Steady-State Simulation of the Strip-Flash Ethanol Fermentation Process

2012 ◽  
Vol 557-559 ◽  
pp. 2151-2154
Author(s):  
Zhen Liu ◽  
Qing Hui Chang
Keyword(s):  
Steady State ◽  
Liquid Phase ◽  
Ethanol Fermentation ◽  
Fermentation Process ◽  
Inhibitory Process ◽  
Gas Stripping ◽  
Gas Flux ◽  
Steady State Simulation ◽  
Ethanol Removal

The conventional ethanol fermentaion is a typical inhibitory process, leading to low productivity and yield. A new ethanol fermentation process coupled with gas stripping and vacuum flash, named as strip-flash fermentation, is proposed. The process is provided with the advantages of both stripping fermentation and flash fermentation, and improves the ethanol productivity by increasing the in-situ ethanol removal. And a model of flash-strip fermentation process was established. The theoretically analyses indicate that increasing gas flux and liquid phase recycling ratio can help to enhance productivity and yield of strip-flash fermentation process, and comparison to striping fermentation or flash fermentation, flash-strip fermentation has shown a better productivity. The results has also shown the possibilities of further application and optimization of this process.

scholarly journals Bioprocess intensification for acetone-butanol-ethanol fermentation from brewer's spent grain: Fed-batch strategies coupled with in-situ gas stripping

2022 ◽  
Vol 156 ◽  
pp. 106327
Author(s):  
Pedro E. Plaza ◽  
Mónica Coca ◽  
Susana Lucas Yagüe ◽  
Gloria Gutiérrez ◽  
Eloísa Rochón ◽  
...  
Keyword(s):  
Ethanol Fermentation ◽  
Gas Stripping ◽  
Fed Batch ◽  
Brewer’S Spent Grain ◽  
Spent Grain ◽  
Acetone Butanol Ethanol

scholarly journals In-Situ Vacuum Assisted Gas Stripping Recovery System for Ethanol Removal from a Column Bioreactor

Fibers ◽  
2018 ◽  
Vol 6 (4) ◽  
pp. 88
Author(s):  
Martina Andlar ◽  
Damir Oros ◽  
Tonči Rezić ◽  
Roland Ludwig ◽  
Božidar Šantek
Keyword(s):  
Statistical Analysis ◽  
Ethanol Production ◽  
Gas Stripping ◽  
Biomass Hydrolysis ◽  
Solids Concentration ◽  
Recovery System ◽  
Beet Pulp ◽  
Major Factors ◽  
Ethanol Removal

A three-step process consisting of biomass hydrolysis, fermentation and in-situ gas stripping by a vacuum assisted recovery system, was optimized to increase the ethanol production from sugar beet pulp. The process combines the advantages of stripping and vacuum separation and enhances the fermentation productivity through in-situ ethanol removal. Using the design of experiment and response surface methodology, the effect of major factors in the process, such as pressure, recycling ratio and solids concentration, was tested to efficiently remove ethanol after the combined hydrolysis and fermentation step. Statistical analysis indicates that a decreased pressure rate and an increased liquid phase recycling ratio enhance the productivity and the yield of the strip-vacuum fermentation process. The results also highlight further possibilities of this process to improve integrated bioethanol production processes. According to the statistical analysis, ethanol production is strongly influenced by recycling ratio and vacuum ratio. Mathematical models that were established for description of investigated processes can be used for the optimization of the ethanol production.

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