Synergistic catalysis by Fe3O4-biochar/peroxymonosulfate system for the removal of bisphenol a

被引：72

作者：

Cui, Xiaowei ^{[1
,2
]}

Zhang, Shuo-Shuo ^{[2
]}

Geng, Yong ^{[1
]}

Zhen, Jianyuan ^{[2
]}

Zhan, Jinhua ^{[3
]}

Cao, Chengbo ^{[3
]}

Ni, Shou-Qing ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai, Peoples R China

[2] Shandong Univ, Sch Environm Sci & Engn, Shandong Prov Key Lab Water Pollut Control & Reso, Qingdao, Shandong, Peoples R China

[3] Shandong Univ, Dept Chem, Key Lab Colloid & Interface Chem, Educ Minist, Jinan, Shandong, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2021年 / 276卷

基金：

中国国家自然科学基金;

关键词：

AOPs; Biochar; Catalysis; Fe3O4-BC; Peroxymonosulfate; Synergistic effect; HETEROGENEOUS ACTIVATION; ENHANCED DEGRADATION; ORGANIC POLLUTANTS; ADVANCED OXIDATION; MAGNETIC BIOCHAR; PERSULFATE; PEROXYMONOSULFATE; PERFORMANCE; COMPOSITE; KINETICS;

D O I：

10.1016/j.seppur.2021.119351

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The nanoFe(3)O(4)-biochar (Fe3O4-BC) heterogeneous catalyst was synthesized by coprecipitation method and the mechanism of Fe3O4-BC/peroxymonosulfate (Fe3O4-BC/PMS) system adsorption and synergistic catalysis for the removal of bisphenol A (BPA) were studied. The effect of initial pH, Fe3O4-BC load, PMS concentration on the catalyst activity were systematically evaluated. The results showed the synergistic effect between BC and Fe3O4 can greatly improve the removal efficiency of BPA in the Fe3O4-BC/PMS system. BPA removal efficiency gained 100% in 90 min at pH 3.0 with PMS 5 mM, Fe3O4-BC load 2.0 g/L and BPA 20 mg/L. Sulfate radical (SO4 center dot-) and hydroxyl radicals (center dot OH) was determined as the reactive species in the Fe3O4-BC/PMS system, and SO4(center dot-) was the major reactive species. Fe3O4-BC remained high active and the iron loss was only 2.13 mg/L when the pH was 3.0 after five recycles, which indicates that Fe3O4-BC catalyst has a good reusability potential and practical applications.

引用

页数：8

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