Hydrogen photosynthesis by and its coupling to a PEM fuel cell

Production of hydrogen from renewable resources and its effectiveness

“…The efficiency of the proposed methods differs greatly as can be seen in Table 2 (the production of hydrogen by the photofermentation of bacteria from biomass and waste water) [15,24,42,43].…”

Biohydrogen production using green microalgae as an approach to operate a small proton exchange membrane fuel cell

“…He and al. [14] showed that several strains of Rhodobacter capsulatus generate biogas containing hydrogen which is successfully used as feed for a small PEM Fuel Cell system. More recently, García-Peña and al.…”

Light Spectra and Luminosity Influence on Photosynthetic Hydrogen Production byRhodobacter Capsulatus

“…Moreover, biological processes can be operated at standard conditions, can use renewable energy sources and are free of carbon emissions. nevertheless, the reported bio-hydrogen generation rates, process efficiencies and stability are not high enough to make them available at industrial scale (3,4,15,24,35,37). in this context, the photosynthetic hydrogen generation using various bacteria offers promising perspectives.…”

“…in this context, the photosynthetic hydrogen generation using various bacteria offers promising perspectives. Photosynthetic bacteria such as R. capsulatus have long been studied for their capacity to produce significant amounts of hydrogen from various carbon sources (15,19,21,27,35,38), including wastes (1,2,7,9,10,11,12,13,14,16,25,28,31,36,39,40). however, the production rate and the yield vary greatly depending on the carbon source used and the experimental conditions such as light type and intensity (3,4,20,24,33,37), ph (17,18), and temperature (26,32,34).…”

“…however, the production rate and the yield vary greatly depending on the carbon source used and the experimental conditions such as light type and intensity (3,4,20,24,33,37), ph (17,18), and temperature (26,32,34). on the other hand, several studies have demonstrated that mutant strains can be isolated and display improved hydrogen producing capabilities compared to the wild type (15,20,22,27,35). the objective of the present work is the comparative study of the influence of parameters as: light intensity, light spectrum (light source) as well as the reactor geometry on the rate of hydrogen production by the wild variety B10 and the genetically modified one IR3 of the bacterial strain R. capsulatus (B10) using a lactate-based substrate.…”