title: Adsorption of catechol from aqueous solution by aminated hypercrosslinked polymers.
abstract: Adsorption of catechol from aqueous solution with the hypercrosslinked polymeric adsorbent NDA-100 and its derivatives AH-1, AH-2 and AH-3 aminated by dimethylamine, the commercial resin Amberlite XAD-4 and weakly basic anion exchanger resin D301 was compared. It was found that the aminated hypercrosslinked resins had the highest adsorption capacities among the tested polymers. The empirical Freundlich equation was successfully employed to describe the adsorption process. Specific surface area and micropore structure of the adsorbent, in company with tertiary amino groups on matrix affected the adsorption performance towards catechol. In addition, thermodynamic study was carried out to interpret the adsorption mechanism. Kinetic study testified that the tertiary amino groups on the polymer matrix could decrease the adsorption rate and increase the adsorption apparent activation energy.
authors.affiliation: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093, China. synju@163.com
authors.forename: Yue
authors.initials: Y
authors.lastname: Sun
authors.forename: Xiao-Tao
authors.initials: XT
authors.lastname: Li
authors.forename: Chao
authors.initials: C
authors.lastname: Xu
authors.forename: Jin-Long
authors.initials: JL
authors.lastname: Chen
authors.forename: Ai-Min
authors.initials: AM
authors.lastname: Li
authors.forename: Quan-Xing
authors.initials: QX
authors.lastname: Zhang
mesh_terms: D000327:Adsorption; D000588:Amines / Q000737:chemistry*; D002396:Catechols / Q000737:chemistry*; D007700:Kinetics; D011108:Polymers / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry*
chemical_list: D000588:Amines; D002396:Catechols; D011108:Polymers; D012996:Solutions; D014867:Water; C034221:catechol