Occurrence and removal of antibiotics from aquaculture wastewater by solar-driven Fe(VI)/oxone process

Han Gong; Ruixue Li; Yanqiong Zhang; Lijie Xu; Lu Gan; Luyi Pan; Minxing Liang; Xue Yang; Wei Chu; Yuan Gao; Muting Yan

doi:10.1016/j.chemosphere.2023.139809

Occurrence and removal of antibiotics from aquaculture wastewater by solar-driven Fe(VI)/oxone process

Chemosphere. 2023 Nov:340:139809. doi: 10.1016/j.chemosphere.2023.139809. Epub 2023 Aug 12.

Authors

Han Gong¹, Ruixue Li¹, Yanqiong Zhang¹, Lijie Xu², Lu Gan³, Luyi Pan⁴, Minxing Liang¹, Xue Yang⁵, Wei Chu⁵, Yuan Gao⁶, Muting Yan⁷

Affiliations

¹ Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China.
² College of Biology and the Environment, Nanjing Forestry University, Nanjing, China.
³ College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China.
⁴ Instrumentation Analysis & Research Center, South China Agricultural University, Guangzhou, China.
⁵ Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
⁶ Instrumentation and Service Center for Science and Technology, Beijing Normal University, Zhuhai, China. Electronic address: yuan.gao@bnu.edu.cn.
⁷ Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. Electronic address: marineymt@scau.edu.cn.

PMID: 37579819
DOI: 10.1016/j.chemosphere.2023.139809

Abstract

In this study, the occurrence and removal of ten selected antibiotics from aquaculture wastewater by the process solar + Fe(VI)+oxone were investigated. The detection levels of the antibiotics in the aquaculture wastewater samples were at ng/L. The degradation of the selected antibiotics under the process solar + Fe(VI)+oxone followed pseudo-first-order kinetics. As the most abundant antibiotic in the studied aquaculture wastewater, norfloxacin (NFX) was used as the model compound to study the reaction mechanism and detoxification ability of the treatment system, as well as the effects of reaction parameters and environmental factors. The active species including O₂•^-, O₂¹, and Fe(V)/Fe(IV) contributed to NFX degradation in the process solar + Fe(VI)+oxone. Decarboxylation, the piprazine ring opening, defluorination of the benzene ring, oxygen addition and the cleavage of the quinolone/benzene ring were main degradation pathways of NFX. Around 20% mineralization was reached and the inhibition rate of the bacteria (Escherichia Coli) growth was reduced from 95.5% to 47.1% after the NFX degradation for 60 min. Despite the suppression of NFX degradation by NO₂^-, PO₄^3- and humic acid, the NFX degradation in three aquaculture wastewater samples was faster than that in ultrapure water due to the positive effect of Br-and other factors. The above results demonstrate the treatment process solar-driven Fe(VI)/oxone has a good potential in antibiotics removal from the aquaculture wastewater.

Keywords: Antibiotic; Aquaculture wastewater; Fe(VI); Oxone; Solar light.

MeSH terms

Anti-Bacterial Agents*
Aquaculture / methods
Benzene
Norfloxacin
Oxidation-Reduction
Wastewater
Water Pollutants, Chemical* / analysis

Substances

Anti-Bacterial Agents
Wastewater
potassium peroxymonosulfuric acid
Benzene
Norfloxacin
Water Pollutants, Chemical