Monographies

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    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.
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    Combinational and Sequential Logic
    (M’hamed bougara University of Boumerdes: Faculty of Technology : Department Electrical Systems Engineering, 2025) Akroum, Hamza
    This course is part of Fundamental Study Unit 2.2.1 within the second-year bachelor’s degree program in Electrical Engineering. It is offered in the fourth semester (S4) and is intended for students across multiple specializations such as Electronics, Automation, Electrotechnics, Telecommunications, Mechatronics, and related fields. The subject “Combinational and Sequential Logic” constitutes a cornerstone of digital electronics, providing both the theoretical foundations and practical methodologies required for the analysis and design of digital systems. This document is structured into eight chapters, systematically aligned with the official curriculum. It is designed to gu ide students from the fundamental principles of Boolean algebra and combinational logic to the more advanced concepts of sequential circuits, highlighting their relevance in the conception and implementation of modern digital systems.