Abstract：
:Microalgal biohydrogen (bioH2) has attracted global interest owing to its potential carbon-free source of sustainable renewable energy. Most of previous reviews which focused on microalgal bioH2, have shown unclear differentiation among the metabolic pathways. In this review, investigation of all different metabolic pathways for microalgal bioH2 production along with discussion on the recent research work of last 5-years have been considered. The major factors (such as light, vital nutrients, microalgal cell density, and substrate bioavailability) are highlighted. Moreover, effect of various pretreatment approaches on the constituent's bioaccessibility is reported. Microbial electrolysis cells as a new strategy for bioH2 production is stated. Comparison between the operation conditions of various bioreactors and economic feasibility is also emphasized. Genetic, metabolic engineering, and synthetic biology as recent technologies improved the microalgal bioH2 production through inactivation of uptake hydrogenase (H2ase), inhibition of the competing pathways in polysaccharide synthesis, and improving the O2 tolerant H2ase.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
El-Dalatony MM,Zheng Y,Ji MK,Li X,Salama ESdoi
10.1016/j.biortech.2020.124253subject
Has Abstractpub_date
2020-12-01 00:00:00pages
124253eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31527-3journal_volume
318pub_type
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