Co-digestion of untreated macro and microalgal biomass for biohydrogen production

Impact of inoculum augmentation and microbial insights

Periyasamy Sivagurunathan, Gopalakrishnan Kumar, Takuro Kobayashi, Kaiqin Xu, Sang-Hyoun Kim, Dinh Duc Nguyen, Soon Woong Chang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This study assessed the co-digestion of macro and microalgal biomass towards the improvement of hydrogen production. The red macroalgal biomass (Gelidium amansii) and green mixed microalgal biomass was mixed in a ratio of 8:2, with an initial substrate concentration of 10 g/L, and various amount of inoculum addition range from 3 to 15% (v/v) was evaluated to assess the feasible substrate to inoculum ratio for the effective co-digestion of the algal biomass. The results showed that the co-digestion with 6% inoculum addition provided the peak hydrogen yield of 45 mL/g dry biomass added with a high hydrogen content of 24% in the gas phase. The other tested conditions showed moderate hydrogen content in the range of 17–22%, respectively. These results suggest that anaerobic co-digestion of macro and microalgal biomass, with appropriate initial biomass loading (6%) is essential for enhanced hydrogen production.

Original languageEnglish
Pages (from-to)11484-11492
Number of pages9
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number25
DOIs
Publication statusPublished - 2018 Jun 21

Fingerprint

inoculum
biomass
Macros
Biomass
augmentation
hydrogen production
Hydrogen production
Hydrogen
hydrogen
Substrates
vapor phases

All Science Journal Classification (ASJC) codes

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

Cite this

Sivagurunathan, Periyasamy ; Kumar, Gopalakrishnan ; Kobayashi, Takuro ; Xu, Kaiqin ; Kim, Sang-Hyoun ; Nguyen, Dinh Duc ; Chang, Soon Woong. / Co-digestion of untreated macro and microalgal biomass for biohydrogen production : Impact of inoculum augmentation and microbial insights. In: International Journal of Hydrogen Energy. 2018 ; Vol. 43, No. 25. pp. 11484-11492.
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Co-digestion of untreated macro and microalgal biomass for biohydrogen production : Impact of inoculum augmentation and microbial insights. / Sivagurunathan, Periyasamy; Kumar, Gopalakrishnan; Kobayashi, Takuro; Xu, Kaiqin; Kim, Sang-Hyoun; Nguyen, Dinh Duc; Chang, Soon Woong.

In: International Journal of Hydrogen Energy, Vol. 43, No. 25, 21.06.2018, p. 11484-11492.

Research output: Contribution to journalArticle

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AU - Sivagurunathan, Periyasamy

AU - Kumar, Gopalakrishnan

AU - Kobayashi, Takuro

AU - Xu, Kaiqin

AU - Kim, Sang-Hyoun

AU - Nguyen, Dinh Duc

AU - Chang, Soon Woong

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