催化作用
双酚A
化学
吸附
煅烧
生物炭
纳米复合材料
过氧二硫酸盐
共沉淀
降级(电信)
多相催化
激进的
无机化学
化学工程
热解
有机化学
工程类
电信
环氧树脂
计算机科学
作者
Jianyuan Zhen,Shuoshuo Zhang,Xuming Zhuang,Shakeel Ahmad,Taeho Lee,Hongyu Si,Chengbo Cao,Shou‐Qing Ni
标识
DOI:10.1016/j.jwpe.2021.102078
摘要
Magnetic CuO-Fe3O4-Biochar (CuO-Fe3O4-BC) nanoparticles were successfully synthesized by two steps of coprecipitation and calcination and were characterized as a heterogeneous catalyst to activate peroxymonosulfate for bisphenol A (BPA) degradation. The reaction process and mechanism of heterogeneous catalyst adsorption and synergistic catalytic oxidation for the removal of BPA in CuO-Fe3O4-BC/PMS system were extensively evaluated in view of the practical applications. Results indicated that the addition of CuO achieved a high removal efficiency of BPA in a wide pH range. BPA removal efficiency reached 100 % in 30 min by using 2.0 g/L CuO-Fe3O4-BC and 5 mM PMS at a pH of 9.0, and SO4− played an essential role in the degradation process. The synergistic effect of copper ions and iron ions accelerated the circulation of Fe (II)/Fe (III) and Cu (I)/Cu (II), which improved the electron transfer on the catalyst surface and increased the free radical generation rate. CuO, Fe3O4 and BC achieved a synergistic effect between adsorption and catalysis. The stability and reusability of CuO-Fe3O4-BC/PMS system offer an approach in organic pollutant wastewater treatment since it has great advantages of high removal efficiency, conducting under neutral conditions, energy-saving and avoiding the common issues in traditional Fenton reactions.
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