Journal
RENEWABLE ENERGY
Volume 149, Issue -, Pages 287-297Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2019.12.025
Keywords
Biofuel production; Enzyme dose; Ethanol and Methane
Funding
- Project Management Unit of Akdeniz University, Turkey [FYL- 2017-2348, FBA- 2019-4752]
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The production of bioethanol and subsequent methane from two raw switchgrass varieties with the addition of cellulase and beta-glucosidase dose combinations was investigated in this study. Maximum ethanol production increment for the investigated varieties, Shawnee and Kanlow, were determined as 211.9% and 166.7%, respectively, compared to the control assays without enzymes. Considering higher ethanol production a priority, 42.0 mg EtOH/gVS and 223.5 mLCH(4)/gVS were produced from Shawnee variety at 50 EGU cellulase - 80 IU beta-glucosidase doses. 20.2 mgEtOH/gVS, and 400.7 mLCH(4)/gVS were produced from Kanlow variety at 75 EGU cellulase - 80 IU beta-Glucosidase doses. Furthermore, the highest total biofuel energy productions were found as 10750,9 MJ/tonne field dried switchgrass at 75 EGU cellulase - 20 IU beta-glucosidase doses for Shawnee and 13556,9 MJ/tonne field dried switchgrass at 75 EGU cellulase 80 IU beta-glucosidase doses for Kanlow. Shawnee variety was found to be more suitable for cellulosic ethanol production. (C) 2019 Elsevier Ltd. All rights reserved.
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