Thermophilic biohydrogen production by an anaerobic heat treated-hot spring culture


KARADAĞ D. , Makinen A., Efimova E., Puhakka J. A.

BIORESOURCE TECHNOLOGY, vol.100, no.23, pp.5790-5795, 2009 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 100 Issue: 23
  • Publication Date: 2009
  • Doi Number: 10.1016/j.biortech.2009.06.035
  • Title of Journal : BIORESOURCE TECHNOLOGY
  • Page Numbers: pp.5790-5795

Abstract

Batch experiments were conducted to investigate the thermophilic biohydrogen production using an enrichment culture from a Turkish hot spring. Following the enrichment, the culture was heat treated at 100 degrees C for 10 min to select for spore-forming bacteria. H-2 production was accompanied by production of acetate, butyrate, lactate and ethanol. H-2 Production was associated by acetate-butyrate type fermentation while accumulation of lactate and ethanol negatively affected the H-2 yield. H-2 production was highest in the temperature range from 49.6 to 54.8 degrees C and optimum values for initial PH and concentral ions of iron, yeast extract and glucose were 6.5, 40 mg/l, 4-13.5 g/l, respectively. PCR-DGGE profiling showed that the heat treated culture consisted of species closely affiliated to genus Thermoonaerobacterium. (C) 2009 Elsevier Ltd. All rights reserved.