期刊
BIORESOURCE TECHNOLOGY
卷 359, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.127468
关键词
Biochar; Ciprofloxacin; Layered double oxides; Ball milling; Adsorption mechanism
资金
- National Natural Science Foundation of China [52170171]
- Fundamental Research Funds for the Central Universities [WUT: 193108003, 2019IVA032]
- Fundamental Cutting-edge Projects of Research Institute [2022-jcqyrw-dyz]
- Scottish Government ?
- Environment Science and Analytical Service Division (RESAS)
This study presents an innovative technique to convert sugarcane bagasse into a new biochar adsorbent for the removal of ciprofloxacin (CIP) from water. The biochar adsorbent exhibited excellent environmental safety and outstanding adsorption capacity, and it was also reusable. The study provides a promising solution for the rational placement of biowaste and the high-efficiency synthesis of biochar for antibiotic removal.
Both ciprofloxacin (CIP) and sugarcane bagasse have brought enormous pressure on environmental safety. Here, an innovative technique combining Fe-Mg-layered double oxides and ball milling was presented for the first time to convert bagasse-waste into a new biochar adsorbent (BM-LDOs-BC) for aqueous CIP removal. The maximum theoretical adsorption capacity of BM-LDOs-BC reached up to 213.1 mg g(-1) due to abundant adsorption sites provided by well-developed pores characteristics and enhanced functional groups. The results of characterization, data fitting and environmental parameter revealed that pore filling, electrostatic interactions, H-bonding, complexation and pi-pi conjugation were the key mechanisms for CIP adsorptive removal. BM-LDOs-BC exhibited satisfactory environmental safety and outstanding adsorption capacity under various environmental situations (pH, inorganic salts, humic acid). Moreover, BM-LDOs-BC possessed excellent reusability. These superiorities illustrated that BM-LDOs-BC was a promising adsorbent and created a new avenue for rational placement of biowaste and high-efficiency synthesis of biochar for antibiotic removal.
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