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Related Experiment Video

Updated: Jul 4, 2026

Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol

Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol

Published on: October 24, 2016

Eeconomic evaluation of alternative ethanol fermentation processes.

B L Maiorella¹, H W Blanch, C R Wilke

¹Lawrence Berkeley Laboratory and Department of Chemical Engineering, University of California, Berkeley, California 94720.

Biotechnology and Bioengineering

|September 1, 1984

Summary

This summary is machine-generated.

This study compares eleven ethanol production fermentation schemes using a consistent yeast metabolism model. It analyzes costs for both molasses and cellulose hydrolyzate feeds, identifying optimal plant designs for efficient bioethanol generation.

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Area of Science:

Biotechnology and Bioengineering
Chemical Engineering
Sustainable Energy

Background:

Ethanol production is crucial for biofuels and chemical industries.
Optimizing fermentation processes is key to improving efficiency and reducing costs.
Various advanced fermentation techniques aim to overcome limitations of conventional methods.

Purpose of the Study:

To compare eleven distinct fermentation schemes for bioethanol production.
To evaluate the economic viability of different ethanol production strategies.
To design and project costs for optimized ethanol plants using various feedstocks.

Main Methods:

Comparative analysis of eleven fermentation schemes: batch, continuous, cell recycle, immobilized cell, membrane, extraction, and vacuum processes.
Utilized a consistent mathematical model for yeast metabolism.
Considered two primary feedstocks: molasses and cellulose hydrolyzate.
Designed optimized plant configurations including feed preparation, fermentation, and product recovery.

Main Results:

Projected total costs for optimized ethanol plants across different fermentation schemes and feedstocks.
Identified key performance indicators and economic factors influencing process selection.
Demonstrated the impact of feedstock type and fermentation technology on overall production costs.

Conclusions:

The choice of fermentation scheme significantly impacts the economics of ethanol production.
Advanced separation techniques can enhance ethanol recovery and process efficiency.
Cost-effective bioethanol production is achievable through optimized plant design and feedstock selection.