Kinetics of hydrogen production from condensed molasses fermentation solubles using sewage sludge in a continuous stirred tank reactor

Chin Chao Chen, Jou Hsien Wu, Chyi How Lay, Biswarup Sen, Jo Shu Chang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The hydrogen production process from condensed molasses fermentation solubles (CMS) in a continuous stirred tank reactor using both experimental and modeling approaches were evaluated. Seeded sludge was acclimated to enhance H2 production and operation strategies were developed. Kinetic models were derived to explain and predict the kinetic properties of the hydrogen and metabolite production. The maximum specific growth rate, Monod constant and yield coefficient for cell growth were estimated to be 0.33 h-1, 77 mg COD L-1, and 0.40 g g-1, respectively. Kinetic analysis revealed good simulation by the model for H2 and metabolite productions. The major volatile fatty acids produced were butyric acid (HBu), followed by acetic acid and propionic acid. Ethanol produced represented only 10% of HBu concentration which clearly indicated that the metabolic flow during anaerobic fermentation favored H2 production. These results indicate that this kinetic model could be used to describe the balance of hydrogen yield and process design for efficient hydrogen production from CMS wastewater.

Original languageEnglish
Pages (from-to)117-121
Number of pages5
JournalSustainable Environment Research
Volume21
Issue number2
Publication statusPublished - 2011 Jan 1

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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