I just received info from a company called Zeochem. The 3A zeolite will trap 18-20% of it's weight in water. I haven't had time to calculate how much zeolite is needed to adsorb the water from a gallon of 95.6% ethanol. The neat thing is zeolite can be heated after use to about 400 F to remove the trapped water. They say if done properly the zeolite could last as long as 30 months. I still do not have the exact process used or the cost of the zeolite. Still looking and listening. Ron Miller ----- Original Message ----- From: ronald miller sr <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Thursday, June 07, 2001 7:30 PM Subject: Re: [biofuel] zeolite
> Hi Martin, > Thanks for the info. I have not received any info yet from companies I > written to as to how much zeolite cost. As soon as I find out I will post it > on this web. Good luck to you with your final exam. > Ron > ----- Original Message ----- > From: Martin Klingensmith <[EMAIL PROTECTED]> > To: <biofuel@yahoogroups.com> > Sent: Thursday, June 07, 2001 4:54 PM > Subject: Re: [biofuel] zeolite > > > > Molar mass of CH3CH2OH = ~46g > > Molar mass of H20 = ~33g > > > > Assuming you have 100 pounds of ethanol at 90%, you > > have around 9 pounds of water in there. Eight pounds > > of water being 30% [conservative figure] means 100% of > > the zeolite would be 25 pounds. [This was done in my > > head and it's probably erroneous by at least 10%] > > Not bad if zeolite is what I think it is, it can be > > dryed/reused. > > How much does your zeolite cost? > > -Martin Klingensmith > > [high school student, chemistry final is next week :)] > > --- ronald miller sr <[EMAIL PROTECTED]> wrote: > > > According to companies who are listed on the web, > > > zeolite 3A will absorb 30 > > > to 40% of its weight in water. I have read that 3A > > > stands for 3 > > > angstrums(spelling) and as I understand water > > > molecues are bigger than that, > > > it also will allow ethanol to pass right through but > > > trapping the water. > > > But, how much zeolite do you need to filter a gallon > > > of ethanol to make it > > > anhydrous. I don't know. Maybe one of our chemistry > > > majors can help us with > > > that. Anyone? > > > Regards, > > > Ron Miller > > > ----- Original Message ----- > > > From: Martin Klingensmith <[EMAIL PROTECTED]> > > > To: <biofuel@yahoogroups.com> > > > Sent: Wednesday, June 06, 2001 5:50 PM > > > Subject: Re: [biofuel] zeolite > > > > > > > > > > Use molecular sieves to absorb water from > > > > ethanol/methanol. > > > > That's what they're made for and they're > > > > reusable/nontoxic. > > > > > > > > --- Ken Provost <[EMAIL PROTECTED]> wrote: > > > > > >Do you have any idea how much zeolite cost? I > > > don't > > > > > have a > > > > > >clue. > > > > > >Thanks for writing. > > > > > >Ron Miller > > > > > > > > > > > > > > > According to the web source Keith provided, it's > > > > > about $10 per pound, > > > > > but I was quoted that much for silica gel, so it > > > > > might be more now. > > > > > BTW, the same source says only 10% of its weight > > > in > > > > > absorbed water, not > > > > > the 25% I mentioned. Sounds low....silica gel is > > > > > good up to 40% of its weight, > > > > > but it's not very selective -- may absorb > > > ethanol > > > > > nearly as much as water. > > > > > Does anyone know? -K > > > > > > > > > > > > > > > > > __________________________________________________ > > > > Do You Yahoo!? > > > > Get personalized email addresses from Yahoo! Mail > > > - only $35 > > > > a year! http://personal.mail.yahoo.com/ > > > > > > > > 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/ > > > > > > > > > > > > > > > > > > > > __________________________________________________ > > Do You Yahoo!? > > Get personalized email addresses from Yahoo! Mail - only $35 > > a year! http://personal.mail.yahoo.com/ > > > > 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/ > > > > > > > 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/ > > 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/
