光催化剂TiO/稻壳生物炭对废水中微量污染物的吸附及光降解作用

Adsorption and photodegradation of micropollutant in wastewater by photocatalyst TiO/rice husk biochar.

作者信息

Thuan Doan Van, Chu Thi Thu Hien, Thanh Ha Do Thi, Le Minh Vien, Ngo Hoang Long, Le Cong Lap, Thi Huong Pham

机构信息

VKTech Research Center, NTT Hi-Tech Institute, Nguyen Tat Thanh University, Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City, Viet Nam.

Department of Chemistry, Faculty of Building Materials, Ha Noi University of Civil Engineering (HUCE), Giai Phong, Hai Ba Trung, Hanoi, 10000, Viet Nam.

出版信息

Environ Res. 2023 Nov 1;236(Pt 2):116789. doi: 10.1016/j.envres.2023.116789. Epub 2023 Jul 29.

DOI:10.1016/j.envres.2023.116789

PMID:37517481

Abstract

With the acceleration of global industrialization, organic pollutants have become a threat to ecological safety and human health. This work prepared TiO/rice husk biochar (TiO/BC) for removal of bisphenol A (BA) micropollutant in wastewater. Experiment results revealed a low BA removal efficiency by TiO/BC was observed at 34.5% under the dark environment. However, the removal rate of BA by UV light-assisted TiO/BC significantly increased to 97.6% in 1 h. The results also demonstrated that the removal performance of BA using TiO/BC was 2.1times higher than that of commercial TiO (46.4%). Besides, the removal efficiency of BA by reused TiO/BC after eight cycles slightly decreased by 12.8%, demonstrating the excellent properties of the prepared composite. TiO/BC also exhibited high removal efficiency of BA (over 89%) from the synthetic wastewater sample, indicating the potential utilization of composite for removing BA in wastewater. This work provides a new way to turn biomass waste into useful material and effective method to remove micropollutant BA.

摘要

随着全球工业化进程的加速，有机污染物已对生态安全和人类健康构成威胁。本研究制备了TiO/稻壳生物炭（TiO/BC）用于去除废水中的双酚A（BA）微污染物。实验结果表明，在黑暗环境下，TiO/BC对BA的去除效率较低，为34.5%。然而，紫外光辅助的TiO/BC对BA的去除率在1小时内显著提高到97.6%。结果还表明，使用TiO/BC去除BA的性能比商用TiO（46.4%）高2.1倍。此外，经过八次循环后重复使用的TiO/BC对BA的去除效率略有下降，为12.8%，这表明所制备的复合材料具有优异的性能。TiO/BC对合成废水样品中的BA也表现出较高的去除效率（超过89%），表明该复合材料在去除废水中BA方面具有潜在的应用价值。这项工作为将生物质废物转化为有用材料提供了一种新途径，也为去除微污染物BA提供了有效方法。