Adsorption characteristics of residual oil on amphiphilic chitosan derivative.
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.
Sun
Gang Zheng
GZ
College of Marine Life Science, Ocean University of China, 266003 Qingdao, People's Republic of China.
Chen
Xi Guang
XG
Zhang
Jing
J
Feng
Chao
C
Cheng
Xiao Jie
XJ
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*
D010578:Petroleum; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D048271:Chitosan