Screening and optimisation of hydrogen production by newly isolated nitrogen-fixing cyanobacterial strains
Kamshybayeva G.K. Kossalbayev B.D. Sadvakasova A.K. Bauenova M.O. Zayadan B.K. Bozieva A.M. Alharby H.F. Tomo T. Allakhverdiev S.I.
22 May 2023Elsevier Ltd
International Journal of Hydrogen Energy
2023#48Issue 4416649 - 16662 pp.
Recently, there has been a propensity to postpone dealing with the worlds climate concerns until later, resulting in a 1.5 °C rise in temperature over the last century. Therefore, interest in biologically derived, inexhaustible energy sources based on solar energy is growing. Cyanobacteria have the potential to produce clean, renewable fuels in the form of hydrogen (H2) gas, derived from solar energy and water. The current study reports the screening 11 cyanobacterial strains isolated from rice paddies and hotsprings for efficient H2 producers. According to our findings, H2 concentrations in the species ranged from 3.6 to 48.9 μmol mg−1 Chl a h−1. H2 production by isolated species was shown to have a 2% positive influence on oxygen (O2) and carbon dioxide (CO2) concentrations and a 2% negative effect on all nitrogen gas (N2) concentrations. It was discovered that at high CO2 concentrations, photosynthesis is enhanced but H2 production is suppressed. Anabaena variabilis BTA-1047 was found to be the most active H2-producing species, with an H2 production activity of 21.3 μmol mg−1 Chl a h−1. Moreover, a 1% O2: 2% CO2 gas mixture doubled the strain activity of H2 production. The findings of the study called into the question the notion that only an anaerobic environment is required for H2 production by N2-fixing cyanobacterial species and explored whether H2 productivity can be increased by stimulating the micro-anaerobic environment with a carbon source.
Biohydrogen , Filamentous cyanobacteria , Hydrogenase , Isolation , Nitrogenase
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Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
Department of Chemical and Biochemical Engineering, Institute of Geology and Oil-Gas Business Institute Named after K. Turyssov, Satbayev University, Almaty, 050043, Kazakhstan
K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Str. 35, Moscow, 127276, Russian Federation
Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
Department of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, 34353, Turkey
Faculty of Biology and Biotechnology
Department of Chemical and Biochemical Engineering
K.A. Timiryazev Institute of Plant Physiology
Department of Biological Sciences
Department of Physics
Faculty of Engineering and Natural Sciences
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