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Reutilization of carbon sources through sugar recovery from waste rice straw

Author

Listed:
  • Kim, Sung Bong
  • Kim, Eunji
  • Yoo, Hah Young
  • Kang, Minsu
  • Kang, Seong Woo
  • Park, Chulhwan
  • Kim, Jun Seok
  • Kim, Seung Wook

Abstract

Rice straw was utilized for the cultivation of Phanerochaete chrysoporium to produce cellobiose dehydrogenase. The composition of the rice straw after fermentation was found to be 28.77% glucan, 19.05% xylan and 54.81% other lignin containing sugars. The glucan and xylan content decreased due to the consumption of glucan and xylan by P. chrysoporium. After fermentation, the rice straw waste was subjected to chemical pretreatment to remove lignin. The effect of dilute acid pretreatment was not notable because of the glucose loss. However, when the rice straw after fermentation was treated with aqueous ammonia, the composition changed to 44.73% glucan, 25.43% xylan and 29.52% other lignin containing sugars. The aqueous ammonia pretreatment was optimized and an ammonia concentration, reaction time and temperature of 20%, 6 h and 60 °C, respectively, were determined to be the optimal pretreatment conditions After removal of lignin, the initial reaction rate was increased to 0.009583 g/L s, which was about 3 fold higher than the rice straw after fermentation. X-ray diffractometry was performed to investigate the crystallinity index, and the XRD results showed that biological treatment and the combination of both biological treatment and chemical pretreatment decreased the crystallinity index.

Suggested Citation

  • Kim, Sung Bong & Kim, Eunji & Yoo, Hah Young & Kang, Minsu & Kang, Seong Woo & Park, Chulhwan & Kim, Jun Seok & Kim, Seung Wook, 2013. "Reutilization of carbon sources through sugar recovery from waste rice straw," Renewable Energy, Elsevier, vol. 53(C), pages 43-48.
    • Handle: RePEc:eee:renene:v:53:y:2013:i:c:p:43-48
    DOI: 10.1016/j.renene.2012.11.002
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    Cited by:

    1. Yang, Xiaoguang & Choi, Han Suk & Park, Chulhwan & Kim, Seung Wook, 2015. "Current states and prospects of organic waste utilization for biorefineries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 335-349.

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