Biohydrogen production from soluble condensed molasses fermentation using anaerobic fermentation

Fermentative hydrogen production from wastewaters: A review and prognosis

“…Azbar et al [22] reported the highest HY (22 mmol/g COD) in a CSTR system fed with cheese processing wastewater at a pH of 5.5. The maximum HPR was also obtained at a constant pH of 5.5 in a CSTR system using condensed molasses fermentation solubles (40 g COD/L) feedstock [24]. The other high HPR values of 8.3e8.6 L/L/d were obtained at an initial pH of 6.05 using brewery wastewater [26] and at pH 5.5 using palm oil effluent [10].…”

“…The possible reason could be that at low substrate concentration, the substrate got completely converted to biohydrogen. In contrast, the maximum HPR was obtained at 35 C during condensed molasses solubles fermentation in CSTR system [24]. While developing biohydrogen production technology, it is very important that the system is operated at lower temperatures that would not only have positive energy gain but also safe during maintenance and monitoring.…”

“…High HPR of 8.58 L/L/d and 8.27 L/L/d from brewery wastewater (6.05 g COD/L) and palm oil effluent (100 g COD/L), respectively in batch systems have been reported [10]. The maximum HPR was obtained in CSTR system using condensed molasses fermentation solubles wastewater (40 g COD/L) as feedstock at a HRT of 3 h and an OLR of 320 g COD/L/d [24]. In contrary to HPR, it has been observed that at high OLR there is a decrease in HY.…”

Bioenergy Production from Bamboo: Potential Source from Malaysia’s Perspective

“…The biogas produced in anaerobic digestion is mainly CH4, CO2, and a small amount of hydrogen (Nurliyana et al 2015). Biohydrogen production from lignocellulosic biomass via dark fermentation by hydrogen-producing anaerobic microorganisms is attracting increasing attention (Lay et al 2010;Hallenbeck and Ghosh 2012) due to the low pollutant emissions and high-value products associated with this approach. Hydrogen has a high energy content by mass basis (lower heating value of 120 MJ/kg) compared to that of CH4 (50 MJ/kg), while the energy content by volume basis (10.8 MJ/Nm 3 ) is less than one third of CH4 (35.9 MJ/Nm 3 ) (Balat 2008).…”

Fermentative Hydrogen Production by Molasses; Effect of Hydraulic Retention Time, Organic Loading Rate and Microbial Dynamics

“…In a semi-scale reactor operated at HRT of 0.25 d and pH 4.5 hydrogen yield up to 1.86 mol H2/mol hexose was achieved (Ren et al, 2006). Lay et al (2010) , 2008). It is obvious that the process can be further optimized.…”