Optimising microalgae-derived butanol yield
Bauenova M.O. Sadvakasova A.K. Kossalbayev B.D. Yilmaz G. Huang Z. Wang J. Balouch H. Zaletova D.E. Lyaguta M.A. Alharby H.F. Allakhverdiev S.I.
2 January 2024Elsevier Ltd
International Journal of Hydrogen Energy
2024#49593 - 601 pp.
Rapid global urbanisation emphasises the necessity to explore sustainable energy resources to fulfill escalating energy demands. Biobutanol emerges as a promising biofuel due to heightened energy density and molecular similarity to petrol. Microalgae, rich in carbohydrates, offer a potential glucose source for biobutanol fermentation. The current study shows that varying CO2 concentrations affect carbohydrate content in the biomass of P. kessleri bh-2 and Scenedesmus sp.k-7. The introduction of 1% CO2 significantly improved carbohydrate productivity, reaching 74.5% for P. kessleri bh-2 and 71.0% for Scenedesmus sp.k-7. Enzymatic hydrolysis was found to be most effective for ABE fermentation, with optimal results obtained at enzyme loads of 8 mg g−1 cellulase and 2 mg g−1 amylase for both strains. When C. acetobutylicum cells were cultivated with pretreated P. kessleri bh-2 biomass, the biobutanol yield amounted to 4.8 gL-1 at a glucose concentration of 5.30 gL-1, demonstrating strains superior performance compared to Scenedesmus sp.k-7.
ABE fermentation , Biobutanol , Biofuel , CO2 , Hydrolysis , Microalgae
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Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
Ecology Research Institute, Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkistan, 161200, Kazakhstan
Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, 34353, Turkey
Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, No. 32, West 7th Road, Tianjin Airport Economic Area, Tianjin, 300308, China
Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russian Federation
Faculty of Biology and Biotechnology
Ecology Research Institute
Faculty of Engineering and Natural Sciences
Tianjin Institute of Industrial Biotechnology
Department of Biological Sciences
K.A. Timiryazev Institute of Plant Physiology
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