Fermentative hydrogen production from molasses wastewater in a continuous mixed immobilized sludge reactor.
A novel continuous mixed immobilized sludge reactor (CMISR) containing activated carbon as support carrier was used for fermentative hydrogen production from molasses wastewater. When the CMISR system operated at the conditions of influent COD of 2000-6000mg/L, hydraulic retention time (HRT) of 6h and temperature of 35°C, stable ethanol type fermentation was formed after 40days operation. The H(2) content in biogas and chemical oxygen demand (COD) removal were estimated to be 46.6% and 13%, respectively. The effects of organic loading rates (OLRs) on the CMISR hydrogen production system were also investigated. It was found that the maximum hydrogen production rate of 12.51mmol/hL was obtained at OLR of 32kg/m(3)d and the maximum hydrogen yield by substrate consumed of 130.57mmol/mol happened at OLR of 16kg/m(3)d. Therefore, the continuous mixed immobilized sludge reactor (CMISR) could be a promising immobilized system for fermentative hydrogen production.
School of Forestry, Northeast Forestry University, Harbin 150040, China.
Wei
W
Han
Bing
B
Wang
Yan
Y
Zhou
De-Xin
DX
Wang
Yan
Y
Wang
Li-Ran
LR
Yue
Yong-Feng
YF
Li
Nan-Qi
NQ
Ren
D019149:Bioreactors; D005285:Fermentation; D006859:Hydrogen / Q000378:metabolism*; D008965:Molasses; D012722:Sewage
D012722:Sewage; D006859:Hydrogen