title: Adsorption characteristics of residual oil on amphiphilic chitosan derivative.
abstract: In this study, a novel chitosan-based polymeric surfactant, H-Oleoyl-Carboxymethyl chitosan was used as a coagulation agent for cleaning residual oil. The characteristics of H-Oleoyl-Carboxymethyl chitosan were investigated by FTIR and XRD. And the adsorption capacities of chitosan and H-O-CMCS for removing the residue oil from the wastewater of oil extraction have been investigated. H-O-CMCS exhibited a greater rate than chitosan in cleaning the residual oil from the wastewater of oil extraction at the optimum conditions. Equilibrium study, Langmuir/Freundlich adsorption models and the pseudo first- and second-order kinetic models were applied to describe the mechanism of adsorption experiments. The experimental data fitted well with the Langmuir model and the second-order kinetic model. Regeneration studies, using by the roasting and rinsing method, were undergone for three successive adsorption/desorption processes. H-O-CMCS still retained the residual oil removal capacity after regeneration.
authors.affiliation: College of Marine Life Science, Ocean University of China, 266003 Qingdao, People's Republic of China.
authors.forename: Gang Zheng
authors.initials: GZ
authors.lastname: Sun
authors.forename: Xi Guang
authors.initials: XG
authors.lastname: Chen
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Chao
authors.initials: C
authors.lastname: Feng
authors.forename: Xiao Jie
authors.initials: XJ
authors.lastname: Cheng
mesh_terms: D000327:Adsorption; D048271:Chitosan / Q000031:analogs & derivatives* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010578:Petroleum / Q000032:analysis*; D013501:Surface-Active Agents / Q000737:chemistry*; D013696:Temperature; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D010578:Petroleum; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D048271:Chitosan