Study on Adsorption Performance of Nitrogen-doped Activated Carbon for Ciprofloxacin

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Study on Adsorption Performance of Nitrogen-doped Activated Carbon for Ciprofloxacin

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[1]NIU Xinyong,CHANG Chun,HAN Xiuli,et al.Study on Adsorption Performance of Nitrogen-doped Activated Carbon for Ciprofloxacin[J].Journal of Zhengzhou University (Engineering Science),2023,44(04):94-100,106.[doi:10.13705/j.issn.1671-6833.2023.01.007]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 04 Page number: 94-100,106 Column: Public date: 2023-06-01

Title:: Study on Adsorption Performance of Nitrogen-doped Activated Carbon for Ciprofloxacin

Author(s):: NIU Xinyong¹; CHANG Chun¹; HAN Xiuli¹ ; SONG Jiande²; 1.School of Chemical Engineering, Zhengzhou University, 450001, Zhengzhou, Henan, 2.Key Laboratory of Green Manufacturing, Henan Biochemical Chemicals, Henan Puyang 457000

Keywords:: nitrogen-doped activated carbon; adsorption; response surface methodology; ciprofloxacin; shaddock peel

CLC:: X703.1

DOI:: 10.13705/j.issn.1671-6833.2023.01.007

Abstract:: Aiming at the problem that ciprofloxacin ( CIP ) generated a large amount of ciprofloxacin-containing wastewater in the production and use process, an nitrogen-doped activated carbon (NAC) was prepared from shaddock peel by hydrothermal carbonization and activation with potassium hydroxide to treat ciprofloxacin-containing wastewater. The Box-Behnken central composite design( BBD) of response surface methodology was used to optimize the adsorption conditions of NAC. The result showed that the equilibrium data were perfectly represented by Langmuir and Koble-Corrigan isotherms, and the adsorption process was precisely described by the pseudo-secondorder kinetic model. Besides, the adsorption of CIP on NAC was mainly controlled by hydrogen-bonding, π-π electron-donor-acceptor(EDA) interaction, hydrophobic effect, electrostatic interaction and Lewis acid-base effect. The maximum monolayer adsorption capacity of CIP was 752. 05 mg / g at 298 K, implying that NAC was a promising adsorbent for the removal of CIP from aqueous solution.

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