Strategies and economic feasibilities in cyanobacterial hydrogen production

Kamshybayeva, Gulzhanay K.; Kossalbayev, Bekzhan D.; Sadvakasova, A. K.; Zayadan, B. K.; Bozieva, Ayshat M.; Дуников, Д. О.; Alwasel, Saleh; Allakhverdiev, Suleyman I.

doi:10.1016/j.ijhydene.2022.06.277

Cited by 24 publications

(2 citation statements)

References 134 publications

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“…Cyanobacteria also degrade harmful bioconstituents, such as cyanides, and convert them to methane, a unique biological capability found in certain cyanobacteria, such as Anabaena sp. Arthrospira platensisis is also reported to remove carbon dioxide from sewage sludge [112,113]. These supplementary techniques are expected to decrease the production cost of biofuel, which is viable for the bioenergy process.…”

Section: Biogas Production From Cyanobacteria Wastementioning

confidence: 99%

Current Issues and Developments in Cyanobacteria-Derived Biofuel as a Potential Source of Energy for Sustainable Future

Singh,

Kaushalendra,

Verma

et al. 2023

Sustainability

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Biofuel production using cyanobacteria aims to maintain the sustainability of an ecosystem with minimum impact on the environment, unlike fossil fuels, which cause havoc on the environment. The application of biofuel as an alternative energy source will not only help in maintaining a clean environment and improving air quality but also decrease harmful organic matter content from aquatic bodies. Cyanobacteria are valuable sources of many novel bioactive compounds, such as lipids and natural dyes, with potential commercial implications. One of the advantages of cyanobacteria is that their biochemical constituents can be modified by altering the source of nutrients and growth conditions. Careful changes in growth media and environmental conditions altering the quality and quantity of the biochemicals and yield capacity have been discussed and analyzed. In the present review, the challenges and successes achieved to date in the commercial production of biofuel and its application in the transportation industry are discussed. The authors also focus on different types of feedstocks obtained from biomass, especially from cyanobacterial species. This review also discusses the selection of appropriate cyanobacterial species with merits and demerits in the post-harvesting process. In sum, the current review provides insight into the use of organic bioresources to maintain a sustainable environment.

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Section: Biogas Production From Cyanobacteria Wastementioning

confidence: 99%

Current Issues and Developments in Cyanobacteria-Derived Biofuel as a Potential Source of Energy for Sustainable Future

Singh,

Kaushalendra,

Verma

et al. 2023

Sustainability

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“…Extensive research efforts have been undertaken to improve the production rate, yield, and titer of lactate and four-carbon dicarboxylic acids in terms of carbon intermediate competition. This involves the regulation of specific gene expression and the engineering of metabolic pathways (Khanna and Lindblad, 2015;Oliver et al, 2016;Kamshybayeva et al, 2022;Yamane and Osanai, 2023). Notably, when acetate kinase (AK) is lacking in the ΔackA strain, acetate production decreases while lactate and succinate production increases compared to the parental wild-type strain (Osanai et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Regulation of organic acid and hydrogen production by NADH/NAD+ ratio in Synechocystis sp. PCC 6803

Akiyama,

Osanai

2024

Front. Microbiol.

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Cyanobacteria serve as useful hosts in the production of substances to support a low-carbon society. Specifically, the unicellular cyanobacterium Synechocystis sp. PCC 6803 (Synechocystis 6803) can produce organic acids, such as acetate, lactate, and succinate, as well as hydrogen, under dark, anaerobic conditions. The efficient production of these compounds appears to be closely linked to the regulation of intracellular redox balance. Notably, alterations in intracellular redox balance have been believed to influence the production of organic acids and hydrogen. To achieve these alterations, genetic manipulations involved overexpressing malate dehydrogenase (MDH), knocking out d-lactate dehydrogenase (DDH), or knocking out acetate kinase (AK), which subsequently modified the quantities and ratios of organic acids and hydrogen under dark, anaerobic conditions. Furthermore, the mutants generated displayed changes in the oxidation of reducing powers and the nicotinamide adenine dinucleotide hydrogen (NADH)/NAD+ ratio when compared to the parental wild-type strain. These findings strongly suggest that intracellular redox balance, especially the NADH/NAD+ ratio, plays a pivotal role in the production of organic acids and hydrogen in Synechocystis 6803.

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