土木与环境工程学报（中英文）2024，Vol.46Issue(6)：221-230,10.DOI:10.11835/j.issn.2096-6717.2023.110
正阳极电位下基于海洋微生物电解池的高性能生物传感器及其生物膜特性
The biofilm characteristics and enhanced performance of a marine microbial-electrolysis-cell-based biosensor under positive anodic potential
摘要
Abstract
Microbial fuel cells have already been used as biosensors to monitor assimilable organic carbon(AOC).However,their signal production from AOC is known to be completely suppressed by dissoved oxygen(DO).In this study,two identical microbial electrolysis cell(MEC)based biosensors were inoculated with marine sediment and operated at two different anodic potentials,namely-300 mV and+250 mV relative to Ag/AgCl.The MEC biosensor operated under positive anodic potential conditions had electrochemically active microbial communities on the anode,including members of the Shewanellaceae,Pseudoalteromonadaceae,and Clostridiaceae families.However,the strictly anaerobic members of the Desulfuromonadaceae,Desulfobulbaceae and Desulfobacteraceae families were found only in the negative anodic potential MEC biosensor.The positive anodic potential MEC biosensor showed several other advantages as well,such as faster start-up,significantly higher maximum current production,fivefold improvement in the AOC detection limit,and tolerance of low dissolved oxygen,compared to those obtained from the negative anodic potential MEC biosensor.The developed positive anodic potential MEC biosensor can thus be used as a real-time and inexpensive detector of AOC concentrations in high saline and low DO seawater.关键词
生物传感器/微生物燃料电池/阳极电位/海洋生物膜/可同化有机碳Key words
biosensor/microbial fuel cell/anodic potential/marine biofilm/assimilable organic carbon分类
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曹媛媛,张超群,刘想,成亮,杨阳..正阳极电位下基于海洋微生物电解池的高性能生物传感器及其生物膜特性[J].土木与环境工程学报（中英文）,2024,46(6):221-230,10.基金项目
Zhenjiang City Key R&D Plan Modern Agriculture Project(No.SH2021017) （No.SH2021017）
Zhenjiang"Jinshan Talents"Project 2021 （）
Jiangsu Province"Six Talent Peak"Program(No.XCL-111) （No.XCL-111）
