Re: [biofuel] removing water from alcohol
You could do that. The metallic Potassium would react quicker (and safely) though you are right to avoid the metallic sodium. The other advantage of the metallic potassium is that it will react with the water as well as the alcohol. The end result is a mixture of KOH and CH3CH2OK. The potassium salt of the alcohol is even more potent than the KOH as a base. The reaction would generate hydrogen gas which could be captured and used elsewhere (or sold) and you would be able to determine an endpoint very easily (keep adding the metal until you have some metal in the bottom of the container, and all of your water is gone and your alcohol is now a very potent base). Then all you would need to do would be to add your vegetable oil and process it to biodiesel. You end up with ethyl-ester biodiesel, glycerine, and potassium hydroxide (fairly pure potassium hydroxide which could be used elsewhere). jmwelter wrote: Hey, I know many of you on the list as well as I have been trying to find ways to dry alcohol without using zeolites, etc... there has been the suggestion of using metallic potassium or sodium (very dangerous) but what I was thinking is that maybe using a K2O or Na2O (potassium or sodium oxide - not hydroxide) to consume the water? Since when left out in the open, the two oxides will absorb water to become KOH and NaOH respectively, why not use them to make KOH or NaOH in the solution? JEFF Yahoo! Groups Sponsor ADVERTISEMENT 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 the Yahoo! Terms of Service. [Non-text portions of this message have been removed] Yahoo! Groups Sponsor -~-- Buy Stock for $4. No Minimums. FREE Money 2002. http://us.click.yahoo.com/BgmYkB/VovDAA/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/
Re: [biofuel] vac distillation heat disposal
Why not set up a waste heat exchanger. That would allow you to recapture some of the heat needed for distillation to heat the next batch. mtushmoo wrote: Remember, Boiling requires heat to make it happen, even if it is occuring in a vacumn. The vacumn making the ethanol boil will absorb heat from the mix. That's the process that air conditioners work byor did you mean the heat in the condensor from the condensing vapors? Eric It's disposing of the heat after I've used it, that will be my shortcoming. I am trying to remove the heat disposal problem, by simply not putting the heat in to start with. I welcome any thoughts and commentary on my approach. Motie Yahoo! Groups Sponsor ADVERTISEMENT 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 the Yahoo! Terms of Service. 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/
Re: [biofuel] Re: ethanol distillation
You could use a Carbon dioxide scrubber to remove the CO2 and then still be able to use a vacuum for distillation. The House of Jade wrote: Well, you are now talking about vacuum fermentation for which there is a patented process. Stripping off ethanol as it is produced solves one problem but the problem is that the vacuum system must deal with the massive amounts of carbon dioxide being generated by the fermentation process; so vacuum fermentation of ethanol never got off the ground. Yes, it is possible to use a rather high vacuum to break the azeotrope and obtain 200 proof (absolute, anhydrous) ethanol. However, high vacuum distillation is best carried out in borosilicate glass, as metal stills are subject to crushing. A lot of ethanol will be wasted out the pump unless you have efficient cold trapping (usually acetone/dry ice slurry) with its own dangers. So, molecular sieves are easier and safer to render 96% ethanol anhydrous. Also bear in mind that anhydrous ethanol will very efficiently soak up moisture from the air and return to the azeotropic state, so to keep it dry, you must handle it using special atmosphere-excluding techniques. Hope this helps... _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp. Yahoo! Groups Sponsor ADVERTISEMENT 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 the Yahoo! Terms of Service. [Non-text portions of this message have been removed] 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/
