Biogenic H2 production from mixed microalgae biomass: Impact of pH control and methanogenic inhibitor (BESA) addition

Gopalakrishnan Kumar, Guangyin Zhen, Periyasamy Sivagurunathan, Péter Bakonyi, Nándor Nemestóthy, Katalin Bélafi-Bakó, Takuro Kobayashi, Kai Qin Xu

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27 Citations (Scopus)


Hydrogen production from mixed microalgae biomass, predominantly containing Scendesmus and chlorella species, was investigated with a focus on enhancement strategies, in particular (i) pH control (at 5.5) and (ii) methanogenic inhibitor (BESA) addition along with pH control at 5.5. The results obtained showed that the later condition remarkably increased the performances. This was mainly ascribed to the occurrence of a suitable environment for the hydrogen producers to perform actively. Hydrogen production under these conditions (i.e., both pH 5.5 and pH 5.5+BESA) was significantly higher than that of the control experiment. Using the pH control at 5.5 and BESA addition, peak hydrogen production rate (HPR) and hydrogen yield (HY) were attained as 210 mL/L/d and 29.5 mL/g VSadded, respectively. This improvement was nearly 3-folds higher compared with the control experiment with an HPR of 62 mL/L/d and an HY of 9.5 mL/g VSadded.

Original languageEnglish
Pages (from-to)470-474
Number of pages5
JournalBiofuel Research Journal
Issue number3
Publication statusPublished - 2016

Bibliographical note

Funding Information:
The authors wish to thank the Japan Society for Promotion of Science: JSPS ID: 26-04209 and JSPS ID: 25740056 for the financial support of this study.

Publisher Copyright:
© 2016 BRTeam.

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology


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