Sulfadiazine Elimination from Wastewater Effluents under Ozone-Based Catalysis Processes

Ruixue Li; Yanqiong Zhang; Fengru Lu; Feng Li; Lijie Xu; Lu Gan; Chao Cui; Xuesong Li; Qiutong Jin; Wei Chu; Muting Yan; Han Gong

doi:10.3390/catal13071076

Catalysts (Jul 2023)

Sulfadiazine Elimination from Wastewater Effluents under Ozone-Based Catalysis Processes

Ruixue Li,
Yanqiong Zhang,
Fengru Lu,
Feng Li,
Lijie Xu,
Lu Gan,
Chao Cui,
Xuesong Li,
Qiutong Jin,
Wei Chu,
Muting Yan,
Han Gong

Affiliations

Ruixue Li: Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Yanqiong Zhang: Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Fengru Lu: Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Feng Li: Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Lijie Xu: College of Biology and the Environment, Nanjing Forestry University, Nanjing 210000, China
Lu Gan: College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210000, China
Chao Cui: Bureau of Agriculture and Rural Affairs of Pingyi County, Linyi 510000, China
Xuesong Li: Bureau of Agriculture and Rural Affairs of Pingyi County, Linyi 510000, China
Qiutong Jin: Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
Wei Chu: Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China
Muting Yan: Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
Han Gong: Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China

DOI: https://doi.org/10.3390/catal13071076
Journal volume & issue: Vol. 13, no. 7
p. 1076

Abstract

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The presence of antibiotic sulfadiazine (SFD) poses threats to the ecosystem and human health, and traditional wastewater treatment processes are not ideal for sulfadiazine removal. Therefore, it is urgent to develop treatment processes with high efficiency targeting sulfadiazine. This study investigated the degradation and mineralization mechanisms of SFD by ozone-based catalysis processes including ozone/persulfate (PS) and ozone/peroxymonosulfate (PMS). The degradation, mineralization and byproducts of SFD were monitored by HPLC, TOC and LC/MS, respectively. SFD was efficiently removed by two ozone-based catalysis processes. Ozone/PMS showed high efficiency for SFD removal of 97.5% after treatment for 1 min and TOC reduction of 29.4% after treatment for 20 min from wastewater effluents. SFD degradation was affected by pH, oxidant dosage, SFD concentration and anions. In the two ozone-based catalysis processes, hydroxyl radicals (OH•) and sulfate radicals (SO4•−) contributed to the degradation of SFD. The degradation pathways of SFD under the two processes included hydroxylation, the opening of the pyrimidine ring and SO2 extrusion. The results of this study demonstrate that the two ozone-based catalysis processes have good potential for the elimination of antibiotics from water/wastewater effluents.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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