Removal of methyl orange from water by Fenton oxidation of magnetic coconut-clothed biochar. Issue 38 (30th August 2022)

• Record Type: Journal Article
• Authors: Xu, Jia; Ma, Qianhui; Feng, Wen; Zhang, Xiaopeng; Lin, Qiang; You, Chenghang; Wang, Xianghui
• Is Part Of: RSC advances. Volume 12:Issue 38(2022)
• Page Start: 24439
• Page End: 24446
• Publication Date: 2022-08-30
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra03545f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Water pollution has become a serious environmental problem to date. Advanced oxidation processes (AOP) have been widely applied in water treatments. Abstract : Water pollution has become a serious environmental problem to date. Advanced oxidation processes (AOP) have been widely applied in water treatments. However, the traditional Fenton reaction based on the Fe 2+ –H2 O2 system has obvious drawbacks, limiting further practical applications. In this work, an Fe3 O4 and nano-clothed biochar (Fe3 O4 /CBc) composite was prepared through a precipitation method and used for the degradation of methyl orange (MO) in water. The Fe3 O4 /CBc composite was characterized by FTIR, BET, SEM, TEM, XRD, and VSM. In addition, the adsorption/catalytic oxidation of MO were also tested. Specifically, Fe3 O4 /CBc had a rough surface, abundant porous structure, high surface area of 835.82 m 2 g −1, and obvious magnetization. The catalyst showed rather high performance towards MO removal. The optimal conditions for MO removal were as follows: the dosage of hydrogen peroxide was 16 mmol L −1, pH = 3, the temperature was 35 °C, and the addition amount of adsorbent was 10 mg. Under optimal conditions, the MO removal rate can be higher than 99%. The synergistic effect between catalytic degradation and adsorption in removing MO was also observed. Besides high performance in removing MO, Fe3 O4 /CBc also exhibited high stability, easy magnetic separation, and great reusability, as well as the potential to be developed as a new heterogeneous Fenton catalyst.