Production of biohydrogen from hydrolyzed bagasse with thermally preheated sludge

Enhancement of Biohydrogen Production via Thermophilic Cell Culture Immobilized on Glass Beads and Raschig Rings of Different Sizes in a Packed Bed Reactor

“…Operating temperature and pH values are important parameters for dark fermentative hydrogen production. Many of the studies on producing biohydrogen were carried out at mesophilic conditions, while on the other hand, several reports indicated that thermophilic temperature conditions resulted in higher hydrogen yields 20 . Therefore, 55 °C was chosen as the best temperature for this project.…”

Production of Biofuels from Cellulose of Woody Biomass

“…In this context, lime treatment (e.g. treatment of woody biomass at 180 °C with lime solutions) has been considered as an effective chemical pretreatment method, because of its low cost and wide use in agro-and wood-based processes [4,27,[31][32][33][34]. Pretreatment with dilute acid at intermediate temperatures (e.g.…”

“…One alternative to address this difficulty is to pretreat the mixed culture with base, heat and/or an anaerobic condition, which eliminates/inhibits the non-producing/consuming hydrogen bacteria [34,113,117]. Heat pretreatment is commonly used in anaerobic fermentation in order to improve the hydrogen production by activating spore-forming clostridium and inhibiting hydrogen consuming non-spore-forming bacteria.…”

“…Heat pretreatment is commonly used in anaerobic fermentation in order to improve the hydrogen production by activating spore-forming clostridium and inhibiting hydrogen consuming non-spore-forming bacteria. However, the heat pretreatment might inactivate hydrogen producing bacteria existing in natural feedstock [34,37]. The elucidation of anaerobic activated sludge microbial community utilizing monosaccharides will be an important foundation towards the industrialization of hydrogen production.…”

“…In one study, a mixed microbial culture was obtained via the anaerobic activation of sludge in a continuous stirred-tank reactor (29 days of acclimatization) [118]. In this study, glucose had the highest specific hydrogen production rate (358 mL/g.g of mixed liquid volatile suspended solid) and conversion rate (82 mL/g glucose) among glucose, fructose, galactose and arabinose under the fermentation conditions of 35 °C and pH of 5 [34,118].…”