Influence of organic carbon source on hydrogen production and nutrient removal by microbial consortium in anaerobic photobioreactors

Vargas, Sarah Regina; Macêdo, Williane Vieira; Trindade, Liliane Folli; Zaiat, Marcelo

doi:10.1016/j.ijhydene.2023.11.354

Cited by 3 publications

(2 citation statements)

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“…However, there are challenges associated with the production and use of hydrogen, including the high cost of production and storage, its corrosiveness to metals, the need for infrastructure development, and safety concerns related to handling and storage. In any case, the production and use of hydrogen is an important area of research and development as we strive to improve both economic and environmental sustainability in the near future [7].…”

Section: Introductionmentioning

confidence: 99%

“…Other hydrogen production methods include microbial electrohydrogenesis cells, which produce hydrogen simultaneously with wastewater treatment, biophotolysis, which dissociates the water molecule into hydrogen and oxygen and, finally, dark fermentation [7]. Dark fermentation involves strict anaerobes or facultative bacterial strains using organic matter, biomass, and wastewater as substrates.…”

Section: Introductionmentioning

confidence: 99%

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Photo-Fermentative Bacteria Used for Hydrogen Production

Gupta,

Fernandes,

Lopes

et al. 2024

Applied Sciences

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Photo-fermentation is an efficient hydrogen production pathway in which purple non-sulfur bacteria (PNSB) play an active role and produce hydrogen as a part of their metabolism under optimal conditions. These bacteria work under the influence of light to advance their metabolism and use various substrates, such as simple sugars and volatile fatty acids, to produce hydrogen. This article presents a comparative review of several bacterial strains that have been efficiently used to produce hydrogen by photo-fermentation under different optimized conditions, including the substrate, its concentration, type and capacity of the bioreactor, light sources and intensities, and process conditions to achieve the maximum biohydrogen production rate. The analysis showed that the Rhodopseudomonas palustris is the main bacterium used for hydrogen production, with a maximum hydrogen production rate of 3.2 mM/h using 27.8 mM of glucose in a 165 mL serum bottle and 3.23 mM/h using 50 mM of glycerol at pH 7, followed by Rhodobacter sphaeroides, which gave a hydrogen production rate as high as 8.7 mM/h, using 40 mM of lactic acid, pH 7, and 30 °C temperature in a single-walled glass bioreactor. However, it is not preferred over R. palustris due to its versatile metabolism and ability to use an alternative mode if the conditions are not carefully adjusted, which can be a problem in hydrogen production.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%