Effects of various dilute acid pretreatments on the biochemical hydrogen production potential of marine macroalgal biomass

Periyasamy Sivagurunathan, Gopalakrishnan Kumar, Takuro Kobayashi, Kaiqin Xu, Sang Hyoun Kim

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

This research investigated the effects of various dilute acid (HCl, H2SO4, HNO3, H3PO4) pretreatment on the solubilization of marine macroalgal biomass Gelidium amansii and subsequent hydrogen fermentation in a batch vials. The dry grounded biomass was hydrolyzed at temperature of 121 °C, solid/liquid (S/L) ratio of 5% (w/v), dilute acid concentration (1%) of various reagents, and reaction time of 30 min. The hydrolyzates obtained at these conditions were then fed to batch hydrogen fermentation. Results revealed that only H2SO4 pretreatment method had a significant effect on improvement of biohydrogen production from Gelidium amansii, whereas the other pretreatment conditions were even worse than the control experiment. Dilute sulfuric acid (1%) provided a maximum hydrogen production of 52 mL-H2/g-dry biomass, whereas control experiment provided a hydrogen efficiency of 27 mL-H2/g-dry biomass. The results showed that selection of appropriate pretreatment method is essential for enhanced hydrogen production from macroalgal biomass.

Original languageEnglish
Pages (from-to)27600-27606
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number45
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

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

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