• Selective Adsorption and Reusability for Pb2+ of Chitosan-based Microporous Polymer
  • Yu J, Zheng J, Lu Q, Wang X, Zhang X, Wang Q, Yang W
  • 키토산 기반 미세다공성 고분자의 Pd2+에 대한 선택적 흡착성 및 재사용성
Abstract
A green and simple glow-discharge electrolysis plasma (GDEP) technique was used to synthesize the chitosan/ attapulgite/poly(acrylic acid-co-2-acrylamido-2-methyl-1-propanesulfonic acid) (CS/ATP/P(AA-co-AMPS)) microporous polymer. The results showed that the optimum pH for the adsorption of Pb2+, Cd2+, Co2+, and Cu2+ is 4.8, and time of adsorption equilibrium is 60 min. Adsorption kinetics fits well to the pseudo-second-order model. The maximum adsorption capacities for Pb2+, Cd2+, Cu2+ and Co2+ are 500.0, 301.7, 180.0 and 151.7 mg g-1, respectively. The microporous polymer has higher adsorption selectivity toward Pb2+ with the coexistence of Cd2+, Co2+, and Cu2+. The CS/ATP/P(AAco-AMPS) possesses promising regeneration and reusability using 2.0 g L-1 ethylenediamine tetraacetic acid tetrasodiumsalt (EDTA-4Na) solution as eluent. CS/ATP/P(AA-co-AMPS) can be used as a very promising absorbent for the separation, purification and selective recovery of Pb2+ in aqueous solution containing Cd2+, Co2+, and Cu2+ ions.

Keywords: chitosan; attapulgite; microporous polymer; adsorption selectivity; reusability

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    ISSN 2234-8077(Online)
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This Article

  • 2017; 41(3): 480-489

    Published online May 25, 2017

  • 10.7317/pk.2017.41.3.480
  • Received on Oct 31, 2016
  • Accepted on Jan 7, 2017