TY - JOUR
T1 - Optimization of batch dilute-acid hydrolysis for biohydrogen production from red algal biomass
AU - Park, Jeong Hoon
AU - Cheon, Hyo Chang
AU - Yoon, Jeong Jun
AU - Park, Hee Deung
AU - Kim, Sang Hyoun
N1 - Funding Information:
This work was supported by Basic Science Research Program though the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MOST) ( 2011-0014666 ), a Korea University grant (to H.-D. Park) and a grant (09-FN-1-0014) from Korea Institute of Energy Technology Evaluation and Planning, Ministry of Knowledge Economy, Republic of Korea.
PY - 2013/5/10
Y1 - 2013/5/10
N2 - Marine algae are promising alternative sources for bioenergy including hydrogen. Their polymeric structure, however, requires a pretreatment such as dilute-acid hydrolysis prior to fermentation. This study aimed to optimize the control variables of batch dilute-acid hydrolysis for dark hydrogen fermentation of algal biomass. The powder of Gelidium amansii was hydrolyzed at temperatures of 120-180 °C, solid/liquid (S/L) ratios of 5-15% (w/v), and H 2SO4 concentrations of 0.5-1.5% (w/w), and then fed to batch hydrogen fermentation. Among the three control variables, hydrolysis temperature was the most significant for hydrogen production as well as for hydrolysis efficiency. The maximum hydrogen production performance of 0.51 L H2/L/hr and 37.0 mL H2/g dry biomass was found at 161-164 °C hydrolysis temperature, 12.7-14.1% S/L ratio, and 0.50% H 2SO4. The optimized dilute-acid hydrolysis would enhance the feasibility of the red algal biomass as a suitable substrate for hydrogen fermentation.
AB - Marine algae are promising alternative sources for bioenergy including hydrogen. Their polymeric structure, however, requires a pretreatment such as dilute-acid hydrolysis prior to fermentation. This study aimed to optimize the control variables of batch dilute-acid hydrolysis for dark hydrogen fermentation of algal biomass. The powder of Gelidium amansii was hydrolyzed at temperatures of 120-180 °C, solid/liquid (S/L) ratios of 5-15% (w/v), and H 2SO4 concentrations of 0.5-1.5% (w/w), and then fed to batch hydrogen fermentation. Among the three control variables, hydrolysis temperature was the most significant for hydrogen production as well as for hydrolysis efficiency. The maximum hydrogen production performance of 0.51 L H2/L/hr and 37.0 mL H2/g dry biomass was found at 161-164 °C hydrolysis temperature, 12.7-14.1% S/L ratio, and 0.50% H 2SO4. The optimized dilute-acid hydrolysis would enhance the feasibility of the red algal biomass as a suitable substrate for hydrogen fermentation.
KW - Dark hydrogen fermentation
KW - Dilute-acid hydrolysis
KW - Hydrolysis temperature
KW - Marine algal biomass
KW - Solid/liquid ratio (S/L ratio)
KW - Sulfuric acid concentration
UR - http://www.scopus.com/inward/record.url?scp=84876736754&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2013.01.050
DO - 10.1016/j.ijhydene.2013.01.050
M3 - Article
AN - SCOPUS:84876736754
SN - 0360-3199
VL - 38
SP - 6130
EP - 6136
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 14
ER -
