期刊
APPLIED SURFACE SCIENCE
卷 541, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.147887
关键词
Biochar; CoFe2O4; Peroxydisulfate; Ozonation; Free-radical
类别
资金
- National Natural Science Foundation of China [51902169, 21906088]
- Fundamental Research Funds for Heilongjiang Province Advantageous Characteristic Discipline [YSTSXK201855, YSTSXK201856]
- Department of Education Heilongjiang Province [135309351, 135309338]
The study introduced a composite material CoFe2O4@BC for efficient degradation of bisphenol A in water through a system combining peroxydisulfate activation and catalytic ozonation. The optimal process demonstrated higher reaction kinetics compared to traditional processes, achieving a 95.8% removal rate of bisphenol A and 63.4% TOC removal rate.
We developed a composite material of CoFe2O4-biochar (CoFe2O4@BC) with high performance of peroxydisulfate activation and catalytic ozonation for pollutant degradation in one system. Through single-factor experiments and dynamic fitting calculations, the optimal process (that is, CoFe2O4@BC-peroxydisulfate/ozonation) was used to degrade bisphenol A in water. The system revealed higher catalytic efficiencies for bisphenol A (100 mg.L-1) degradation with the removal ratio of 95.8% and TOC removal ratio of 63.4% within 8.0 min. The reaction kinetic in the CoFe2O4@BC-peroxydisulfate/ozonation process was approximately four-fold higher than that in the peroxydisulfate/ozonation process and eight-fold higher than that without any catalyst in the bare peroxydisulfate process. CoFe2O4@BC, peroxydisulfate, and ozonation showed synergism with one another. A thorough discussion was conducted to explicate the peroxydisulfate activation and catalytic ozonation mechanism via radical quenching experiments, oxygen functional group, and electrochemical analysis. Bisphenol A elimination was determined by the combined effects of free-radical dominated pathway and synergistic electron transfer.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据