TY - JOUR
T1 - Biohydrogen production through dark fermentation: Recent trends and advances in transition to a circular bioeconomy
AU - Ahmad, A.
AU - K, R.
AU - Hasan, S.W.
AU - Show, P.L.
AU - Banat, F.
N1 - Publisher Copyright:
© 2023 Hydrogen Energy Publications LLC
PY - 2024/1/2
Y1 - 2024/1/2
N2 - Fossil fuel reserves have drastically decreased over the past two decades, contributing to a worldwide decline in energy sources. The volatility of energy prices and their serious ecological consequences have drawn the attention of researchers to alternative carbon-neutral renewable energy sources. Furthermore, ineffective waste management contributes to environmental contamination, harms human health, and negatively affects the global economy. Biohydrogen (Bio-H
2) derived from waste biomass via dark fermentation is a valuable green fuel to solve the issues of clean energy production and waste management. Bio-H
2 has several advantages over other biofuels, including carbon-neutral production, ease of generation, low carbon dioxide (CO
2) emissions, and high energy efficiency. Besides, by using biowaste to produce bio-H
2, global warming and CO
2 emissions associated with biowaste incineration can be reduced. Although dark fermentation produces the most efficient and clean bio-H
2, the yield and rate of production of the process are very low. This review article summarizes the recent developments in dark fermentation processes to enhance bio-H
2 yield and productivity, including pre-treatment, additives inclusion, and integrated solutions. Additionally, this article highlights the metabolic pathways of Bio-H
2 production and inhibitory substances that negatively affect dark fermentation. Challenges related to bio-H
2 technology transfer from lab to industry are discussed, and prospects for future research to realize the technology transfer are briefed. Further, an integrated carbon-neutral approach by dark fermentation-assisted bio-H
2 production is also discussed as a contribution to circular bioeconomy.
AB - Fossil fuel reserves have drastically decreased over the past two decades, contributing to a worldwide decline in energy sources. The volatility of energy prices and their serious ecological consequences have drawn the attention of researchers to alternative carbon-neutral renewable energy sources. Furthermore, ineffective waste management contributes to environmental contamination, harms human health, and negatively affects the global economy. Biohydrogen (Bio-H
2) derived from waste biomass via dark fermentation is a valuable green fuel to solve the issues of clean energy production and waste management. Bio-H
2 has several advantages over other biofuels, including carbon-neutral production, ease of generation, low carbon dioxide (CO
2) emissions, and high energy efficiency. Besides, by using biowaste to produce bio-H
2, global warming and CO
2 emissions associated with biowaste incineration can be reduced. Although dark fermentation produces the most efficient and clean bio-H
2, the yield and rate of production of the process are very low. This review article summarizes the recent developments in dark fermentation processes to enhance bio-H
2 yield and productivity, including pre-treatment, additives inclusion, and integrated solutions. Additionally, this article highlights the metabolic pathways of Bio-H
2 production and inhibitory substances that negatively affect dark fermentation. Challenges related to bio-H
2 technology transfer from lab to industry are discussed, and prospects for future research to realize the technology transfer are briefed. Further, an integrated carbon-neutral approach by dark fermentation-assisted bio-H
2 production is also discussed as a contribution to circular bioeconomy.
KW - Biohydrogen
KW - Circular bioeconomy
KW - Dark fermentation
KW - Sustainability
UR - http://www.scopus.com/inward/record.url?scp=85161007838&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2023.05.161
DO - 10.1016/j.ijhydene.2023.05.161
M3 - Article
SN - 0360-3199
VL - 52
SP - 335
EP - 357
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
ER -