The aim of this work is to model the bioethanol production by wood degradation, and to check if there is mass transfer limitations in the reactions steps from the wood particles to the microorganisms due to the transferring of molecules that are involved in. Cellulose and xylan have been considered the only reactive components of wood to get simple sugars for cell fermentation. Lignin affects only the mass transfer through the wood particles. The effect of mass transfer are studied by modeling the reactions steps of two processes that could have future develop in lignocellulosic bioethanol production: process 1, a thermal auto hydrolysis of xylan followed by Simultaneous Saccharification and Co-Fermentation (SSCF) step; process 2, with a SSCF single reaction step, including enzymatic hydrolysis of both xylan and cellulose. The diffusive mass transfer of simple sugars produced by wood components degradation has been determined inside the wood and inside the microbial cell wall
Modelling of mass transfer during wood fermentation processes to produce bioalcohol
Spalluto, Giorgio
2011/2012
Abstract
The aim of this work is to model the bioethanol production by wood degradation, and to check if there is mass transfer limitations in the reactions steps from the wood particles to the microorganisms due to the transferring of molecules that are involved in. Cellulose and xylan have been considered the only reactive components of wood to get simple sugars for cell fermentation. Lignin affects only the mass transfer through the wood particles. The effect of mass transfer are studied by modeling the reactions steps of two processes that could have future develop in lignocellulosic bioethanol production: process 1, a thermal auto hydrolysis of xylan followed by Simultaneous Saccharification and Co-Fermentation (SSCF) step; process 2, with a SSCF single reaction step, including enzymatic hydrolysis of both xylan and cellulose. The diffusive mass transfer of simple sugars produced by wood components degradation has been determined inside the wood and inside the microbial cell wallFile | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/15797