生物炭
化学
吸附
降级(电信)
比表面积
傅里叶变换红外光谱
核化学
单线态氧
光降解
废水
过硫酸盐
罗丹明B
响应面法
化学工程
光催化
热解
有机化学
色谱法
废物管理
氧气
催化作用
计算机科学
工程类
电信
作者
Yongtao Xue,Yutong Guo,Xi Zhang,Mohammadreza Kamali,Tejraj M. Aminabhavi,Lise Appels,Raf Dewil
标识
DOI:10.1016/j.cej.2022.137896
摘要
Pinewood biochar was prepared and modified with KOH and used for the immobilization of CuO for efficient adsorption and degradation of model pharmaceutical compounds including ciprofloxacin and carbamazepine from polluted waters. Techniques used were X-ray diffraction, Scanning electron microscopy, Fourier transmission infrared spectroscopy, Brunauer–Emmett–Teller surface area and porosity analysis, which indicated that specific surface area of K-BC was ten-times higher than that of the pristine BC. More functional groups, such as C-N, COO–, and C = C were present onto the surface of the modified BC, which facilitated the adsorption of pollutants to promote degradation reactions. K-BC-CuO showed complete degradation of the pharmaceuticals in the presence of persulfate (PS). The response surface methodology revealed that the effects of various operating parameters on the degradation of CBZ, which followed the sequence: temperature > PS concentration > initial CBZ concentration > K-BC-CuO dosage > pH. The degradation mechanisms were investigated to prove that singlet oxygen is the dominant species for CIP and CBZ degradation. This research provides new insights into the fabrication and application of sustainable and green materials for the removal of emerging wastewater contaminants.
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