第40 卷第 10 期
2020 年10 月
环 境 科 学 学 报
Acta Scientiae Circumstantiae
Vol.40,No.10
Oct.,2020
收稿日期:2020-09-07 修回日期:2020-09-25 录用日期:2020-09-25
基金项目:国家自然科学基金(No. 51178140) ; 城市水资源与环境项目(No. 2013DX01)
作者简介:王欣宇(1978—) ,
女,E-mail:86384206@ qq.com;*责任作者,E-mail:rnq@ hit.edu.cn
DOI:10.13671 / j.hjkxxb.2020.0419
王欣宇,
邢德峰,
任南琪.2020.碳源对生物阴极降解对硝基苯酚效能及生物阴极群落结构分析
[J].环境科学学报,40(10) : 3703-3709
Wang X Y,Xing D F,Ren N Q. 2020.Effect of carbon source on PNP degradation and biocathode community structure in bioelectrochemical system[J].
Acta Scientiae Circumstantiae,40(10) : 3703-3709
碳源对生物阴极降解对硝基苯酚效能及生物阴极群
落结构分析
王欣宇,
邢德峰,
任南琪*
城市水资源与水环境国家重点实验室,哈尔滨工业大学,哈尔滨 150090
摘要:研究不同碳源类型对双室生物电化学反应器(biocathode bioelectrochemical system,BES)生物阴极(biocathode)降解对硝基苯酚
(p-nitrophenol,PNP)效能的影响.以碳酸氢钠和葡萄糖作为碳源,
研究不同碳源类型下 BES 反应器效能和生物阴极的微生物群落结构.BES 反
应器效能和 PNP 去除率受到碳源类型的影响,
以葡萄糖作为碳源时 PNP 去除率比碳酸氢钠为碳源的去除率在 12 h 和24 h 分别提高了约 3倍
和1倍.RNaHCO3和RGlucose 的PNP 去除速率常数随碳源转换分别从(0.022±0.002)h-1和(0.059±0.009)h-1减小到(0.018±0.001)h-1和(0.042±
0.002)h-1,PNP 去除率分别下降了 36%和6.9%.RNaHCO3和RGlucose 的PNP 降解速率常数在外加电压由 0.5 V 转换为 0 V 时分别下降到(0.004±
0.00061)h-1和(0.007±0.0006)h-1,
再次转换为 0.5 V 时PNP 降解速率常数升高到(0.022±0.002)h-1和(0.062±0.004)h-1.454-
焦磷酸测序
结果表明碳源类型导致阴极微生物群落结构的显著差异.以碳酸氢钠为碳源的生物阴极富集 Proteobacteria,
而以葡萄糖为碳源的生物阴极
Firmicutes 和Bacteroidetes 成为优势菌门.
关键词:生物电化学系统;碳源;生物阴极微生物群落结构;对硝基苯酚降解
文章编号:0253-2468(2020)10-3703-07 中图分类号:X172 文献标识码:A
Effect of carbon source on PNP degradation and biocathode community
structure in bioelectrochemical system
WANG Xinyu,XING Defeng,REN Nanqi*
State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,Harbin 150090
Abstract:In order to determine the effect of carbon source on the PNP degradation efficiency and microbial community structure of biocathode,the
sodium bicarbonate and glucose were used as carbon source in the double chamber bioelectrochemical system (BES). The results showed that the carbon
source altered the performance of reactors and PNP degradation. The PNP degradation efficiency used glucose were 3 times and 1 times higher than used
sodium bicarbonate at 12 h and 24 h,respectively. The PNP removal rate constant of RNaHCO3和RGlucose reduced from (0.022±0.002)h-1and (0.059±
0.009)h-1to (0. 018 ± 0. 001)h-1and (0. 042 ± 0. 002)h-1and PNP removal rate decreased 36% and 6. 9% with carbon switchover. The PNP
degradation rate constant of RNaHCO3and RGlucose decreased to (0.004±0.00061)h-1and (0.007±0.0006)h-1respectively when the applied voltage was
converted from 0.5 V to 0 V,and the PNP degradation rate constant increased to (0.022±0.002)h-1and (0.062±0.004)h-1when the applied voltage
was converted to 0.5 V again. Microbial community structures of biocathode were significantly different with different carbon source. Proteobacteria was the
dominant bacteria in the sodium bicarbonate reactors,Firmicutes and Bacteroidetes were the predominant bacteria in the glucose reactors. This study
showed the base technology of PNP degradation in the future.
Keywords:bioelectrochemical system(BES) ; carbon source;biocathode microbial community structure;p-nitrophenol degradation
1引言(Introduction)
对硝基苯酚(p-nitrophenol,PNP)作为重要的工
业品或原材料,
广泛的应用于各种合成工业,
同时
也可以由杀虫剂降解产生,
因此被美国环保属
(EPA )列 为 控 制 优 先 污 染 物 名 单 (Wu et al.,
2015).因其在环境中难以被降解,
因而对人类的健
康存在巨大的危害(Tao et al.,2013).近几年来,
在