Sensor systems for bacterial reactors: A new flavin-phenol composite film for the in situ voltammetric measurement of pH

Charnete Casimero, Aaron McConville, John-Joe Fearon, Clare Lawrence, Charlotte Taylor, Robert Smith, J Davis

Research output: Contribution to journalArticle

9 Citations (Scopus)
47 Downloads (Pure)

Abstract

Monitoring pH within microbial reactors has become an important requirement across a host of applications ranging from the production of functional foods (probiotics) to biofuel cell systems. An inexpensive and scalable composite sensor capable of monitoring the pH within the demanding environments posed by microbial reactors has been developed. A custom designed flavin derivative bearing an electropolymerisable phenol monomer was used to create a redox film sensitive to pH but free from the interferences that can impede conventional pH systems. The film was integrated within a composite carbon-fibre-polymer laminate and was shown to exhibit Nernstian behaviour (55 mV/pH) with minimal drift and robust enough to operate within batch reactors.
Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalAnalytica Chimica Acta
Volume1027
Early online date23 Apr 2018
DOIs
Publication statusPublished - 16 Oct 2018

Keywords

  • Electrode
  • Flavin
  • Sensor
  • bioreactor
  • pH
  • Carbon Fibre

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