Effects of the redox potential of the acidogenic reactor on the performance of a two-stage methanogenic reactor

Chae Gun Phae, Wan Kyu Lee, Byung Hong Kim, Jong Ho Koh, Sang Won Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Distillery wastewater was used in a thermophilic laboratory-scale two stage anaerobic digester to test the effects of the redox potential of the first acidogenic reactor on the performance of the system. The digester consisted of first a acidogenic reactor and the an upflow anaerobic sludge blanket (UASB) reactor. The digestor was operated at a hydraulic retention time (HRT) of 48 h. Under these conditions, about 90% of the chemical oxygen demand as measured by the chromate method (CODCT) was removed with a gas production yield of 0.4 l/g-COD removed. The redox potential of the acidogenic reactor was increased when the reactor was purged with nitrogen gas or agitation speed was increased. The increase in reduction potential was accompanied by an increase in acetate production and a decrease in butyrate formation. A similar trend was observed when a small amount of air was introduced into the acidogenic reactor. It is believed that the hydrogen partial pressure in the acidogenic reactor was decreased by the above mentioned treatments. The possible failure of anaerobic digestion processes due to over-loading could be avoided by the above mentioned treatments.

Original languageEnglish
Pages (from-to)30-35
Number of pages6
JournalJournal of Microbiology and Biotechnology
Volume6
Issue number1
Publication statusPublished - Feb 1996
Externally publishedYes

Fingerprint

Oxidation-Reduction
Gases
Distilleries
Chromates
Biological Oxygen Demand Analysis
Anaerobic digestion
Butyrates
Partial Pressure
Chemical oxygen demand
Waste Water
Sewage
Partial pressure
Digestion
Hydrogen
Acetates
Wastewater
Nitrogen
Air
Hydraulics

Keywords

  • Acetogenesis
  • Distillery
  • Electron metabolism
  • Methanogenesis
  • UASE
  • Wastewater two-stage reactor

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology
  • Microbiology

Cite this

Effects of the redox potential of the acidogenic reactor on the performance of a two-stage methanogenic reactor. / Phae, Chae Gun; Lee, Wan Kyu; Kim, Byung Hong; Koh, Jong Ho; Kim, Sang Won.

In: Journal of Microbiology and Biotechnology, Vol. 6, No. 1, 02.1996, p. 30-35.

Research output: Contribution to journalArticle

Phae, Chae Gun ; Lee, Wan Kyu ; Kim, Byung Hong ; Koh, Jong Ho ; Kim, Sang Won. / Effects of the redox potential of the acidogenic reactor on the performance of a two-stage methanogenic reactor. In: Journal of Microbiology and Biotechnology. 1996 ; Vol. 6, No. 1. pp. 30-35.
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