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Polycyclic Aromatic Compounds Volume 39, 2019 - Issue 3
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Original Articles

Ofloxacin Adsorption on Chitosan/Biochar Composite: Kinetics, Isotherms, and Effects of Solution Chemistry

Chunmiao ZhuCollege of Environmental Science and Engineering, Ocean University of China, Qingdao, ChinaView further author information
,
Yinhai LangCollege of Environmental Science and Engineering, Ocean University of China, Qingdao, China;Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, ChinaCorrespondence[email protected]
View further author information
,
Ben LiuCollege of Environmental Science and Engineering, Ocean University of China, Qingdao, ChinaView further author information
&
Huaxuan ZhaoCollege of Environmental Science and Engineering, Ocean University of China, Qingdao, ChinaView further author information
Pages 287-297 | Received 01 Dec 2017, Accepted 07 Apr 2018, Published online: 03 May 2018
 
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GRAPHICAL ABSTRACT

ABSTRACT

Chitosan/reed biochar composite (CRBC) was synthesized and employed as an adsorbent to remove ofloxacin (OFL) from aqueous solution. The physical and chemical properties of CRBC were characterized by SEM, FTIR, and BET surface area. The initial OFL concentration, solution pH, and ion strength affecting the adsorption process were investigated. Batch adsorption experiments revealed that OFL adsorption amounts on CRBC increased with the increasing of initial OFL concentration. Furthermore, the solution pH and ion strength had significant effects on OFL adsorption. The adsorption was enhanced in neutral pH condition and was inhibited by the presence of NaCl. The adsorption kinetics was fitted by the pseudo-second-order model with higher correlation coefficients. The adsorption isotherms were better described by the Langmuir model, indicating monolayer adsorption process. The aim of current work was to develop a reed biochar and chitosan composite and explore the adsorption behavior of OFL.

Additional information

Funding

This work was supported by the Natural Science Foundation of Shandong Province (ZR2016EEM28).

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