环境工程学报2025，Vol.19Issue(11)：2744-2754,11.DOI:10.12030/j.cjee.202504118
基于异养硝化—好氧反硝化菌的生物杂化阴极处理高盐富铵废水脱氮产电性能
Nitrogen removal and electricity generation performance of heterotrophic nitrifying-aerobic denitrifying-based biohybrid cathode for treating high-salinity ammonium-rich wastewater
摘要
Abstract
A single-chamber microbial fuel cell(SMFC)with a biohybrid cathode constructed using heterotrophic nitrifying-aerobic denitrifying bacteria(HNADB)was developed for resource recovery from high-salinity ammonium-rich wastewater.Results demonstrated that inoculum characteristics critically influenced the SMFC's pollutant removal performance.The HNADB-biohybrid cathode group achieved 21.0%and 80.6%higher NH4+-N and total nitrogen removal efficiencies compared to autotrophic nitrifying bacteria(ANB)-biohybrid and platinum/carbon(Pt/C)chemical cathode groups,respectively.Negligible NO3--N/NO2--N accumulation during operation confirmed simultaneous nitrification-denitrification.While power generation showed no significant difference between HNADB and ANB biohybrid cathodes(P>0.05),the HNADB group exhibited 27.3%,4.1%,and 31.3%lower maximum power density,open-circuit voltage,and Coulombic efficiency versus Pt/C controls.Microbial analysis revealed electroactive HNADB dominated the HNADB-biohybrid cathode(26.2%relative abundance),whereas the ANB-biohybrid formed a mixed community with only 13.9%electroactive HNADB.This explains their divergent nitrogen removal efficiencies and confirms electrical stimulation selectively enriches electroactive HNADB,though inoculation sources modulate this enrichment.The HNADB-based biohybrid electrode demonstrates superior nitrogen removal in saline ammonium wastewater,advancing industrial wastewater recycling technologies.关键词
异养硝化—好氧反硝化/生物杂化电极/高盐富铵废水/脱氮/微生物群落结构Key words
heterotrophic nitrification-aerobic denitrification/biohybrid electrode/high-salinity ammonium-rich wastewater/nitrogen removal/microbial community structure分类
资源环境引用本文复制引用
张林防,张玉浩,徐一申,黄晓丹,冯厚翔,付国楷,张智..基于异养硝化—好氧反硝化菌的生物杂化阴极处理高盐富铵废水脱氮产电性能[J].环境工程学报,2025,19(11):2744-2754,11.基金项目
国家自然科学基金青年基金资助项目(52400085) （52400085）
江苏省自然科学基金青年基金资助项目(BK20220432) （BK20220432）
江苏省高等学校自然科学研究项目(21KJB560020) （21KJB560020）
