Dear Mr Steven & Helen Hobbs please see below: http://home.earthlink.net/~galiagante/house-biofuel.html III. 3. b. Step Two: Vegetable Oil and Sodium Methoxide
Vegetable oil is primarily made of triglycerine with small amounts of assorted other compounds including trace elements, fatty acids and stray proteins that may have slipped through during the extraction process. Virgin vegetable oils can have carbon chains as short 18 points. Waste Oils (such as used cooking oils) can have carbon chains as long as 32 point after repeated heatings and coolings. By comparison, petro diesel has a carbon chain of between 11 and 13 points. The transesterification process "breaks" the triglycerine carbon chains into something that more closely resembles diesel. Breaking triglycerine means adding sodium hydroxide at a ratio of 3.5 grams per liter of pure triglycerine in the presence of a suitable solvent. As pure triglycerine is basically never found, remember that properly testing your oil feedstocks is very important (see Titration Testing, above). I am trying to get more information on our question rgds rpsharma >From: Steven & Helen Hobbs <[EMAIL PROTECTED]> >Reply-To: biofuels-biz@yahoogroups.com >To: biofuels-biz@yahoogroups.com >Subject: Re: [biofuels-biz] Help! >Date: Mon, 02 Sep 2002 00:13:31 +1000 > >Dear Rajendra >I found it interesting that you mention on esterification that the chain >length >is broken from C18 or more down to a chain length of C11 - C13. >Can such a difference be due to the variety of oil that is selected? The >reason >I ask is that I have been making BD from cold pressed virgin Canola oil, >and I >had a GC fatty acid analysis performed on my BD and the results were; >C16:0 -C18:0-C18:1-C18:2-C18:3-C20:0-C20:1-C22:0 > 3.9 - 4.83 - 80.54- 9.29- 0.00 -0.37 - 0.00 - 1.07 >The GC fatty acid composition dosn't show chain lengths as short as what >you >mention, but 98.56% of chain lengths are C18:2 or shorter. >I would appreciate your comments. >Regards >Steven > >Rajendra Sharma wrote: > > > Kavitha > > obviously your professor is not fully informed. > > Virgin oil and for that matter the waste oil has long carbon chains- 18 >or > > so but on esterification these chains are broken down to 11 - 13, very > > similar to that in diesel. Due to about 11% oxygenates avialble in > > biodiesel( which is defined as mono ethyl or methyl ester ). > > we are doing work on prodcution of biodiesel from non-food plant seeds, >have > > tested it in engines and confirmed the emissoin advantages of biodiesel. > > now I am working on preparing a Indian standard for biodiesel. > > if you are near bombay you can talk to me for more details. I am in >nasik at > > mahindra & mahindra ltd > > cc:Samai Jaiin - can you send me tha national standard for biodiesel >and > > also copy of your paper mentioned below > > rgds > > > > >From: Samai Jaiin <[EMAIL PROTECTED]> > > >Reply-To: biofuels-biz@yahoogroups.com > > >To: biofuels-biz@yahoogroups.com > > >Subject: Re: [biofuels-biz] Help! > > >Date: Sat, 31 Aug 2002 12:46:25 +0100 (BST) > > > > _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx ------------------------ Yahoo! Groups Sponsor ---------------------~--> 4 DVDs Free +s&p Join Now http://us.click.yahoo.com/pt6YBB/NXiEAA/MVfIAA/9bTolB/TM ---------------------------------------------------------------------~-> Biofuels at Journey to Forever http://journeytoforever.org/biofuel.html Biofuel at WebConX http://www.webconx.dns2go.com/2000/biofuel/biofuel.htm List messages are archived at the Info-Archive at NNYTech: http://archive.nnytech.net/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
