Improvement of hydrogen production from glucose by ferrous iron and biochar

Advanced bioH2 and bioCH4 production with cobalt-doped magnetic carbon

“…The highest H 2 yield in this work was 176 mL per g glucose, which was higher than those (83-148 mL per g glucose) previously reported by some researchers 15,17,18 and lower than those (211.55-234.4 mL per g glucose) previously reported by others (Table 5). 15,22,51,52 In addition, the highest increase in experimental CH 4 yield was 24.3%, which was similar to that determined by Lin et al (25%), 53 and lower than those found by Luo et al 27 (70.6%), 56 (45%) ( Table 6). Nevertheless, there were obvious differences in the mixed culture, carbon source, OLR, fermentation temperature, and external carbon and mineral species, which impact biogas production.…”

Simultaneous intensification of direct acetate cleavage and CO2 reduction to generate methane by bioaugmentation and increased electron transfer

“…S2). Moreover, the addition of materials seemed to further enhance the production of hydrogen, suggesting that CMs, such as biochar and magnetite, may be beneficial to C. pasteurianum and/or indigenous microorganisms with fermentation function in anaerobic sludge [37,38]. In fact, compared to treatments of the control and bioaugmentation groups, methane production rate were higher in the presence of CMs.…”

A Review of the Enhancement of Bio-Hydrogen Generation by Chemicals Addition

“…For example, the hydrogen production yield was higher in continuous BHP, compared with the batch operation [129,131]. This is possibly due to the effective removal of inhibitory metabolic intermediates, which creates a favorable chemical environment for hydrogenase to catalyze the hydrogen formation reaction [132,133]. Nonetheless, although continuous operation could be more appealing compared to batch operation for large-scale production, cells washing-out is one of the critical problems that need to be carefully handled during continuous operation.…”