Microbial analysis of a phototrophic sludge producing hydrogen from acidified wastewater

  • Zhang, Tong
  • Liu, Hong
  • Fang, Herbert H.P.

  • 1Centre for Environmental Engineering Research, Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.

e-mail: [email protected]

Biotechnology Letters 24(21):p 1833-1837, November 1, 2002. | DOI: 10.1023/A:1020650313396

Abstract

Based on DNA-cloning analysis, the microbial community of a phototrophic sludge producing H2 from an acidified wastewater was composed of 81% of a species resembling Rhodobacter capsulatus (with 99.2% similarity) and two unidentified species of the Bacillus/Clostridium group. The sludge produced a biogas comprising 82 ± 2% H2, 13 ± 2% CO2, 4.5 ± 0.5% N2, and 0.5 ± 0.2% H2S.

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