Efficient Chemical-Free Degradation of Waterborne Micropollutants with an Immobilized Dual-Porous TiO 2 Photocatalyst.

Autor: Willis DE; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Sheets EC; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Worbington MR; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Kamat M; Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Glass SK; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Caso MJ; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Ofoegbuna T; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Diaz LM; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Osei-Appau C; Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., Snow SD; Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States., McPeak KM; Gordon and Mary Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States.
Jazyk: angličtina
Zdroj: ACS ES&T engineering [ACS ES T Eng] 2023 Aug 03; Vol. 3 (11), pp. 1694-1705. Date of Electronic Publication: 2023 Aug 03 (Print Publication: 2023).
DOI: 10.1021/acsestengg.3c00191
Abstrakt: Photocatalytic advanced oxidation processes (AOPs) promise a chemical-free route to energy-efficient degradation of waterborne micropollutants if long-standing mass transfer and light management issues can be overcome. Herein, we developed a dual-porous photocatalytic system consisting of a mesoporous (i.e., 2-50 nm pores) TiO 2 (P25) photocatalyst supported on macroporous (i.e., >50 nm pores) fused quartz fibers (P25/QF). Our reusable photocatalytic AOP reduces chemical consumption and exhibits excellent energy efficiency, demonstrated by degrading various pharmaceutical compounds (acetaminophen, sulfamethoxazole, and carbamazepine) in natural waters with electrical energy per order (E EO ) values of 4.07, 0.96, and 1.35 kWh/m 3 , respectively. Compared to the conventional H 2 O 2 /UVC AOP, our photocatalytic AOP can treat water without chemical additives while reducing energy consumption by over 2800%. We examine these improvements based on mass transport and optical (UVA and UVC) transmittance and demonstrate that the enhancements scale with increasing flow rate.
Competing Interests: The authors declare no competing financial interest.
(© 2023 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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