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A much cheaper method to separate ethanol after solid-state fermentation process in renewable energy production

Author

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  • Zhou, Jing-Zhi
  • Feng, Jun-Xiao
  • Xu, Qian
  • Zhao, Yu-Jie

Abstract

Planar Thermal Source (PTS) was used to separate ethanol from Solid-State Fermented crushed straw Material (SSFM) instead of the traditional separation method of water steam in Advanced Solid-State Fermentation technology (ASSF). Complete thermo gravimetric test was done on prepared material to study the mass change rules under heating of PTS. Factors considered were temperature of PTS (T, 20–100 °C), wet content of material (θ, 0.1–0.9), ethanol concentration in wet of material (ω, 0.03–0.11). The weight order of factors on material mass change speed V was T > θ > ω, and ω can be ignored for that was an order of magnitude less important than θ and T. V linearly increases with higher T, increases by power function with higher θ. V model with T and θ was regressed. As ethanol separating from SSFM can be considered as ethanol evaporating from ethanol solution, ethanol solution evaporation model was derived. Above all, model of ethanol separation from SSFM by PTS was derived. The cost model was added. Software was programmed to calculate the separation process and its cost. The method will promote the ASSF technology to produce fuel ethanol. The study can also be reference on drying process of other crushed plant material.

Suggested Citation

  • Zhou, Jing-Zhi & Feng, Jun-Xiao & Xu, Qian & Zhao, Yu-Jie, 2018. "A much cheaper method to separate ethanol after solid-state fermentation process in renewable energy production," Renewable Energy, Elsevier, vol. 123(C), pages 675-682.
    • Handle: RePEc:eee:renene:v:123:y:2018:i:c:p:675-682
    DOI: 10.1016/j.renene.2018.02.052
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    References listed on IDEAS

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    1. Chen, Xiaoguang, 2016. "Economic potential of biomass supply from crop residues in China," Applied Energy, Elsevier, vol. 166(C), pages 141-149.
    2. Li, Shizhong & Li, Guangming & Zhang, Lei & Zhou, Zhixing & Han, Bing & Hou, Wenhui & Wang, Jingbing & Li, Tiancheng, 2013. "A demonstration study of ethanol production from sweet sorghum stems with advanced solid state fermentation technology," Applied Energy, Elsevier, vol. 102(C), pages 260-265.
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