Craig, Biodiesel can be subject to algae buildup. But it also has a considerably long shelf life when treated properly. I haven't had the occasion or need to utilize a biocide as of yet. But about the time we start storing fuel in a 100 bbl tank you can bet the problem will begin to crop up.
We are considering picking up a high pressure washer that is biodiesel compatible to clean the tank prior to putting biodiesel in it. Between 1/2 and 3/4 of an inch of parafin, varnish and other junk clinging to the sides. Could use the same washer for cleaning the tanks of customers as well. The trick is how to handle the solid waste that comes off the sides. Chances are it could be adequately consumed in a used oil furnace or boiler, such as http://www.cleanburn.com/ These units also burn veg oil and come with a fuel tank pre-heater. Todd Swearingen ----- Original Message ----- From: craig reece To: biofuel@yahoogroups.com Sent: Thursday, April 18, 2002 6:36 PM Subject: Re: [biofuel] Shelf life Todd, It sounds like you're saying that veg oil is not subject to algae buildup? If not - that is, if it is subject to algae buildup, would something like Racor's Fuel Biocide work to prevent it? Thanks, Craig Appal Energy wrote: > Shelf life of veg oil is limitted by rancidity. Rancidity is not a > limitation of biodiesel, as infernal combustion is not affected by > "taste." > > With appropriate steps taken to prevent algal buildup, biodiesel > should have a tank life of years, depending upon the feedstock and air > volume in the storage tank. > > Some feedstocks, such as linseed oil and hemp seed oil will dry under > oxygenated conditions, such as an open tank or a tank with minimal > fuel and high volumes of air for long periods. > > Todd Swearingen > ----- Original Message ----- > From: MH > To: biofuel@yahoogroups.com > Sent: Thursday, April 18, 2002 12:13 PM > Subject: Re: [biofuel] Shelf life > > > MH wrote Thu, 07 Mar 2002 13:46:53 -0600: > > > > What is the shelve - shelf life of: > > . biodiesel - BD > > . straight vegetable oil - SVO > > . waste vegetable oil - WVO > > . diesel fuel > > at room temperature?? > > Thank you. > > To the best of my knowledge, or what I've learned so far, Steve > Spence > answered some of my questions with this post [Thank you Steve] > Subject: [biofuel] Small-scale Oilseed Production > Date: Sat, 30 Mar 2002 11:16:14 -0500 > http://www.attra.org/attra-pub/oilseed.html > > This publication describes the basic processes involved in > small-scale > oilseed processing. Included are a low-tech method for raw material > preparation using sunflower seeds as an example; information on > methods > and equipment used for oil extraction; and notes on clarification, > packaging, and storage. Sources for additional information and a > list of > suitable raw materials are provided. > ------ > > I've added the following quotes from the publication: > > "Use of clean, dry containers to package and store oils can help to > prevent rancidity. Sealed glass or plastic bottles are adequate. It > is > preferable if they are colored and kept in a dark box. The shelf > life of > oil can be expected to be 6-12 months if it is adequately packaged > and > kept away from heat and sunlight (1)." > > "However, unrefined vegetable oils are fragile, with limited shelf > life. > Therefore, some degree of refinement is necessary to ensure a usable > > product. All vegetable oils should be stored in a cool, dark area." > ------ > > > Would I be correct in assuming BioDiesel and Diesel fuel, > both having gone threw a refinement process, > would have a longer, but not much longer, shelf life than SVO ? > > WVO I'd guess would have a shorter shelf life then SVO due to > various > reasons such as microbes and water. > > Thank you in advance for any & all responses. > > 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 ADVERTISEMENT [Click Here!] > > 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 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 ---------------------~--> Kwick Pick opens locked car doors, front doors, drawers, briefcases, padlocks, and more. On sale now! http://us.click.yahoo.com/ehaLqB/Fg5DAA/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/
