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Microbial BOD sensors for wastewater analysis.

Jing Liu1, Bo Mattiasson

  • 1Center for Chemistry and Chemical Engineering, Department of Biotechnology, Lund University, P.O. Box 124, S-221 01 Lund, Sweden. Jing.Liu@biotek.lu.se

Water Research
|October 9, 2002
PubMed
Summary

This review examines biochemical oxygen demand (BOD) biosensors, focusing on biofilm configurations and their performance. Techniques to improve BOD sensor accuracy and stability are discussed, alongside current limitations.

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Area of Science:

  • Environmental Science
  • Biotechnology
  • Analytical Chemistry

Background:

  • Biochemical oxygen demand (BOD) is a critical water quality parameter.
  • Conventional BOD testing (BOD5) is time-consuming and labor-intensive.
  • Biosensors offer a potential alternative for rapid BOD measurement.

Purpose of the Study:

  • To review the current state of biosensors for measuring biochemical oxygen demand (BOD).
  • To critically evaluate the performance characteristics of biofilm-based BOD biosensors.
  • To identify methods for enhancing BOD biosensor accuracy and stability.

Main Methods:

  • Literature review of BOD biosensor research.
  • Analysis of performance metrics including linearity, response time, precision, and stability.

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  • Evaluation of toxic resistance and agreement with conventional BOD5 tests.

    • Main Results:

    • Biofilm-based BOD biosensors show promise but require optimization.
    • Techniques exist to improve sensor agreement with BOD5.
    • Commercial BOD instruments and other measuring principles are also considered.

    Conclusions:

    • BOD biosensor technology has advanced significantly.
    • Further development is needed to overcome limitations in accuracy, stability, and toxic resistance.
    • Biosensors represent a valuable tool for water quality monitoring.