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Mini review: hydrogen and ethanol co-production from waste materials via microbial fermentation

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Abstract

The simultaneous production of hydrogen and ethanol by microorganisms from waste materials in a bioreactor system would establish cost-effective and time-saving biofuel production. This review aims to present the current status of fermentation processes producing hydrogen accompanied by ethanol as a co-product. We outlined the microbes used and their fundamental pathways for hydrogen and ethanol fermentation. Moreover, we discussed the exploitation of renewable and sustainable waste materials as promising feedstock and the limitations encountered. The low substrate bioconversion rate in hydrogen and ethanol co-production is regarded as the primary constraint towards the development of large scale applications. Thus, microbes with an enhanced capability have been generated via genetic manipulation to diminish the inefficiency of substrate consumption. In this review, other potential approaches to improve the performance of co-production through fermentation were also elaborated. This review will be a useful guide for the future development of hydrogen and ethanol co-production using waste materials.

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Acknowledgements

The authors would like to acknowledge the Fundamental Research Grant Scheme (FRGS/1/2012/SG06/UCSI/02/1) for funding the project.

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  1. Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia

    Chiu-Shyan Soo & Lai-Yee Phang

  2. Faculty of Applied Sciences, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia

    Wai-Sum Yap

  3. KDU University College, Damansara Jaya, 47400, Petaling Jaya, Selangor, Malaysia

    Wei-Min Hon

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  1. Chiu-Shyan Soo
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Soo, CS., Yap, WS., Hon, WM. et al. Mini review: hydrogen and ethanol co-production from waste materials via microbial fermentation. World J Microbiol Biotechnol 31, 1475–1488 (2015). https://doi.org/10.1007/s11274-015-1902-6

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