soil, the performance of nonionic surfactants Tween80, TX-100, and Brij35 and one anionic surfactant sodium dodecyl benzene sulfonate (SDBS) in enhancement of DDT water solubility and desorption of DDT from contaminated soil and their adsorption onto soil and ecotoxicities were investigated in this study. Tween80 had the highest solubilizing and soil-washing ability for DDT among the four experimental surfactants. The adsorption loss of surfactants onto soil followed the order of TX-100 > Tween80 > Brij35 > SDBS. The ecotoxicity of Tween80 to ryegrass (Lolium perenne L.) was lowest. The overall performance considering about the above four aspects suggested that Tween80 should be selected for the remediation of DDT-contaminated soil, because Tween80 had the greatest solubilizing and soil-washing ability for DDT, less adsorption loss onto soil, and the lowest ecotoxicity in this experiment.
authors.affiliation: Key Lab of Groundwater Resources and Environment, Ministry of Education, College of Environment and Resources, Jilin University, No. 2519 Jiefang Street, Changchun, 130021, China, cwwjldx@sina.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Guo
authors.forename: Weiwei
authors.initials: W
authors.lastname: Chen
authors.forename: Yueming
authors.initials: Y
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Chen
authors.forename: Linhui
authors.initials: L
authors.lastname: Li
authors.forename: Guanzhu
authors.initials: G
authors.lastname: Wang
mesh_terms: D000327:Adsorption; D003634:DDT / Q000032:analysis / Q000737:chemistry*; D052918:Environmental Restoration and Remediation / Q000379:methods*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry*; D012995:Solubility; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D012987:Soil; D012989:Soil Pollutants; D013501:Surface-Active Agents; D003634:DDT
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