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Microalgae biomass deconstruction using green solvents: Challenges and future opportunities
School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
Department of Biotechnology, Vignan's Foundation for Science, Technology and Research, Vadlamudi, 522213, Guntur, Andhra Pradesh, India.
Department of Chemical Engineering, SUNY College of Environmental Science and Forestry, Syracuse, NY, USA 13210.
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2023 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 369, article id 128429Article in journal (Refereed) Published
Abstract [en]

Microalgae enable fixation of CO2 into carbohydrates, lipids, and proteins through inter and intracellularly biochemical pathways. These cellular components can be extracted and transformed into renewable energy, chemicals, and materials through biochemical and thermochemical transformation processes. However, recalcitrant cell wall and lack of environmentally benign efficient pretreatment processes are key obstacles in the commercialization of microalgal biorefineries. Thus, current article describes the microalgal chemical structure, type, and structural rigidity and summarizes the traditional pretreatment methods to extract cell wall constituents. Green solvents such as ionic liquid (ILs), deep eutectic solvents (DES), and natural deep eutectic (NDESs) have shown interesting solvent characteristics to pretreat biomass with selective biocomponent extraction from microalgae. Further research is needed in task-specific IL/DES design, cation-anion organization, structural activity understanding of ILs-biocomponents, environmental toxicity, biodegradability, and recyclability for deployment of carbon-neutral technologies. Additionally, coupling the microalgal industry with biorefineries may facilitate waste management, sustainability, and gross revenue.

Place, publisher, year, edition, pages
Elsevier , 2023. Vol. 369, article id 128429
Keywords [en]
Microalgal biomass, pretreatment, ionic liquids, deep eutectic solvents, lipids
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:hig:diva-40594DOI: 10.1016/j.biortech.2022.128429ISI: 000902095800010PubMedID: 36473586Scopus ID: 2-s2.0-85144447931OAI: oai:DiVA.org:hig-40594DiVA, id: diva2:1717606
Available from: 2022-12-09 Created: 2022-12-09 Last updated: 2023-09-08Bibliographically approved

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