title: Single-solute and bisolute sorption of phenol and trichloroethylene from aqueous solution onto modified montmorillonite and application of sorption models.
abstract: The single-solute and bisolute sorption behaviour of phenol and trichloroethylene, two organic compounds with different structures, onto cetyltrimethylammonium bromide (CTAB)-montmorillonite was studied. The monolayer Langmuir model (MLM) and empirical Freundlich model (EFM) were applied to the single-solute sorption of phenol or trichloroethylene from water onto monolayer or multilayer CTAB-montmorillonite. The parameters contained in the MLM and EFM were determined for each solute by fitting to the single-solute isotherm data, and subsequently utilized in binary sorption. The extended Langmuir model (ELM) coupled with the single-solute MLM and the ideal adsorbed solution theory (IAST) coupled with the single-solute EFM were used to predict the binary sorption of phenol and trichloroethylene onto CTAB-montmorillonite. It was found that the EFM was better than the MLM at describing single-solute sorption from water onto CTAB-montmorillonite, and the IAST was better than the ELM at describing the binary sorption from water onto CTAB-montmorillonite.
authors.affiliation: School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510641, China. ppchdwu@scut.edu.cn
authors.forename: C D
authors.initials: CD
authors.lastname: Wu
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: C X
authors.initials: CX
authors.lastname: Hu
authors.forename: M H
authors.initials: MH
authors.lastname: He
mesh_terms: D000327:Adsorption; D001546:Bentonite / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D014241:Trichloroethylene / Q000737:chemistry*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D010636:Phenols; D014874:Water Pollutants, Chemical; D014867:Water; D001546:Bentonite; D014241:Trichloroethylene