Journal
BIORESOURCE TECHNOLOGY
Volume 329, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.124935
Keywords
Seaweed; Macroalgae; Severity factor; Biofuels; Hydrothermal processing
Funding
- Innovation Incentive Program (PEI)-Mexican Science and Technology Council (SEP-CONACYT) [PEI-251186]
- National Council for Science and Technology (CONACYT, Mexico) [924192]
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Sargassum spp biomass was subjected to high-pressure technology for biomass fractionation to obtain glucan enriched pretreated solids, which were then further hydrolyzed with enzymes to produce glucose with high conversion yields. A pre-simultaneous saccharification and fermentation strategy was used to produce bioethanol from the glucose, demonstrating the feasibility of bioethanol production from macroalgal biomass.
Sargassum spp is an invasive macroalgae and an alternative feedstock for bioethanol production. Sargassum spp biomass was subjected to high-pressure technology for biomass fractionation under different operating conditions of temperature and residence time to obtain glucan enriched pretreated solids (32.22 g/100 g of raw material). Enzyme hydrolysis process at high pretreated solid loading (13%, w/v) and enzyme loading of 10 FPU/g of glucan was performed, obtaining 43.01 g/L of glucose corresponding to a conversion yield of 92.12%. Finally, a pre-simultaneous saccharification and fermentation strategy (PSSF) was performed to produce bioethanol. This operational strategy produced 45.66 g/L of glucose in the pre-saccharification stage, and 18.14 g/L of bioethanol was produced with a glucose to bioethanol conversion yield of 76.23%. The development of this process highlights the feasibility of bioethanol production from macroalgal biomass in the biorefinery concept.
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