期刊
CHEMICAL ENGINEERING JOURNAL
卷 450, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.137896
关键词
Pinewood biochar; CuO nanomaterials; Surface modification; Pollutants of emerging concern; Degradation mechanisms
资金
- China Scholarship Council (CSC) of the Ministry of Education, P. R. China [201908410154]
This study utilized modified biochar for the immobilization of CuO to efficiently adsorb and degrade pharmaceutical compounds in polluted waters. The modified biochar exhibited a larger surface area and more functional groups, which facilitated the adsorption and degradation reactions. Response surface methodology was used to study the effects of different operating parameters on the degradation efficiency. This research provides valuable insights into the fabrication and application of sustainable and green materials for the removal of emerging wastewater contaminants.
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 CN, 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.
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