Photocatalytic synergistic biofilms enhance tetracycline degradation and conversion  

作　　者：Chuanbao Xiao Jilin Yuan Linyang Li Nianbing Zhong Dengjie Zhong Quanhua Xie Haixing Chang Yunlan Xu Xuefeng He Min Li 

机构地区：[1]Intelligent Fiber Sensing Technology of Chongqing Municipal Engineering Research Center of Institutions of Higher Education,Chongqing Key Laboratory of Modem Photoelectric Detection Technology and Instrument,Chongqing Key Laboratory of Fiber Optic Sensor and Photodetector,Chongqing University of Technology,Chongqing,400054,China [2]School of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing,400054,China

出　　处：《Environmental Science and Ecotechnology》2023年第2期97-105,共9页环境科学与生态技术（英文）

基　　金：supported in part by the National Natural Science Foundation of China(NSFC)(52176178,51876018);Innovation Research Group of Universities in Chongqing(CXQT21035);Scientific and Technological Research Programof Chongqing Municipal Education Commission of China(KJZD-M202201101);Chongqing Postgraduate Innovation Project(CYS22318);Chongqing University of Technology Graduate Education High Quality Development Project(gzlcx20222022).

摘　　要：Tetracyclines are refractory pollutants that cause persistent harm to the environment and human health.Therefore,it is urgently necessary to develop methods to promote the efficient degradation and conversion of tetracyclines in wastewater.This report proposes a photobiocatalytic synergistic system involving the coupling of GeO_(2)/Zn-doped phosphotungstic acid hydrate/TiO_(2)(GeO_(2)/Zn-HPW/TiO_(2))-loaded photocatalytic optical hollow fibers(POHFs)and an algalebacterial biofilm.The GeO_(2)/Zn-HPW/TiO_(2) photocatalyst exhibits a broad absorption edge extending to 1000 nm,as well as high-efficiency photoelectric conversion and electron transfer,which allow the GeO_(2)/Zn-HPW/TiO_(2)-coated POHFs to provide high light intensity to promote biofilm growth.The resulting high photocatalytic activity rapidly and stably reduces the toxicity and increases the biodegradability of tetracycline-containing wastewater.The biofilm enriched with Salinarimonas,Coelastrella sp.,and Rhizobium,maintains its activity for the rapid photocatalytic degradation and biotransformation of intermediates to generate the O_(2) required for photocatalysis.Overall,the synergistic photocatalytic biofilm system developed herein provides an effective and efficient approach for the rapid degradation and conversion of water containing high concentrations of tetracycline.

关 键 词：Optical hollow fiber GeO_(2)/Zn-doped phosphotungstic acid hydrate/TiO_(2) Algalebacterial biofilm SYNERGY TETRACYCLINE 

分 类 号：X703[环境科学与工程—环境工程]