Effects of pretreatment methods on solubilization of beet-pulp and bio-hydrogen production yield

Ozkan, Leyla
Bayramoğlu, Tuba Hande
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 H-2/g COD was observed in reactor which contained alkaline pretreated beet-pulp. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

Citation Formats
L. Ozkan, T. H. Bayramoğlu, and G. N. DEMİRER, “Effects of pretreatment methods on solubilization of beet-pulp and bio-hydrogen production yield,” INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 36, no. 1, pp. 382–389, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41221.