Browsing by Author "Akroum-Amrouche, Dahbia"

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Biohydrogen production by dark and photo-fermentation processes
(IEEE, 2013) Akroum-Amrouche, Dahbia; Abdi, N.; Lounici, H.; Mameri, N.
Challenges and Opportunities in Green Hydrogen Production Materials for Biological Hydrogen Production
(Springer, 2024) Akroum-Amrouche, Dahbia; Akroum, Hamza; Lounici, Hakim
Biohydrogen is regarded as an attractive renewable source of clean energy and an environmentally friendly alternative to conventional fossil fuels. BioH2 can be produced via different biological pathways like direct and indirect biophotolysis, photo-fermentation, dark-fermentation, and bio-electrolysis using microbial electrolysis cells (MEC). The MEC is a bioelectrochemical approach that can be used to treat wastewater and produce biohydrogen, simultaneously. The MEC performance is highly affected by several factors such as microbial communities, cathode and anode catalysts’ activities, electrode materials and structures, current output, reactor design, associated anode and biocathode, catalysts, and substrate type, and concentration used. This chapter provides an overview of the recent developments in biological and non-biological materials involved in microbial electrolysis cells for biohydrogen production. The microbial species and enzymes, bio-inspired catalysts, advances in materials, and integration systems applied in these bioprocesses to improve catalytic performance, achieve lower configuration cost, and provide stable and efficient biohydrogen production are presented.
Green hydrogen production by Rhodobacter sphaeroides
(Taylor and Francis Online, 2019) Akroum-Amrouche, Dahbia; Akroum, Hamza; Lounici, Hakim
The photo-fermentative biohydrogen production using photosynthetic purple non-sulfur and non-oxygenic bacteria Rhodobacter sphaeroides is a very promising green technology. In this paper, several strategies conducted in the literature to make the bioprocess more economical, less expensive and more efficient have been reviewed. The used of co-cultures and genetic modification strategies increased the yield and the rate of hydrogen production. Also, the biohydrogen production using organic wastes as a substrate, an environmentally friendly process, in several reactors designs with immobilized and suspension cultures have been employed to achieve a high conversion efficiency of the substrate and light energy. At the optimized conditions, the hydrogen production enhances and becomes more economi
Modeling methods used in bioenergy production processes: A review
(Techno press, 2020) Akroum, Hamza; Akroum-Amrouche, Dahbia; Aibeche, Abderrazak
The enhancements of bioenergy production effectiveness require the comprehensively experimental study of several parameters affecting these bioprocesses. The interpretation of the obtained experimental results and the estimation of optimum yield are extremely complicated such as misinterpreting the results of an experiment. The use of mathematical modeling and statistical experimental designs can consistently supply the predictions of the potential yield and the identification of defining parameters and also the understanding of key relationships between factors and responses. This paper summarizes several mathematical models used to achieve an adequate overall and maximal production yield and rate, to screen, to optimize, to identify, to describe and to provide useful information for the effect of several factors on bioenergy production processes. The usefulness, the validity and, the feasibility of each strategy for studying and optimizing the bioenergy-producing processes were discussed and confirmed by the good correlation between predicted and measured values