Practical considerations for a simple ethanol concentration from a fermentation broth via a single adsorptive process using molecular-sieving carbon

Practical considerations for a simple ethanol concentration from a fermentation broth via a... A simple ethanol concentration process composed of a simple adsorptive apparatus using a single adsorbent, i.e., molecular-sieving carbon (MSC), is proposed for small-scale bioethanol production. The process designed to comprise pre-concentration of ethanol through gaseous-phase adsorption onto MSC and selective dehydration driven by molecular-sieving during desorption was tested under various conditions. Among the candidate adsorbents, MSC 5A showed the highest maximum ethanol adsorption capacity (0.163 g g−1). It was confirmed that the adsorption temperature and the initial ethanol concentration in the broth are crucial factors for the adsorption stage. For the desorption stage, the water recovery temperature significantly affected the final ethanol concentration and the ethanol recovery. As a practical option for the application of the proposed system, sequential batch fermentation and ethanol recovery was successfully demonstrated. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Renewable Energy Elsevier

Practical considerations for a simple ethanol concentration from a fermentation broth via a single adsorptive process using molecular-sieving carbon

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0960-1481
eISSN
1879-0682
D.O.I.
10.1016/j.renene.2017.11.019
Publisher site
See Article on Publisher Site

Abstract

A simple ethanol concentration process composed of a simple adsorptive apparatus using a single adsorbent, i.e., molecular-sieving carbon (MSC), is proposed for small-scale bioethanol production. The process designed to comprise pre-concentration of ethanol through gaseous-phase adsorption onto MSC and selective dehydration driven by molecular-sieving during desorption was tested under various conditions. Among the candidate adsorbents, MSC 5A showed the highest maximum ethanol adsorption capacity (0.163 g g−1). It was confirmed that the adsorption temperature and the initial ethanol concentration in the broth are crucial factors for the adsorption stage. For the desorption stage, the water recovery temperature significantly affected the final ethanol concentration and the ethanol recovery. As a practical option for the application of the proposed system, sequential batch fermentation and ethanol recovery was successfully demonstrated.

Journal

Renewable EnergyElsevier

Published: Apr 1, 2018

References

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