화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.6, 4022-4027, November, 2014
DOI10.1016/j.jiec.2014.01.001  Export Citation
Porosity changes during packed bed solid-state fermentation
A. Karimi, S.A. Shojaosadati†, P. Hejazi, E. Vasheghani-Farahani, and M. Hashemi1
  • Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University, PO Box 14115-143 Tehran, Iran
  • 1Department of Microbial Biotechnology & Biosafety, Agricultural Biotechnology Research Institute of Iran (ABRII), Karaj, Iran
E-mail:
Porosity is one of the key parameters in a typical solid-state fermentationmodel that represents the intra and inter-particle void spaces in bioreactor bed. In this research, the particle density and moisture content of the bed were used to determine the porosity changes of the solid substrate bed during the fermentation of Aspergillus niger in a laboratory scale packed-bed bioreactor. Biomass growth was also monitored by means of measuring CO2 and O2 in the bioreactors outlet gas online. As such, an experimental relationship between humidity and porosity has been developed and can be used in solidstate fermentation modeling.
Keywords:Aspergillus niger;Laboratory scale packed-bed bioreactor;Particle density;Solid-state fermentation;Porosity
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