微生物燃料电池处理甲基吡啶废水的性能及机理  

Performance and mechanism of methylpyridine wastewater treatment by a microbial fuel cell

作　　者：朱春申 王自如 徐欣 胡俊 ZHU Chunshen;WANG Ziru;XU Xin;HU Jun(Hangzhou Energy&Environmental Engineering Co.,Ltd.,Hangzhou 311199,China;College of Environment,Zhejiang University of Technology,Hangzhou 310014,China;Eco-Industrial Innovation Institute ZJUT,Quzhou 324400,China)

机构地区：[1]杭州能源环境工程有限公司,浙江杭州311199 [2]浙江工业大学环境学院,浙江杭州310014 [3]衢州市浙工大生态工业创新研究院,浙江衢州324400

出　　处：《化工环保》2025年第1期53-61,共9页Environmental Protection of Chemical Industry

基　　金：浙江省自然科学基金项目(LGF22E080027);衢州市科技计划项目碳达峰碳中和专项(2023K052)。

摘　　要：选择3-甲基吡啶(3-MP)为模型污染物,构建了双室MFC,研究了其对含吡啶类污染物废水的处理性能及机理。经3-MP驯化后MFC阳极生物膜厚度达40μm,红假单胞菌属、戈登式菌属、水杆菌属、德沃斯氏菌属、金黄杆菌属、微杆菌属、细粒菌属、慢生根瘤菌属、申氏杆菌属、湖沉积杆菌属、假诺卡氏菌属等功能菌显著增加。MFC在64 h内可完全降解120 mg/L 3-MP。当3-MP质量浓度为30 mg/L时,48 h后C元素矿化率达69.4%,N元素主要转化为NH4+和NO3–。采用Haldane模型进行3-MP降解动力学分析,最大降解速率、半饱和常数、抑制常数、最大比降解速率分别为3.5 mg/(L·h)、59.9 mg/L、201.0 mg/L和0.58 mg/(L·h·cm^(2))。通过中间产物分析推测3-MP主要通过两条途径降解,一是吡啶环上甲基的氧化,二是中间体1,4-二氢-3-甲基吡啶的双键裂解。3-Methylpyridine(3-MP)was chosen as the model pollutant and a two-compartment microbial fuel cell(MFC)was constructed to study its performance and mechanism of treating wastewater containing pyridine pollutants.After 3-MPacclimatization,the MFC anode biofilm thickness reached 40μm,in which functional bacteria including Rhodopseudomona,Chryseobacterium,Undibacterium,Devosia,Gordonia,Truepera,Lentimicrobium,Bradyrhizobium,Limnobacter,Shinella,and Pseudonocardia increased notably.Within 64 h of reaction,120 mg/L3-MP can be completely degraded in the MFC.Under the 3-MP mass concentration of 30 mg/L,the mineralization rate of the C element was 69.4%,and the N element was mainly converted into NH4+and NO3‒.By employing the Haldane model for 3-MP kinetic analysis,the maximum degradation rate,semi-saturation constant,inhibition constant,and maximum specific degradation rate were fitted to be 3.5 mg/(L·h),59.9 mg/L,201.0 mg/L,and 0.58 mg/(L·h·cm^(2))respectively.Based on the intermediate product analysis,it was inferred that 3-MP was mainly degraded via two pathways,including the oxidation of methyl groups on the pyridine rings,and double bond breakage of 1,4-dihydro-3-methylpyridine.

关 键 词：微生物燃料电池 3-甲基吡啶 微生物群落 动力学分析 降解途径 

分 类 号：X703[环境科学与工程—环境工程]