Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 45, Issue 4, Pages 2627-2639Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.11.164
Keywords
Biohydrogen; Cyanobacteria; Direct biophotolysis; Indirect biophotolysis; DCMU
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Funding
- Ministry of Education and Science, the Republic of Kazakhstan [AP05131218]
- Ministry of Education, Culture, Sports, Science, and Technology, Japan [17726220801, 17K07453, 18H05177]
- Russian Science Foundation [19-14-00118]
- [RSP-2019/59]
- Russian Science Foundation [19-14-00118] Funding Source: Russian Science Foundation
- Grants-in-Aid for Scientific Research [18H05177] Funding Source: KAKEN
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Hydrogen (H-2) is a renewable, abundant, and nonpolluting source of energy. Photosynthetic organisms capture sunlight very efficiently and convert it into organic molecules. Cyanobacteria produce H-2 by breaking down organic compounds and water. In this study, biological H-2 was produced from various strains of cyanobacteria. Moreover, H-2 accumulation by Synechocystis sp. PCC 6803 was as high as 0.037 umol/mg Chl/h within 120 h in the dark. The wild-type, filamentous, non-heterocystous cyanobacterium Desertifilum sp. IPPAS B-1220 was found to produce a maximum of 0.229 mu mol/mg Chl/h in the gas phase within 166 h in the light, which was on par with the maximum yield reported in the literature. DCMU at 10 mu M increased H-2 production by Desertifilum sp. IPPAS B-1220 by 1.5-fold to 0.348 mu mol H-2/mg Chl/h. This is the first report on the capability of Desertifilum cyanobacterium to produce H-2. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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