Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 709, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.136079
Keywords
Waste management; Biochar modification; Fluoroquinolone antibiotics; Adsorption mechanism; Wastewater decontamination
Categories
Funding
- National Natural Science Foundation of China [51709103]
- Natural Science Foundation of Hunan Province, China [2018JJ3242]
- China Postdoctoral Science Foundation [2018M630901]
- Hong Kong Scholars Program [XJ2018029]
- Training Programfor Excellent Young Innovators of Changsha [kq1802020]
- Double First-Class Construction Project of Hunan Agricultural University [kxk201801005]
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An effective adsorbent towards fluoroquinolone antibiotics was synthesized via a facile two-step approach, the co-precipitation of Fe, Mn with vinasse wastes and then pyrolysis under controlled conditions which denoted as FMB. Its adsorption behavior was examined based on a batch adsorption experiment of fluoroquinolone antibiotics pefloxacin (PEF) and ciprofloxacin (CIP). Experimental factors, such as pH, adsorbent dose, ionic strength, contact time and temperature have done a great deal to influence the adsorption of PEF and CIP. The FMB demonstrated excellent performance in reusability tests towards to both PEF and CIP, which showed that the recycling efficiency of PEF and CIP could remain similar to 55% and similar to 80% after five recycle cycles, respectively. The dominated adsorption mechanisms included pore filling effect, pi-pi stacking interaction, pi-pi EDA, hydrogen bonding and hydrophobicity. Overall, this work presented FMB was recognized as an effective, environmental-friendly and magnetically separable adsorbent for alleviating fluoroquinolone antibiotics contamination from water. (C) 2019 Elsevier B.V. All rights reserved.
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