Realization process of microalgal biorefinery: The optional approach toward carbon net-zero emission
Abstract
Increasing carbon dioxide (CO 2 ) emission has already become a dire threat to the human race and Earth's ecology. Microalgae are recommended to be engineered as CO 2 fixers in biorefinery, which play crucial roles in responding climate change and accelerating the transition to a sustainable future. This review sorted through each segment of microalgal biorefinery to explore the potential for its practical implementation and commercialization, offering valuable insights into research trends and identifies challenges that needed to be addressed in the development process. Firstly, the known mechanisms of microalgal photosynthetic CO 2 fixation and the approaches for strain improvement were summarized. The significance of process regulation for strengthening fixation efficiency and augmenting competitiveness was emphasized, with a specific focus on CO 2 and light optimization strategies. Thereafter, the massive potential of microalgal refineries for various bioresource production was discussed in detail, and the integration with contaminant reclamation was mentioned for economic and ecological benefits. Subsequently, economic and environmental impacts of microalgal biorefinery were evaluated via life cycle assessment (LCA) and techno-economic analysis (TEA) to lit up commercial feasibility. Finally, the current obstacles and future perspectives were discussed objectively to offer an impartial reference for future researchers and investors.
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Some microalgae species, such as Chlorella vulgaris and Arthrospira platensis, have photosynthetic efficiencies of up to 5-6%.
“For example, some microalgae species, such as Chlorella vulgaris and Arthrospira platensis, have demonstrated photosynthetic efficiencies of up to 5–6%, significantly higher than terrestrial plants like maize (~1.5%) [2,3].”
Microalgae photosynthetic efficiencies are significantly higher than terrestrial plants like maize (~1.5%).
“For example, some microalgae species, such as Chlorella vulgaris and Arthrospira platensis, have demonstrated photosynthetic efficiencies of up to 5–6%, significantly higher than terrestrial plants like maize (~1.5%) [2,3].”
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Self-citation
- Authors
- Wang, Y., Yang, S., Liu, J., Wang, J., Xiao, M., Liang, Q., Ren, X., Wang, Y., Mou, H., & Sun, H.
- Venue
- Science of The Total Environment
- Publisher
- Elsevier BV
- Published
- 2023-11
- Volume
- 901
- Pages
- 165546
- ISSN
- 0048-9697
- Cited by
- 47
- References
- 26
- Language
- en
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