Effect of sonication pretreatment on hydrogen and acetone-butanol-ethanol coproduction from Chlamydomonas mexicana biomass using Clostridium acetobutylicum

Energy Recovery from Herbal Wastewater and Monosodium Glutamate Wastewater through Anaerobic Co-Digestion

“…4, the biohydrogen production could raise up to 7082±7.7 mL L -1 d - of 2 moles of hydrogen would be accompanied by the production of 1 mole of acetic acid.it could be found that acetate was produced by acidogenesis in anaerobic digestion for biohydrogen and excess of biohydrogen was produced from other microorganisms' metabolic pathway, including ethanol-type fermentation (Eq.2) and butyrate-type fermentation (Eq.3) as well as other metabolic pathways [13]. There was no homoacetogenesis process involving hydrogen and carbon dioxide consumption in this system, though hydrogen accumulation could favor homoacetogenesis [14]. A little amount of propionate which consumed hydrogen during its production was detected in the VFAs besides OLR of 61.6 g COD L -1 d -1 , but this has little effect on final biohydrogen production.…”

Fermentation of micro- and macroalgae as a way to produce value-added products

“… Microalgae Butanol, hydrogen, ethanol Anaerobic digestion at 37 °C [123] Clostridium acetobutylicum. АТСС824 Chlorella vulgaris JSC-6 Green microalgae Butanol Anaerobic digestion at 37 °C, 24 h [126] Clostridium butyricum CGS5 Chlorella vulgaris ESP6 Green microalgae Hydrogen Fermentation in liquid phase at 37 °C, pH 7 [127] Clostridium butyricum Scenedesmus obliquus Green microalgae Hydrogen Fermentation in liquid phase at 37 or 58 °C 144 h [128] Enterobacter aerogenes, Clostridium butyricum Scenedesmus obliquus Green microalgae Hydrogen Periodic fermentation in liquid phase at 37 °C 48 h [129] Clostridium acetobutylicum Chlamydomonas mexicana Green microalgae Hydrogen, acetone, butanol, and ethanol Periodic fermentation in liquid phase at 37 °C 24 days [130] Clostridium butyricum Spirogyra Green macroalgae Hydrogen Fermentation in liquid phase 36 h [124] Clostridium phytofermentans DSM1183 Chlamydomonas dorsoventralis, Graesiella emersonii, Coelastrum proboscideum, Scenedesmus obliquus, Micractinium sp., Desmodesmus sp. and Chlorella sp.…”