----- Original Message ----- From: "David Teal" <[EMAIL PROTECTED]>
> James wrote: > "I'm thinking of tapping off from the base of the washing vessel and > pumping the water / bio back into the top of the vessel via a > domestic shower head. Has anyone tried this? Plan on using this method have tried it out on pilot plant. (1.25l softdrink bottle, windscreen washer pump in neck, base cut off perforated and inserted back to front. Works well, flow rate controlled by voltage fed to pump. 4V gave best compromise between highest flow and breakup of globules. Best results when there was minimum fall from diffuser into oil. > David T wrote: > I think this is a good idea, though I have not tried it. Water here is > 'hard' and foaming is not a problem with bubble wash The water on the Ath Tablelands is very soft and could well be contributing to the emulsification problems during wash that I am experiencing with cottenseed oil BD. Your post has prompted me to try hardening the water with calcium and magnesium salts,probably chlorides. Could also have the benefit of knocking out the OH as a precipitate of Ca(OH)2. Have worked with a Dow Corning product called Antifoam. Considered using it but not sure where it would end up. Regards Paul. 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/
