>Keith, > >Do you have any references on making 3A dessicants from these renewable >resources? > >Ehren
Hello Ehren References of a kind, not a very useful kind: an abstract of work done with rice hulls at Universiti Sains Malaysia, but I can't find the paper anywhere, nor the people, and a Japanese prof who patented a process and started a company on the strength of it. I want to talk to him, but I haven't got round to it yet, nor done a patent search. If you'd like to try that in the meantime: http://www1.ipdl.jpo.go.jp/PA1/cgi-bin/PA1INIT Searching PAJ Patent Abstracts of Japan Japan Patent Office (English) http://www.jpo-miti.go.jp/index.htm Please let us know if you find anything. Regards Keith > >>> [EMAIL PROTECTED] 08/27/02 01:00AM >>> > > > > > > > >Place the ethanol in a container like a 30 gal RubberMaid > >trash can. Add > > >> >1/4 bag Portland cement, mix well, let settle, after 24 hrs, >mix > > >>it all back > > >> >up, let settle again. Without disturbing the sedament, remove >the > > >>alcohol to > > >> >just above the lime. The lime in the can combines with the > >water and gets > > >> >solid (clumping). After it sets up, it can be removed from the > >can, leaving > > >> >unreacted lime to be mixed with the next batch of ethanol, > >with more added > > >> >as nessasary. A simple micron filter to remove any last lime, >from the > > >> >alcohol would be all that was needed. > > >> > > > >> >Anyone have any thoughts on it? > > >> > > >> > > >>Great idea -- I'd thought of Plaster of Paris, but haven't tried >it. Cement > > >>sounds good too -- have you done it, and can you really "peel off" >a layer > > > >of solidified cement, exposing dry powder for reuse? > > > >Yeah, I messed around with all of 'em. Lime, of course, is great. >Portland > >cement really doesn't have any free lime in it -- it's a mixture of >calcium > >aluminum silicates. It binds with water, but not as much as quicklime, >which > >itself is not nearly as efficient as 3A zeolite sieve. Plaster of > >Paris is even > >worse -- hydration consists of one molecule of water for every two >molecules > >of calcium sulfate. In addition, all of these hold a fair amount of > >ethanol in the > >powder (so does sieve). > >Thanks Ken. I tried Plaster of Paris, it was certainly worse. >Quicklime or 3A, I don't think we need any other answers. Although, >there is interesting work making 3A out of various biomass wastes - >rice hull in Malaysia, kitchen garbage in Japan. From locally >available, renewable resources - 3A as appropriate technology? It's >interesting. But anyway it's not very expensive and it lasts. >Co-generation's the way to regenerate it I guess. > >Regards > >Keith ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/MVfIAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ 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/
