title: Solubilization of 4,4'-dibromodiphenyl ether under combined TX-100 and cosolvents.
abstract: This paper is focused on the selection of cosolvents in the remediation of contaminated soils. The aim of this study was to investigate the combined effects of Triton X-100 (TX-100) and different cosolvents on the solubilization behavior of 4,4'-dibromodiphenyl ether (BDE-15) and the washing of BDE-15 from a contaminated soil. (1)H NMR spectroscopies were used to elucidate the interactions among TX-100, cosolvents, and BDE-15 in aqueous micellar solution. Results showed that the solubility of BDE-15 was enhanced by the observed synergism among TX-100, BDE-15, and cosolvents, and the TX-100/dimethyl sulfoxide (DMSO) system exhibited the best performance in the solubilization of BDE-15. Similar synergism was further evidenced in the washing of BDE-15 from a contaminated soil. With 10 % (v/v) DMSO and 6.4 mM TX-100 solution added, considerable synergistic effect was achieved in TX-100/DMSO system, leading to the highest removal efficiency (92.9 %) of BDE-15 from the soil, relative to that of 67.3 % with TX-100 alone at the same concentration.
authors.affiliation: School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.
authors.forename: Xingjian
authors.initials: X
authors.lastname: Yang
authors.forename: Guining
authors.initials: G
authors.lastname: Lu
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.forename: Chuling
authors.initials: C
authors.lastname: Guo
authors.forename: Hongliang
authors.initials: H
authors.lastname: Zhang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Dang
mesh_terms: D001713:Biphenyl Compounds; D004787:Environmental Pollution; D055768:Halogenated Diphenyl Ethers / Q000737:chemistry*; D008823:Micelles; D008956:Models, Chemical; D017830:Octoxynol / Q000737:chemistry*; D012987:Soil; D012989:Soil Pollutants / Q000737:chemistry*; D012995:Solubility; D012996:Solutions; D012997:Solvents / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; D055768:Halogenated Diphenyl Ethers; D008823:Micelles; D012987:Soil; D012989:Soil Pollutants; D012996:Solutions; D012997:Solvents; D017830:Octoxynol; C065774:4,4'-dibromobiphenyl; C558403:dibromodiphenyl ether