A novel microbial - Bioelectrochemical sensor for the detection of n-cyclohexyl-2-pyrrolidone in wastewater

Palanisamy Kannan, Prasanna Jogdeo, Abeed Fatima Mohidin, Pui Yi Yung, Carlo Santoro, Thomas Seviour, Jamie Hinks, Federico M. Lauro, Enrico Marsili

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We report the detection of volatile organic compound 1-cyclohexyl-2-pyrrolidone (CHP), in a bioelectrochemical system inoculated with Escherichia coli and supplemented with redox mediator 2-hydroxy-1,4-naphthoquinone (2-HNQ), using a functionalized carbon nanotube-coated screen-printed electrode (CNT-SPE) modified with –COOH and -NH2 functional groups. Addition of CHP decreased current output of the bioelectrochemical system, thus enabling rapid detection of CHP concentration. Under optimal conditions, the H2N-CNT-SPE was the best performing and a limit of detection (LOD) of 0.4 mg L−1 was achieved. The proposed sensor showed low interference from other inorganic and organic components. These results outline a viable strategy for detecting organic contaminants in environmental monitoring applications.

Original languageEnglish
Pages (from-to)604-611
Number of pages8
JournalElectrochimica Acta
Volume317
DOIs
Publication statusPublished - Sep 10 2019

Keywords

  • Bioelectrochemical systems
  • Carbon nanotubes
  • Escherichia coli
  • Screen printed electrodes
  • Volatile organic compounds

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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