Reutilize tire in microbial fuel cell for enhancing the nitrogen removal of the anammox process coupled with iron-carbon micro-electrolysis  

作　　者：Fei Xie Bowei Zhao Ying Cui Xiao Ma Xiao Zhang Xiuping Yue 

机构地区：[1]College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China

出　　处：《Frontiers of Environmental Science & Engineering》2021年第6期319-330,共12页环境科学与工程前沿（英文）

基　　金：supported by the Scientific and Technological Project of Shanxi Province(Nos.201903D321057 and 201903D321055);by the National Natural Science Foundation of China(Grant Nos.51708386 and 21501129);by the China Postdoctoral Science Foundation(No.2016M601290);the Ministry of Environmental Protection of China(Major Science and Technology Program,Nos.2019YFC0408601 and 2019YFC0408602)。

摘　　要：In this study,microbial fuel cells(MFCs)were explored to promote the nitrogen removal performance of combined anaerobic ammonium oxidation(anammox)and Fe-C micro-electrolysis(CAE)systems.The average total nitrogen(TN)removal efficiency of the modified MFC system was 85.00%,while that of the anammox system was 62.16%.Additionally,the effective operation time of this system increased from six(CAE system alone)to over 50 days,significantly promoting TN removal.The enhanced performance could be attributed to the electron transferred from the anode to the cathode,which aided in reducing nitrate/nitrite in denitrification.The H+released through the proton exchange membrane caused a decrease in the pH,facilitating Fe corrosion.The pyrolyzed waste tire used as the cathode could immobilize microorganisms,enhance electron transport,and produce a natural Fe-C micro-electrolysis system.According to the microbial community analysis,Candidatus kuenenia was the major genus involved in the anammox process.Furthermore,the SM1A02 genus exhibited the highest abundance and was enriched the fastest,and could be a novel potential strain that aids the anammox process.

关 键 词：Waste tire MFCs MICRO-ELECTROLYSIS ANAMMOX Feammox 

分 类 号：X783.3[环境科学与工程—环境工程]