Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7724381 | International Journal of Hydrogen Energy | 2011 | 9 Pages |
Abstract
Rice straw was pretreated by microwave-assisted alkali to improve saccharification in enzymatic hydrolysis and hydrogen yield in combined dark- and photo-fermentation in this paper. A maximum reducing sugar yield of 69.3 g/100 g TVS was obtained when 50 g/l rice straw was pretreated by microwave heating for 15 min at 140 °C in 0.5% NaOH solution and then enzymatically hydrolyzed for 96 h. When hydrolyzed rice straw was used for hydrogen production by anaerobic bacteria in dark-fermentation, a maximum hydrogen yield of 155 ml/g TVS was obtained. The residual solution (mainly acetate and butyrate) from dark-fermentation was reutilized for hydrogen production by immobilized photosynthetic bacteria in photo-fermentation. By combination of dark- and photo-fermentation, the maximum hydrogen yield was greatly enhanced to 463 ml/g TVS, which is 43.2% of the theoretical hydrogen yield.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Jun Cheng, Huibo Su, Junhu Zhou, Wenlu Song, Kefa Cen,