Sorption and cosorption of organic contaminant on surfactant-modified soils

Citation
B. Gao et al., Sorption and cosorption of organic contaminant on surfactant-modified soils, CHEMOSPHERE, 43(8), 2001, pp. 1095-1102
Citations number
20
Categorie Soggetti
Environment/Ecology
Journal title
CHEMOSPHERE
ISSN journal
00456535 → ACNP
Volume
43
Issue
8
Year of publication
2001
Pages
1095 - 1102
Database
ISI
SICI code
0045-6535(200106)43:8<1095:SACOOC>2.0.ZU;2-G
Abstract
Three kinds of soils were modified with the cationic surfactants, hexadecyl trimethylammonium (HDTMA) bromide and tetramethylammonium (TMA) bromide to increase their sorptive capabilities. Sorption of chlorobenzene in simulate d groundwater by these soils was investigated. HDTMA-modified soil has a hi gher ability to sorb chlorobenzene from simulated groundwater than unmodifi ed soil. TMA-modified soil did not show the superiority. HDTMA thus can be used to modify soil to improve its sorption capability. Cosorption of chlor obenzene in simulated groundwater in the absence or presence of nitrobenzen e and dichloromethane on HDTMA-modifed soil was also investigated. Nitroben zene facilitated sorption of chlorobenzene on all HDTMA-modified soil. Dich loromethane did not influence the sorption of chlorobenzene by HDTMA-modifi ed soil. The results suggest that HDTMA-modified soil is a highly effective sorbent for chlorobenzene and multiple organic compounds did not impede th e uptake of chlorobenzene. (C) 2001 Elsevier Science Ltd. All rights reserv ed.