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Open AccessArticle

Adsorptive Removal of Fluoroquinolone Antibiotics Using Bamboo Biochar

by Yanbin Wang 1, Jian Lu 2,*, Jun Wu 3,*, Qing Liu 2, Hua Zhang 2 and Song Jin 4
1
Zhejiang Forestry Academy, Hangzhou 310023, China
2
Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
3
Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
4
Department of Civil and Architectural Engineering, University of Wyoming, Laramie, WY 82071, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Zhiyong Jason Ren
Sustainability 2015, 7(9), 12947-12957; https://doi.org/10.3390/su70912947
Received: 28 July 2015 / Revised: 13 September 2015 / Accepted: 17 September 2015 / Published: 22 September 2015
(This article belongs to the Special Issue Sustainable Biochar)
The occurrence of fluoroquinolone antibiotics in wastewater has drawn great attention. Adsorption of widely used fluoroquinolone antibiotics (enrofloxacin and ofloxacin) in wastewater using bamboo biochar was investigated. More than 99% of fluoroquinolone antibiotics were removed from the synthetic wastewater through adsorption. Adsorption capacities of bamboo biochar slightly changed when pH increased from 3.0 to 10.0. The adsorption capacity of bamboo biochar increased sharply when the initial concentration of enrofloxacin or ofloxacin increased from 1 to 200 mg L−1 and then began to plateau with further increases in initial concentration. The maximum adsorption capacity (45.88 ± 0.90 mg·g−1) was observed when the ratio of bamboo biochar to fluoroquinolone antibiotics was 10. The enrofloxacin adsorption capacity of bamboo biochar decreased from 19.91 ± 0.21 mg·g−1 to 14.30 ± 0.51 mg·g−1 while that of ofloxacin decreased from 19.82 ± 0.22 mg·g−1 to 13.31 ± 0.56 mg·g−1 when the NaCl concentrations increased from 0 to 30 g·L−1. The adsorptions of fluoroquinolone on bamboo biochar have isotherms that obeyed the Freundlich model (r2 values were in the range of 0.990–0.991). View Full-Text
Keywords: fluoroquinolone; antibiotics; wastewater; bamboo biochar; adsorption fluoroquinolone; antibiotics; wastewater; bamboo biochar; adsorption
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Wang, Y.; Lu, J.; Wu, J.; Liu, Q.; Zhang, H.; Jin, S. Adsorptive Removal of Fluoroquinolone Antibiotics Using Bamboo Biochar. Sustainability 2015, 7, 12947-12957.

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