TY - JOUR
T1 - Effects of pretreatment methods on solubilization of beet-pulp and bio-hydrogen production yield
AU - Ozkan, Leyla
AU - Erguder, Tuba H.
AU - Demirer, Goksel N.
N1 - Funding Information:
The authors gratefully acknowledge financial support by the Scientific and Technological Research Council of Turkey through Grant Number 104I127 .
PY - 2011/1
Y1 - 2011/1
N2 - Sugar processing wastewater and beet-pulp are two major waste streams of sugar-beet processing plants. Contrary to wastewater, beet-pulp is generally used as animal feed in cattle-raising industry. However, it can serve as a substrate for bio-hydrogen production which corresponds to a higher valorization of beet-pulp. Moreover, pretreatment of lignocellulosic materials like beet-pulp is needed in order to improve overall energy efficiency and enable economic feasibility of bio-hydrogen production. Therefore, the effect pretreatment methods (alkaline, thermal, microwave, thermal-alkaline and microwave-alkaline) on bio-hydrogen production from sugar beet-pulp through dark fermentation were investigated in this study. Reactors pretreated with alkaline, microwave-alkaline and thermal-alkaline methods yielded significant solubilization of beet-pulp compared to others. Therefore, in the second phase of the study, they were used to pretreat the beet-pulp which was then subjected to dark fermentation for bio-hydrogen production. Maximum bio-hydrogen production yield of 115.6 mL H2/g COD was observed in reactor which contained alkaline pretreated beet-pulp.
AB - Sugar processing wastewater and beet-pulp are two major waste streams of sugar-beet processing plants. Contrary to wastewater, beet-pulp is generally used as animal feed in cattle-raising industry. However, it can serve as a substrate for bio-hydrogen production which corresponds to a higher valorization of beet-pulp. Moreover, pretreatment of lignocellulosic materials like beet-pulp is needed in order to improve overall energy efficiency and enable economic feasibility of bio-hydrogen production. Therefore, the effect pretreatment methods (alkaline, thermal, microwave, thermal-alkaline and microwave-alkaline) on bio-hydrogen production from sugar beet-pulp through dark fermentation were investigated in this study. Reactors pretreated with alkaline, microwave-alkaline and thermal-alkaline methods yielded significant solubilization of beet-pulp compared to others. Therefore, in the second phase of the study, they were used to pretreat the beet-pulp which was then subjected to dark fermentation for bio-hydrogen production. Maximum bio-hydrogen production yield of 115.6 mL H2/g COD was observed in reactor which contained alkaline pretreated beet-pulp.
KW - Anaerobic digestion
KW - Bio-hydrogen
KW - Pretreatment
KW - Sugar-beet processing wastes
UR - http://www.scopus.com/inward/record.url?scp=79251638160&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2010.10.006
DO - 10.1016/j.ijhydene.2010.10.006
M3 - Article
AN - SCOPUS:79251638160
SN - 0360-3199
VL - 36
SP - 382
EP - 389
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 1
ER -