Microalgae-derived hydrogen production towards low carbon emissions via large-scale outdoor systems

Young Joon Sung, Byung Sun Yu, Ha Eun Yang, Dong Hoon Kim, Ju Yeon Lee, Sang Jun Sim

Research output: Contribution to journalReview articlepeer-review

Abstract

Hydrogen as a clean fuel is receiving attention because it generates only water and a small amount of nitrogen oxide upon combustion. Biohydrogen production using microalgae is considered to be a highly promising carbon–neutral technology because it can secure renewable energy while efficiently reducing CO2 emissions. However, previous studies have mainly focused on improving the biological performance of microalgae; these approaches have struggled to achieve breakthroughs in commercialization because they do not heavily consider the complexity of the entire production process with microalgae, including large-scale cultivation, biomass harvest, and biomass storage. This work presents an in-depth analysis of the state-of-the-art technologies focused on large-scale cultivation systems with efficient downstream processes. Considering the individual processes of biohydrogen production, strategies are discussed to minimize carbon emissions and improve productivity simultaneously. A comprehensive understanding of microalgae-derived biohydrogen production suggests future directions for realizing environmental and economic sustainability.

Original languageEnglish
Article number128134
JournalBioresource technology
Volume364
DOIs
Publication statusPublished - 2022 Nov

Keywords

  • Biohydrogen production
  • Biomass production
  • Carbon emission
  • Downstream process
  • Microalgae

ASJC Scopus subject areas

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

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