Comparative evaluation of hydrogen fermentation of de-oiled Jatropha waste hydrolyzates

Gopalakrishnan Kumar, Biswarup Sen, Periyasamy Sivagurunathan, Chiu Yue Lin

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Fermentation of de-oiled Jatropha waste (DJW) hydrolyzate was carried out at 55 °C and pH 7 to evaluate the efficacy of the DJW pretreatment methods for enhancing the hydrogen production rate. The enzyme (7.5%) treated hydrolyzate showed a peak hydrogen production rate (HPR) and hydrogen yield (HY) of 5146 mL H2/L-d and 98 mL H2/g VSadded, respectively. The HCl (2.5%), H2SO4 (0.5%), ultrasonication (45 min), and heat treatment (100 °C, 45 min) treatments gave maximal HY of 43, 24, 23, and 34 mL H2/g VSadded, respectively. Further enzyme (5%) treatment of the acid (2%) unhydrolyzed biomass showed HPR of 2947 mL H2/L-d and HY of 106 mL H2/g VSadded. Besides, it was also observed that higher DJW concentrations during pretreatment, and higher butyrate levels in the fermentation process, led to increased release of reducing sugar and increased HPR, respectively. The total bioenergy production analysis revealed nearly 10-fold increase in the energy values with peak HPR and HY of 55 kJ/L-d and 1.0 kJ/g VSadded, respectively.

Original languageEnglish
Pages (from-to)10766-10774
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume40
Issue number34
DOIs
Publication statusPublished - 2015 Sep 14

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fermentation
hydrogen production
Hydrogen production
Fermentation
Hydrogen
evaluation
hydrogen
pretreatment
enzymes
Enzymes
biomass
sugars
Sugars
Biomass
heat treatment
Heat treatment
acids
Acids

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Kumar, Gopalakrishnan ; Sen, Biswarup ; Sivagurunathan, Periyasamy ; Lin, Chiu Yue. / Comparative evaluation of hydrogen fermentation of de-oiled Jatropha waste hydrolyzates. In: International Journal of Hydrogen Energy. 2015 ; Vol. 40, No. 34. pp. 10766-10774.
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Comparative evaluation of hydrogen fermentation of de-oiled Jatropha waste hydrolyzates. / Kumar, Gopalakrishnan; Sen, Biswarup; Sivagurunathan, Periyasamy; Lin, Chiu Yue.

In: International Journal of Hydrogen Energy, Vol. 40, No. 34, 14.09.2015, p. 10766-10774.

Research output: Contribution to journalArticle

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