title: Macroporous crosslinked polydivinylbenzene/polyacryldiethylenetriamine (PDVB/PADETA) interpenetrating polymer networks (IPNs) and their efficient adsorption to o-aminobenzoic acid from aqueous solutions.
abstract: Macroporous crosslinked polydivinylbenzene/polyacryldiethylenetriamine (PDVB/PADETA) interpenetrating polymer networks (IPNs) were prepared in this study and their adsorption performance was investigated using o-aminobenzoic acid as the adsorbate. The results indicated that PDVB/PADETA IPNs had a large equilibrium capacity to o-aminobenzoic acid, the Freundlich and Sips models were appropriate for fitting the equilibrium data, and the isosteric enthalpy kept constant (about -30 kJ mol(-1)) with the equilibrium capacity at 5-125 mg g(-1). The pseudo-first-order rate equation characterized the kinetic data better than the pseudo-second-order rate equation. At an initial concentration of 593.1 mg L(-1) and a flow rate of 84 mL h(-1), the breakthrough and saturated capacities were 50.62 and 95.70 mg mL(-1) wet resin, respectively, and the resin column could be regenerated by 0.1 mol L(-1) of sodium hydroxide (w/v) and 40% of ethanol (v/v).
authors.affiliation: Department of Bioengineering and Environmental Science, Changsha University, Changsha, Hunan 410003, China. Electronic address: wxm@ccsu.cn.
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Wang
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
authors.forename: Limiao
authors.initials: L
authors.lastname: Chen
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
authors.forename: You-Nian
authors.initials: YN
authors.lastname: Liu
authors.affiliation: College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China.
authors.forename: Jianhan
authors.initials: J
authors.lastname: Huang
mesh_terms: D000327:Adsorption; D003432:Cross-Linking Reagents / Q000737:chemistry*; D007700:Kinetics; D011108:Polymers / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry; D062367:ortho-Aminobenzoates / Q000737:chemistry*
chemical_list: D003432:Cross-Linking Reagents; D011108:Polymers; D012996:Solutions; D062367:ortho-Aminobenzoates; D014867:Water
keywords: Adsorption; Interpenetrating polymer networks (IPNs); Polydivinylbenzene/polyacryldiethylenetriamine (PDVB/PADETA); o-Aminobenzoic acid