An electroactive biofilm-based biosensor for water safety: Pollutants detection and early-warning

Xiang Qi; Shuyi Wang; Tian Li; Xin Wang; Yong Jiang; Yuexi Zhou; Xiaohong Zhou; Xia Huang; Peng Liang

doi:10.1016/j.bios.2020.112822

An electroactive biofilm-based biosensor for water safety: Pollutants detection and early-warning

Biosens Bioelectron. 2021 Feb 1:173:112822. doi: 10.1016/j.bios.2020.112822. Epub 2020 Nov 17.

Authors

Xiang Qi¹, Shuyi Wang¹, Tian Li², Xin Wang³, Yong Jiang⁴, Yuexi Zhou⁵, Xiaohong Zhou¹, Xia Huang¹, Peng Liang⁶

Affiliations

¹ State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China.
² MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China.
³ MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin, 300350, China. Electronic address: xinwang1@nankai.edu.cn.
⁴ Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China.
⁵ State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
⁶ State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China. Electronic address: liangpeng@tsinghua.edu.cn.

PMID: 33221512
DOI: 10.1016/j.bios.2020.112822

Abstract

Besides serving in wastewater treatment and energy generation fields, electroactive biofilm (EAB) has been employed as a sensitive bio-elements in a biosensor to monitor water quality by delivering electrical signals without additional mediators. Increasing studies have applied EAB-based biosensor in specific pollutant detection, typically biochemical oxygen demand (BOD) detection, as well as in early-warning of composite pollutants. Based on a comprehensive review of literatures, this study reveals how EAB outputs electrical signal, how we can evaluate and improve this performance, and what information we can expect from EAB-based biosensor. Since BOD detection and early-warning are normally confusing, this study manages to differentiate these two applications through distinguished purposes and metrics. Based on the introductions of progresses and applications of EAB-based biosensors so far, several novel strategies toward the future development of EAB-based biosensors are proposed.

Keywords: BOD detection; Comprehensive biosensor; Early-warning; Electroactive biofilm; Water quality.

Publication types

Review