2022
DOI: 10.1007/s00449-022-02738-4
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Novel strategies towards efficient molecular biohydrogen production by dark fermentative mechanism: present progress and future perspective

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Cited by 24 publications
(5 citation statements)
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“…Identifying genes involved in several possible carbon fixation routes among the MAGs is also a relevant aspect since the biotechnological use of autotrophic organisms with high-CO2-dependent and energetically efficient pathways can be advantageous in bioreactors [ 124 ]. The absence of complete methanogenesis pathways in our community metabolic reconstruction also draws attention to the shared features with dark fermentative biohydrogen production (DFBHP), a process performed by facultative and obligate anaerobes growing on simple sugars and starch to produce a mixture of hydrogen gas and VFAs [ 167 ]. Many factors constrain the hydrogen production in such systems, especially the presence of H2-consuming bacteria as methanogens, homoacetogens and SRB, which may be balanced by the co-culture with different H2-producing acidogens and SAOB/SPOB [ 140 , 146 , 167 , 168 ].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Identifying genes involved in several possible carbon fixation routes among the MAGs is also a relevant aspect since the biotechnological use of autotrophic organisms with high-CO2-dependent and energetically efficient pathways can be advantageous in bioreactors [ 124 ]. The absence of complete methanogenesis pathways in our community metabolic reconstruction also draws attention to the shared features with dark fermentative biohydrogen production (DFBHP), a process performed by facultative and obligate anaerobes growing on simple sugars and starch to produce a mixture of hydrogen gas and VFAs [ 167 ]. Many factors constrain the hydrogen production in such systems, especially the presence of H2-consuming bacteria as methanogens, homoacetogens and SRB, which may be balanced by the co-culture with different H2-producing acidogens and SAOB/SPOB [ 140 , 146 , 167 , 168 ].…”
Section: Resultsmentioning
confidence: 99%
“…The absence of complete methanogenesis pathways in our community metabolic reconstruction also draws attention to the shared features with dark fermentative biohydrogen production (DFBHP), a process performed by facultative and obligate anaerobes growing on simple sugars and starch to produce a mixture of hydrogen gas and VFAs [ 167 ]. Many factors constrain the hydrogen production in such systems, especially the presence of H2-consuming bacteria as methanogens, homoacetogens and SRB, which may be balanced by the co-culture with different H2-producing acidogens and SAOB/SPOB [ 140 , 146 , 167 , 168 ]. Evidence of the co-occurrence between H2-consuming and H2-producing populations was observed among the ETDI MAGs.…”
Section: Resultsmentioning
confidence: 99%
“…In dark fermentation, anaerobic microorganisms, such as species of the genus Clostridium (e.g., Clostridium butyricum, Clostridium cellolosi, and Clostridium acetobutylicum), play a fundamental role in converting sugars and other organic compounds into hydrogen, in addition to generating organic acids (e.g., lactic acid, acetic acid, and butyric acid) and alcohols [185,232]. Another essential genus is Enterobacter, with species such as Enterobacter aerogenes also contributing to hydrogen production under anaerobic conditions [63,232,233]. Photofermentation depends on solar energy to generate hydrogen, with phototrophic bacteria such as Rhodobacter sphaeroides and Rhodopseudomonas palustris leading this process [234][235][236].…”
Section: Overviewmentioning
confidence: 99%
“…Other constraints of the DFBHP process include pH fluctuation, the accumulation of various metabolites such as volatile fatty acids, and inhibitory byproducts such as phenolics and furan derivatives [ 30 ]. To make DFBHP more practical for industrial applications, various process improvement strategies have been developed, such as efficient anaerobic bacteria screening, bacteria immobilization, bacteria co-culturing, and strain metabolic pathways regulation [ 31 , 32 ].…”
Section: Biohydrogen Production (Bhp) Systemsmentioning
confidence: 99%