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Energies 2014, 7(7), 4087-4097; doi:10.3390/en7074087
Article

New Approach to Fuelization of Herbaceous Lignocelluloses through Simultaneous Saccharification and Fermentation Followed by Photocatalytic Reforming

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Received: 1 May 2014; in revised form: 13 June 2014 / Accepted: 19 June 2014 / Published: 26 June 2014
(This article belongs to the Special Issue Advances and Challenges in Cellulosic Ethanol)
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Abstract: Bio-fuelization of herbaceous lignocelluloses through a simultaneous saccharification and fermentation process (SSF) and photocatalytic reforming (photo-Reform) was examined. The SSF of the alkali-pretreated bamboo, rice straw, and silvergrass was performed in an acetate buffer (pH 5.0) using cellulase, xylanase, and Saccharomyces cerevisiae at 34 °C. Ethanol was produced in 63%–85% yields, while xylose was produced in 74%–97% yields without being fermented because xylose cannot be fermented by S. cerevisiae. After the removal of ethanol from the aqueous SSF solution, the SSF solution was subjected to a photo-Reform step where xylose was transformed into hydrogen by a photocatalytic reaction using Pt-loaded TiO2 (2 wt % of Pt content) under irradiation by a high pressure mercury lamp. The photo-Reform process produced hydrogen in nearly a yield of ten theoretical equivalents to xylose. Total energy was recovered as ethanol and hydrogen whose combustion energy was 73.4%–91.1% of that of the alkali-pretreated lignocelluloses (holocellulose).
Keywords: bamboo; rice straw; silvergrass; cellulase; xylanase; simultaneous saccharification and fermentation (SSF); hydrogen-evolution; Pt-loaded TiO2 bamboo; rice straw; silvergrass; cellulase; xylanase; simultaneous saccharification and fermentation (SSF); hydrogen-evolution; Pt-loaded TiO2
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Yasuda, M.; Kurogi, R.; Tsumagari, H.; Shiragami, T.; Matsumoto, T. New Approach to Fuelization of Herbaceous Lignocelluloses through Simultaneous Saccharification and Fermentation Followed by Photocatalytic Reforming. Energies 2014, 7, 4087-4097.

AMA Style

Yasuda M, Kurogi R, Tsumagari H, Shiragami T, Matsumoto T. New Approach to Fuelization of Herbaceous Lignocelluloses through Simultaneous Saccharification and Fermentation Followed by Photocatalytic Reforming. Energies. 2014; 7(7):4087-4097.

Chicago/Turabian Style

Yasuda, Masahide; Kurogi, Ryo; Tsumagari, Hikaru; Shiragami, Tsutomu; Matsumoto, Tomoko. 2014. "New Approach to Fuelization of Herbaceous Lignocelluloses through Simultaneous Saccharification and Fermentation Followed by Photocatalytic Reforming." Energies 7, no. 7: 4087-4097.


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