Oxidative Magnetic Modification of Pristine Biochar Assisted by Ball-Milling for Removal of Methylene Blue and Tetracycline in Aqueous Solution

Yijia Chen, Linzhou Li, Qin Wen, Run Yang, Yiming Zhao, Xin Rao, Jihui Li, Shuying Xu and Hui Song
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Yijia Chen: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Linzhou Li: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Qin Wen: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Run Yang: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Yiming Zhao: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Xin Rao: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Jihui Li: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Shuying Xu: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
Hui Song: Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China

Sustainability, 2022, vol. 14, issue 15, 1-15

Abstract: Magnetic modification holds a significant place for regulating the performance of biochar for wastewater treatment, endowing its magnetic separation property and facilitating its wide application. Herein, a ball-milled oxidative magnetic modification of pristine biochar was employed to manufacture magnetic biochar using K 2 FeO 4 as a precursor and internal oxidant for removal of methylene blue and tetracycline from aqueous solution. The characterizations showed that magnetic iron oxide and oxygen-containing groups were simultaneously introduced. Moreover, specific surface area and pore volume were remarkably enhanced from 0.7 m 2 /g to 71.2 m 2 /g and from 0.001 cm 3 /g to 0.034 cm 3 /g, respectively. The magnetic biochar showed that 133.76 mg/g and 58.34 mg/g adsorption capacities for MB and TC, respectively, significantly transcended the pristine biochar. Its adsorption was mainly dominated by oxygen-containing groups and iron species. This would provide an efficient oxidative magnetic modification for the preparation of oxygen-containing group-rich magnetic biochar for the removal of MB and TC.

Keywords: ball-milling; oxidative magnetic modification; magnetic biochar; methylene blue; tetracycline (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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