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Toxicity assessment of copper by electrochemically active bacteria in wastewater

  • Lijuan Zhang
  • Sam Fong Yau Li
  • Huchun Tao
Original Paper
  • 50 Downloads

Abstract

A bioelectrochemical sensor (BES) was constructed for toxicity assessment of copper in contaminated domestic sewage. Electrochemically active bacteria (EAB), whose growth was supported by the bioenergy generated from an in situ metallurgical process, functioned as the sensing elements. The external resistance of metallurgical BES was optimized based on linear sweep voltammetry analysis. The stabilized BES was utilized to monitor the copper toxicity in real wastewater. During the less than 1-h sensing period, copper concentration ranging from 1 to 5 mg L−1 could be detected. A power output of around 100 Wh (kg Cu)−1 and metallic copper resource were obtained simultaneously. This study demonstrated that the highly active EAB species enriched in metallurgical BES could be a promising candidate for rapid and reliable evaluation of copper toxicity in real domestic wastewater.

Keywords

Bioelectrochemical sensor Electrochemically active bacteria Copper toxicity Linear sweep voltammetry Domestic wastewater 

Notes

Acknowledgements

This work was supported by the National University of Singapore, National Research Foundation and Economic Development Board (SPORE, COY-15-EWI-RCFSA/N197-1) and Ministry of Education (R-143-000-519-112).

Supplementary material

10653_2018_105_MOESM1_ESM.docx (7.9 mb)
Supplementary material 1 (DOCX 8093 kb)

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Shenzhen Key Laboratory for Heavy Metal Treatment and Reutilization, School of Environment and EnergyPeking University Shenzhen Graduate SchoolShenzhenChina
  2. 2.Department of Chemistry, Faculty of ScienceNational University of SingaporeSingaporeSingapore
  3. 3.NUS Environmental Research Institute, National University of SingaporeSingaporeSingapore

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