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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (4): 71-78.doi: 10.3969/j.issn.0253-2417.2020.04.010

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Adsorption Characteristics of Ciprofloxacin by Biomass-based Activated Carbon

Tingting ZHANG1,Xiuli HAN1,2,*(),Ying LIU1,Chunling DONG1,Chun CHANG1,2   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
    2. Henan Center for Outstanding Overseas Scientists, Zhengzhou 450001, China
  • Received:2020-04-08 Online:2020-08-28 Published:2020-08-21
  • Contact: Xiuli HAN E-mail:xlhan@zzu.edu.cn

Abstract:

The activated carbon derived biomass waste corncob was investigated for the adsorption of antibiotic ciprofloxacin(CIP) from aqueous solution.The Box-Behnken design(BBD) of response surface methodology was used to optimize the operating conditions, the optimum adsorption conditions were found to be adsorption time of 537 min, adsorbent dosage of 0.46 g/L and pH 4.92. The results showed that the equilibrium adsorption amount of ciprofloxacin increased with the increase of temperature, and the adsorption equilibrium data were found to fit the Redlich-Peterson model and Sips model well. The thermodynamic parameters revealed the adsorption process of CIP on activated carbon was a spontaneous, endothermic and increasing entropy process.The Elovich model could perfectly describe the adsorption process of ciprofloxacin on activated carbon.At 298 K, the maximum adsorption capacity of ciprofloxacin was 238.01 mg/g, indicating that the corncob-based activated carbon was a promising adsorbent for the removal of ciprofloxacin from aqueous solution.

Key words: activated carbon, corncob, ciprofloxacin, response surface methodology, adsorption

CLC Number: