>Which is the better process route to achieve dehydrated ethanol from >fermented broth? Extractive distillation? Azeotropic distillation with an >entrainer? Molecular sieves? Prevapoation with membranes? All seem >viable but what are the financial benefits for selecting each route?
>Andy Thomson Out of that list, I'd probably say pervaporation through an appropriate membrane would be the most elegant, the most benign, and probably the cheapest to operate, though maybe not the cheapest in capital equipment. For garage cookery (i.e., developing nations), the molecular sieve is very reasonable, especially if you could regenerate the sieve in a solar concentrator. Extractive/azeoptropic distillation would be the hardest and nastiest, but maybe the cheapest. ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get your FREE credit report with a FREE CreditCheck Monitoring Service trial http://us.click.yahoo.com/ACHqaB/bQ8CAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
