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On-line monitoring of a two-stage anaerobic digestion process using a BOD analyzer

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Author

Summary, in English

A computer-controlled biochemical oxygen demand (BOD) analyzer has been developed for fast estimation of biochemical oxygen demand (BOD,,) automatically with the purpose of on-line monitoring of a process for conversion of biomass under field conditions. The instrument was tested by on-line monitoring of the connecting stream between two stages of a two-stage anaerobic process in laboratory scale. In the first stage, hydrolysis of sugar beet leaves and its conversion into volatile fatty acids and other low molecular weight substrates took place. The effluent from the first reactor was used as a feed stream to the second stage, i.e. an anaerobic contact reactor. The feed stream was sampled intermittently, diluted and analyzed by the BOD analyzer automatically in order to estimate the organic loading rate to the reactor. The results from this study demonstrated that the BOD analyzer could be a stand-alone and promising sensor device for rapid on-line monitoring of easily biodegradable organic substances in biological treatment processes. (C) 2004 Elsevier B.V. All rights reserved.

Publishing year

2004

Language

English

Pages

263-275

Publication/Series

Journal of Biotechnology

Volume

109

Issue

3

Document type

Journal article

Publisher

Elsevier

Topic

  • Other Electrical Engineering, Electronic Engineering, Information Engineering
  • Industrial Biotechnology

Keywords

  • BOD analyzer
  • BODst
  • Monitoring
  • On-line
  • Two-stage
  • Anaerobic digestion

Status

Published

ISBN/ISSN/Other

  • ISSN: 1873-4863