Fabrication of sustainable manganese ferrite modified biochar from vinasse for enhanced adsorption of fluoroquinolone antibiotics: Effects and mechanisms

被引：217
作者：
Xiang, Yujia [1 ]
Yang, Xiao [2 ]
Xu, Zhangyi [1 ]
Hu, Wenyong [3 ]
Zhou, Yaoyu [1 ,2 ]
Wan, Zhonghao [2 ]
Yang, Yuhui [1 ]
Wei, Yuyi [1 ]
Yang, Jian [1 ]
Tsang, Daniel C. W. [2 ]
机构：
[1] Hunan Agr Univ, Coll Resources & Environm, Hunan Int Sci & Technol Cooperat Base Agr Typ Pol, Changsha 410128, Peoples R China
[2] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China
[3] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2020年 / 709卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Waste management; Biochar modification; Fluoroquinolone antibiotics; Adsorption mechanism; Wastewater decontamination; ZERO-VALENT IRON; AQUEOUS-SOLUTION; RESISTANCE GENES; SULFONAMIDE ANTIBIOTICS; ANTIBACTERIAL ACTIVITY; SURFACE MODIFICATION; CHEMICAL-PROPERTIES; WATER-TREATMENT; REMOVAL; FATE;
D O I：
10.1016/j.scitotenv.2019.136079
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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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页数：10
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