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Preparation of ammonium-modified cassava waste-derived biochar and its evaluation for synergistic adsorption of ternary antibiotics from aqueous solution

Authors
Luo, JiweiLi, XueGe, ChengjunMueller, KarinYu, HuameiDeng, HuiShaheen, Sabry M.Tsang, Daniel C. W.Bolan, Nanthi S.Rinklebe, JorgOk, Yong SikGao, BinWang, Hailong
Issue Date
15-11월-2021
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Keywords
Antibiotics; Chemical modification; Engineered biochar; Wastewater treatment
Citation
JOURNAL OF ENVIRONMENTAL MANAGEMENT, v.298
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume
298
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/137645
DOI
10.1016/j.jenvman.2021.113530
ISSN
0301-4797
Abstract
Mono- and co-sorption of the three antibiotics i.e., norfloxacin (NOR), sulfamerazine (SMR) and oxytetracycline (OTC), to raw and NH4+-modified cassava waste biochar added to aqueous solutions were investigated. The NH4+-modified biochar showed higher sorption affinity for both NOR and SMR than the raw biochar, while the raw biochar showed higher sorption affinity for OTC than the modified biochar. The highest sorption to both biochars in both the mono- and competitive sorption systems was found for OTC followed by NOR and SMR. Sorption equilibrium in all systems analyzed was reached within 15 h. Electrostatic interactions among the ionic antibiotics in the multicomponent solution increased NOR and SMR sorption to both biochars. Antibiotics' monoand co-sorption to biochars decreased with increasing solution pH. The co-sorption of NOR and SMR to the two biochars was regulated by 7C-7C electron-donor-acceptor (EDA) interactions; besides, electrostatic interactions and Hydrogen (H-) bonding played an important part. Cation bridging might have been a potential mechanism to contribute to SMR sorption to the raw biochar, and OTC sorption to the NH4+-modified biochar. These observations will improve our understanding of the simultaneous removal of multiple antibiotics from water or wastewater.
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