A small-scale air-cathode microbial fuel cell for on-line monitoring of water quality.

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  • Additional Information
    • Source:
      Publisher: Elsevier Advanced Technology Country of Publication: England NLM ID: 9001289 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-4235 (Electronic) Linking ISSN: 09565663 NLM ISO Abbreviation: Biosens Bioelectron Subsets: MEDLINE
    • Publication Information:
      Publication: Oxford : Elsevier Advanced Technology
      Original Publication: [Barking, Essex, England] : Elsevier Applied Science, 1989-
    • Subject Terms:
      Bioelectric Energy Sources*; Biosensing Techniques/*methods ; Fresh Water/*analysis ; Water Pollutants, Chemical/*analysis; Air ; Cadmium/analysis ; Electrodes ; Equipment Design ; Limit of Detection ; Online Systems ; Printing, Three-Dimensional ; Water Quality
    • Abstract:
      The heavy use of chemicals for agricultural, industrial and domestic purposes has increased the risk of freshwater contamination worldwide. Consequently, the demand for efficient new analytical tools for on-line and on-site water quality monitoring has become particularly urgent. In this study, a small-scale single chamber air-cathode microbial fuel cell (SCMFC), fabricated by rapid prototyping layer-by-layer 3D printing, was tested as a biosensor for continuous water quality monitoring. When acetate was fed as the rate-limiting substrate, the SCMFC acted as a sensor for chemical oxygen demand (COD) in water. The linear detection range was 3-164 ppm, with a sensitivity of 0.05 μA mM(-1) cm(-2) with respect to the anode total surface area. The response time was as fast as 2.8 min. At saturating acetate concentrations (COD>164 ppm), the miniature SCMFC could rapidly detect the presence of cadmium in water with high sensitivity (0.2 μg l(-1) cm(-2)) and a lower detection limit of only 1 μg l(-1). The biosensor dynamic range was 1-25 μg l(-1). Within this range of concentrations, cadmium affected only temporarily the electroactive biofilm at the anode. When the SCMFCs were again fed with fresh wastewater and no pollutant, the initial steady-state current was recovered within 12 min.
      (Copyright © 2014. Published by Elsevier B.V.)
    • Contributed Indexing:
      Keywords: BOD; Biosensor; Cadmium; Microbial fuel cell; Water quality
    • Accession Number:
      0 (Water Pollutants, Chemical)
      00BH33GNGH (Cadmium)
    • Publication Date:
      Date Created: 20140710 Date Completed: 20150916 Latest Revision: 20140725
    • Publication Date:
      20240513
    • Accession Number:
      10.1016/j.bios.2014.06.050
    • Accession Number:
      25005554