Synergistic catalysis by Fe3O4-biochar/peroxymonosulfate system for the removal of bisphenol a
Synergistic catalysis by Fe3O4-biochar/peroxymonosulfate system for the removal of bisphenol a
复制标题
Fe3O4-生物炭/过一硫酸盐体系协同催化去除双酚A
DOI：
10.1016/j.seppur.2021.119351
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发表时间：
2021-07-28
影响因子：
8.6
通讯作者：
Ni, Shou-Qing
中科院分区：
文献类型：
--
作者：
Cui, Xiaowei;Zhang, Shuo-Shuo;Ni, Shou-Qing
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.
