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Qiu H, Wang C, Jiang L, Niu H, Wang X, Qin W, Xu F, Hao L. A microbial-driven persulfate activating-cycling system for in-depth oxytetracycline degradation and bacterial antibiotic resistance control. WATER RESEARCH 2025; 275:123151. [PMID: 39904194 DOI: 10.1016/j.watres.2025.123151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2024] [Revised: 12/13/2024] [Accepted: 01/15/2025] [Indexed: 02/06/2025]
Abstract
Insufficient biodegradability of antibiotics (e.g., oxytetracycline, OTC) and the accompanying antibiotic resistance gene (ARG) spreading risk have been a serious concern in wastewater treatment plants. This study developed a microbial-driven persulfate activating-cycling system (MPCS) relying on the iron-reducing capacity of Shewanella oneidensis to sustainably degrade OTC and prevent ARG elevation. In MPCS, a nanosized bio-magnet shell (20-60 nm) was bio-generated and incorporated with S. oneidensis to activate peroxydisulfate and produce free radicals to attack OTC, removed by 98.78 % in 120 min. S. oneidensis metabolism re-generated the bio-magnet and cleared the toxic intermediates. Despite the stress of OTC and free radicals, S. oneidensis sustained (live/death ratio of 74.50 %: 25.50 %) under bio-magnet shell protection, showing a strong energy metabolism and iron-reducing strength. The tight coupling of biodegradation and advanced oxidation process (AOP) greatly improved degrading efficiency (132.65 %-2369.44 % higher than single biodegradation or AOP). MPCS continuously operated 5 cycles efficiently, exhibiting a diverse degrading pathway with less toxic intermediates than the single treatment. Notably, MPCS functioned well without peroxydisulfate, as the S. oneidensis produces low-level hydrogen peroxide as the AOP substrate, achieving favorable OTC elimination. Especially, the expression of sixteen tetracycline-related ARGs dropped by 62.94 %-100 % in MPCS than biodegradation, indicating resistance control advantage under bio-magnet shell protection and the synergism effect of AOP and biodegradation. This study spontaneously recyclably combined biodegradation and AOP to simultaneously eliminate antibiotics and ARGs, which provided a potential approach to control the drug resistance risk.
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Affiliation(s)
- Hang Qiu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China
| | - Can Wang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, China; Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China.
| | - Liyue Jiang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China
| | - Huan Niu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China
| | - Xinyi Wang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China
| | - Wenqiu Qin
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, PR China; Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China
| | - Fei Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, CAS, Guiyang 550081, PR China
| | - Likai Hao
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, CAS, Guiyang 550081, PR China
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Jiang L, Rastgar M, Wang C, Ke S, He L, Chen X, Song Y, He C, Wang J, Sadrzadeh M. Robust PANI-entangled CNTs Electro-responsive membranes for enhanced In-situ generation of H2O2 and effective separation of charged contaminants. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cheng W, Wang P, Zhang Y, Wang H, Ma J, Zhang T. Oxidation resistances of polyamide nanofiltration membranes to hydroxyl and sulfate radicals. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hung CM, Chen CW, Huang CP, Sheu DS, Dong CD. Metal-free catalysis for organic micropollutant degradation in waste activated sludge via poly(3-hydroxybutyrate) biopolymers using Cupriavidus sp. L7L coupled with peroxymonosulfate. BIORESOURCE TECHNOLOGY 2022; 361:127680. [PMID: 35878764 DOI: 10.1016/j.biortech.2022.127680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/18/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
This study employed a novel and environment-friendly biopolymer/oxidant catalytic system, viz., poly(3-hydroxybutyrate)/peroxymonosulfate (PHB/PMS), for pretreating wastewater sludge for the first time. Under optimal conditions, i.e., 3.1 × 10-4 M of PMS and 3.3 g/L of PHB at pH = 6.0, the PAHs in the sludge matrix was decreased by 79 % in 12 h. Increase in salinity (75 % synthetic seawater) achieved 83 % of PAHs degradation. Functional groups (CO) of the biopolymer matrix were active centers for biopolymer-mediated electron transfer that produced reactive oxygen species (SO4-, HO, and 1O2) for adsorption and catalytic oxidation of PAHs in the sludge. Functional metagenomic analysis revealed the main genus, Conexibacter (phylum, Actinobacteria) exhibited PAH-degrading function with high efficiency in the biodegradation of PAHs from sludge pretreated with PHB/PMS. Coupling chemical oxidation and biostimulation using bacterial polymer-based biomaterials is effective and beneficial for pretreating wastewater sludge toward circular bioeconomy.
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Affiliation(s)
- Chang-Mao Hung
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chin-Pao Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark, USA
| | - Der-Shyan Sheu
- Department of Marine Biotechnology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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