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Environmental Science and Pollution Research

, Volume 26, Issue 4, pp 3814–3822 | Cite as

Preparation of chitosan/Co-Fe-layered double hydroxides and its performance for removing 2,4-dichlorophenol

  • Bo YangEmail author
  • Jun Liu
  • Zhiguo Liu
  • Yacheng Wang
  • Jiaming Cai
  • Lingjie Peng
Research Article
  • 86 Downloads

Abstract

Chitosan/Co-Fe-layered double hydroxides (CS/LDHs) were prepared by coprecipitation method, which is a kind of composite material with excellent properties. The structure of CS/LDHs was characterized by SEM, FTIR, and XRD, which proved that chitosan (CS) was successfully induced into hydrotalcite and CS/LDHs still possess the structural characteristics of hydrotalcite. The adsorption of 2,4-dichlorophenol (2,4-DCP) was studied with CS/LDHs and LDHs as adsorbent separately. The activity of immobilized laccase (L-CS/LDHs) with CS/LDHs as carrier is significantly better than that of the one (L-LDHs) using LDHs as carrier. Under the optimum conditions (pH = 6, 55 °C, 48 h), L-CS/LDHs exhibited better removal performance for 2,4-DCP (81.53%, 100 mg/L) than LDHs (63.55%); the removal of 2,4-DCP by L-CS/LDHs is excellent, exceeding 97% as its initial concentration below 60 mg/L. It includes the catalytic action of laccase and dechlorination of Fe3+ and Co2+, and the adsorption can be ignored under the optimal conditions. After 5 cycles, it maintained 67% (L-CS/LDHs) and 54% (L-LDHs) of the original removal.

Keywords

Chitosan/Co-Fe-layered double hydroxides 2,4-DCP Immobilization Laccase 

Notes

Funding information

This study is supported by the National key R & D projects of China (2016YFC0208100).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Bo Yang
    • 1
    Email author
  • Jun Liu
    • 1
  • Zhiguo Liu
    • 1
  • Yacheng Wang
    • 1
  • Jiaming Cai
    • 1
  • Lingjie Peng
    • 1
  1. 1.College of Environment and Safety EngineeringQingdao University of Science & TechnologyQingdaoChina

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