title: Polyphenylene sulfide based anion exchange fiber: synthesis, characterization and adsorption of Cr(VI).
abstract: A fibrous strong base anion exchanger (QAPPS) was prepared for the first time via chloromethylation and quaternary amination reaction of polyphenylene sulfide fiber (PPS), and its physical-chemical structure and adsorption behavior for Cr(VI) were characterized by FTIR, Energy Dispersive Spectrometry, TG-DTG, elemental analysis and batch adsorptive technique, respectively. The novel fibrous adsorbent could effectively adsorb Cr(VI) over the pH range 1-12, the maximum adsorption capacity was 166.39 mg/g at pH 3.5, and the adsorption behavior could be described well by Langmuir isotherm equation model. The adsorption kinetics was studied using pseudo first-order and pseudo second-order models, and the t1/2 and equilibrium adsorption time were 5 and 20 min respectively when initial Cr(VI) concentration was 100 mg/L. The saturated fibers could be regenerated rapidly by a mixed solution of 0.5 mol/L NaOH and 0.5 mol/L NaCl, and the adsorption capacity was well maintained after six adsorption-desorption cycles.
authors.affiliation: College of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China.
authors.forename: Jiajia
authors.initials: J
authors.lastname: Huang
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.forename: Lingling
authors.initials: L
authors.lastname: Bai
authors.forename: Siguo
authors.initials: S
authors.lastname: Yuan
mesh_terms: D000327:Adsorption; D000837:Anion Exchange Resins / Q000138:chemical synthesis*; D002857:Chromium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D011108:Polymers / Q000737:chemistry*; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D000837:Anion Exchange Resins; D011108:Polymers; D014874:Water Pollutants, Chemical; D002857:Chromium; C041325:polyphenylene sulfide