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Microbial cell immobilization in biohydrogen production: a short overview

Sekoai, Patrick Thabang and Awosusi, A. A. and Yoro, Kelvin O. and Singo, Muofhe and Oloye, Olawale and Ayeni, .A. O. and Bodunrin, Michael and Daramola, Michael Olawale (2017) Microbial cell immobilization in biohydrogen production: a short overview. CRITICAL REVIEWS IN BIOTECHNOLOGY.

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The high dependence on fossil fuels has escalated the challenges of greenhouse gas emissions and energy security. Biohydrogen is projected as a future alternative energy as a result of its non-polluting characteristics, high energy content (122 kJ/g), and economic feasibility. However, its industrial production has been hampered by several constraints such as low process yields and the formation of biohydrogen-competing reactions. This necessitates the search for other novel strategies to overcome this problem. Cell immobilization technology has been in existence for many decades and is widely used in various processes such as wastewater treatment, food technology, and pharmaceutical industry. In recent years, this technology has caught the attention of many researchers within the biohydrogen production field owing to its merits such as enhanced process yields, reduced microbial contamination, and improved homogeneity. In addition, the use of immobilization in biohydrogen production prevents washout of microbes, stabilizes the pH of the medium, and extends microbial activity during continuous processes. In this short review, an insight into the potential of cell immobilization is presented. A few immobilization techniques such as entrapment, adsorption, encapsulation, and synthetic polymers are discussed. In addition, the effects of process conditions on the performance of immobilized microbial cells during biohydrogen production are discussed. Finally, the review concludes with suggestions on improvement of cell immobilization technologies in biohydrogen production.

Item Type: Article
Uncontrolled Keywords: Biohydrogen; cell immobilization; process parameters; microorganisms
Subjects: T Technology > T Technology (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 23 Apr 2021 12:48
Last Modified: 23 Apr 2021 12:48

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