Natural bio-photosensitizers in sludge: Extracellular polymeric substances (EPS)-driven persulfate activation for sustainable antibiotic degradation
文献类型： 外文期刊
作者： He, Yiyang 1 ; Zhang, Hanlin 2 ; Zhang, Xinchao 1 ; Pei, Yuanyuan 1 ; Wang, Xin 1 ; Cao, Xiao 1 ; Yuan, Haiping 3 ; Xiong, Xi 4 ; Gu, Lin 1 ; Yang, Songrui 1 ;
作者机构： 1.Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
2.Shanghai Acad Agr Sci, Ecoenvironm Protect Inst, Shanghai 201403, Peoples R China
3.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
4.Kanazawa Univ, Inst Sci & Engn, Fac Geosci & Civil Engn, Kanazawa 9201192, Japan
关键词： Extracellular polymeric substances; Antibiotic; Photochemistry; Electron transfer; Molecular structure
期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：10.0； 五年影响因子：10.7 ）
ISSN： 0959-6526
年卷期： 2025 年 519 卷
页码：
收录情况： SCI
摘要： In wastewater treatment plants, antibiotic accumulation in activated sludge hinders sustainable water remediation and resource recovery. To address this, we developed a sludge-derived extracellular polymeric substances (EPS)-based photosensitization strategy for peroxydisulfate (PDS) activation, leveraging EPS's inherent photochemical properties to enhance antibiotic degradation. We examined three EPS fractions (S-EPS, LB-EPS, TB-EPS) using molecular spectroscopy, electrochemical methods, and time-dependent density functional theory computations. S-EPS, rich in fulvic acid-like substances, exhibited superior PDS activation due to its elevated aromaticity, unsaturation, and lignin/CRAM content, which enhanced It-conjugation and electron transfer. Electrochemical experiments confirmed that 3EPS* activated PDS via electron transfer, with phenolic and quinone groups playing key roles. Scavenging experiments revealed the generation of & sdot;OH, SO4 & sdot;-, O2 & sdot;-, and 1O2, with 1O2 dominating tetracycline (TC) degradation. This study advances EPS-mediated photochemical processes and provides a green, sustainable pathway for transforming waste sludge into functional materials. By eliminating synthetic catalysts and harnessing solar energy, this approach aligns with cleaner production and circular bioeconomy principles, offering a scalable solution for low-carbon wastewater treatment.
- 相关文献
作者其他论文 更多>>
-
Bacillus velezensis SS-20 as a potential and efficient multifunctional agent in biocontrol, saline-alkaline tolerance, and plant-growth promotion
作者：Chen, Zhaoliang;Zhang, Haiyun;Lv, Weiguang;Zhang, Siyi;Li, Shuangxi;Zhang, Hanlin;Zheng, Xianqing;Zhang, Juanqin;Bai, Naling;Du, Linna;Li, Shuangxi;Zhang, Hanlin;Zheng, Xianqing;Zhang, Juanqin;Bai, Naling;Li, Shuangxi;Zhang, Hanlin;Zheng, Xianqing;Zhang, Juanqin;Bai, Naling;Zhang, Tinglin
关键词：Bacillus velezensis; Antagonistic activity; Saline-alkaline tolerance; Growth promotion; Whole-genome sequencing
-
The synergistic role of sludge conditioner FeCl3/Rice husk on co-combustion with coal gangue: Thermaldynamic behavior, gases pollutants control and bottom ash stabilization
作者：Li, Jixin;He, Yiyang;Wang, Xin;Cao, Xiao;Yang, Haiyan;Chen, Lu;Xu, Suyun;Wen, Haifeng;Gu, Lin;Zhang, Hanlin
关键词：Coal gangue; Dewatered sludge; Co-combustion; TG-FTIR; Kinetics
-
Nitrogen Fertilizer Reduction in Rice-Eel Co-Culture System Improves the Soil Microbial Diversity and Its Functional Stability
作者：Ma, Mengqian;Lv, Weiguang;Huang, Yu;Zhang, Juanqin;Li, Shuangxi;Bai, Naling;Zhang, Haiyun;Zhu, Xianpu;Xu, Chenglong;Zhang, Hanlin;Lv, Weiguang;Zhang, Juanqin;Li, Shuangxi;Bai, Naling;Zhang, Haiyun;Zhu, Xianpu;Xu, Chenglong;Zhang, Hanlin;Lv, Weiguang;Zhang, Juanqin;Li, Shuangxi;Bai, Naling;Zhang, Haiyun;Zhang, Hanlin;Zhu, Xianpu;Xu, Chenglong;Zhang, Hanlin
关键词：paddy soil; rice-eel co-culture system; soil bacterial community; earthworms
-
Thermal hydrolysis-induced molecular transformations in sludge: Implications for photochemical reactivity and dissolved antibiotics photodissipation
作者：Wen, Haifeng;Wang, Xin;Zhang, Xinchao;He, Yiyang;Gu, Lin;Zhang, Hanlin;Wu, Peize
关键词：Sludge thermal hydrolysis; Dissolved organic matter; Photodegradation; Reactive oxygen species; Electron transfer capacity
-
Stratified EPS from sewage sludge as a multifunctional modulator for FeCN photocatalyst: Interfacial engineering and enhanced norfloxacin degradation
作者：Cao, Xiao;Zhang, Xinchao;He, Yiyang;Xu, Suyun;Gu, Lin;Zhang, Hanlin;Yuan, Haiping
关键词：Photocatalysis; Antibiotic degradation; Extracellular polymeric substances (EPS); FeCN@SEPS; Norfloxacin
-
Tailoring peroxyacetic acid (PAA) activation by sewage sludge derived atomic-Fe clusters/Fe-N4 catalyst via thermally driven spin manipulation
作者：Gu, Lin;Cao, Xiao;Yang, Haiyan;He, Yiyang;Wang, Xin;Wen, Haifeng;Xu, Suyun;Hu, Ke;Zhang, Hanlin;Gu, Lin;Yuan, Haiping
关键词：Sewage sludge; Fe single-atom catalyst; Fe nanoclusters; Peracetic acid activation; Singlet oxygen
-
Efficient biodegradation of enrofloxacin by Citrobacter sp. SAASenr-X1: Characteristics, performance, pathways, risk assessment, and practical applications
作者：Xu, Chenglong;Zhu, Xianpu;Li, Shuangxi;Bai, Naling;Zhang, Juanqin;Zhang, Hanlin;Lv, Weiguang;Li, Yunhao;Lu, Jialei;Xu, Chenglong;Li, Shuangxi;Zhang, Hanlin;Lv, Weiguang;Xu, Chenglong;Li, Shuangxi;Zhang, Hanlin;Lv, Weiguang
关键词：Enrofloxacin biotransformation; Citrobacter sp. SAASenr-X1; Degradation pathways; Ecological safety; Practical applications
