Algal biomass to biohydrogen: Pretreatment, influencing factors, and conversion strategies

Shashi Kant Bhatia, J. Rajesh Banu, Vijai Singh, Gopalakrishnan Kumar, Yung Hun Yang

Research output: Contribution to journalReview articlepeer-review

1 Citation (Scopus)


Hydrogen has gained attention as an alternative source of energy because of its non-polluting nature as on combustion it produces only water. Biological methods are eco-friendly and have benefits in waste management and hydrogen production simultaneously. The use of algal biomass as feedstock in dark fermentation is advantageous because of its low lignin content, high growth rate, and carbon-fixation ability. The major bottlenecks in biohydrogen production are its low productivity and high production costs. To overcome these issues, many advances in the area of biomass pretreatment to increase sugar release, understanding of algal biomass composition, and development of fermentation strategies for the complete recovery of nutrients are ongoing. Recently, mixed substrate fermentation, multistep fermentation, and the use of nanocatalysts to improve hydrogen production have increased. This review article evaluates the current progress in algal biomass pretreatment, key factors, and possible solutions for increasing hydrogen production.

Original languageEnglish
Article number128332
JournalBioresource technology
Publication statusPublished - 2023 Jan

Bibliographical note

Funding Information:
The authors acknowledge the KU Research Professor Program of Konkuk University, Seoul, South Korea. This research was supported by the C1 Gas Refinery Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT (2015M3D3A1A01064882), and by the National Research Foundation of Korea (NRF) [NRF-NRF-2022M3I3A1082545, NRF-2022M3J4A1053702, NRF-2022R1A2C2003138 and NRF-2021R1F1A1050325].

Publisher Copyright:
© 2022 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


Dive into the research topics of 'Algal biomass to biohydrogen: Pretreatment, influencing factors, and conversion strategies'. Together they form a unique fingerprint.

Cite this