Patents Assigned to The Board of Trustees of the University of Little Rock Arkansas
  • Process for extracting ethanol from fermentation broths for direct blending into gasoline while preserving the broth for recycling
    Patent number: 5110319
    Abstract: A method of producing ethanol from a fermentation source for direct blending into gasoline to form gasohol is provided by extracting ethanol from the fermentation broth with a non-toxic solvent compatible with gasoline. The invention includes extraction outside of the fermentor and the recycling of the extracted broth back to the fermentor. An extracting column is used for the extraction and recycling and the extract can be dried before blending it with the gasoline. The preferred solvent is an alkylate.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: May 5, 1992
    Assignee: The Board of Trustees of the University of Little Rock Arkansas
    Inventors: Jim L. Turpin, Robert B. Eldridge, Sharon Booth-McGee