A Novel, Low-Energy Stripper-Membrane Hybrid Process for Bioethanol Production

Award Information
Agency: Department of Agriculture
Branch: N/A
Contract: 2007-33610-17987
Agency Tracking Number: 2007-00502
Amount: $79,998.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Membrane Technology and Research, Inc.
1360 Willow Road, #103, Menlo Park, CA, 94025
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Yu Huang
 (650) 543-3354
Business Contact
 Elizabeth Weiss
Title: Government Contracts/Grants Mgr.
Phone: (650) 543-3378
Email: egweiss@mtrinc.com
Research Institution
"Demand for ethanol as a gasoline supplement is surging. Just over 100 U.S.corn-toethanol plants are currently operating, with almost 40 new plants slated for completion in the coming year. By 2012, 250 bioethanol plants are expected to be installed. The current fermentation-distillation-molecular sieve process for ethanol production uses up to 20% of the energy content of the ethanol separated. Therefore, development of a lower-energy ethanol separation process is of considerable interest to bioethanol plant operators. This proposal describes a novel hybrid stripper-membrane separation process that could lower energy consumption of ethanol production by 45%. Achieving this goal requires the development of membranes with high water permeance that can remove water from ethanol solutions containing 50 wt% water at 100-130°C. Current water-selective membranes cannot be used with ethanol solutions containing more than 15 wt% water because of hydrolytic stability issues and excessive swelling. We have had preliminary success in developing the required membranes. Availability of these membranes would make radical changes to bioethanol separation flow schemes possible The objective of this program is to demonstrate membrane performance under simulated operating conditions, determine process feasibility, and set targets for pilot-scale development in a Phase II project."

* information listed above is at the time of submission.

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