Hi girl-mark-fire, Is there any sense in washing the BD when the pH is around 7 ? I use the single stage base method. If you recommend washing, what is the best way to do so ?
Met vriendelijke groeten, Pieter Koole Netherlands The information contained in this message (including attachments) is confidential, and is intended for the addressee(s) only. If you have received this message in error please delete it and notify the originator immediately. The unauthorized use, disclosure, copying or alteration of this message is strictly forbidden. We will not be liable for direct, special, indirect or consequential damages arising from alteration of the contents of this message by a third party or in case of electronic communications as a result of any virus being passed on. ----- Original Message ----- From: "girl_mark_fire" <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Sunday, September 21, 2003 8:08 AM Subject: [biofuel] Re: phosphoric acid in Foolproof method > I think that part of the acid advice comes from Terry UK's old, old > message that's up at your site- 'add a gloop' I think it says. It was > the best info there was at the time (a lot better than the > bound-for-emulsion suggestions in Tickell's book which tell you to > basically spray water at the stuff, I've been there done that and boy > did it confuse me when it went to emulsion). > Terry's article is where I first saw bubblewashing instructions and > though Aleks gives a different way of doing it, the 'just add a gloop' > of acid bit sticks in one's mind I think. I thought that 'just keep > adding acid' advice from Terry also really threw me off when I was > first starting out with washing, as it didn't really explain emulsion > other than to suggest fixing it with acid (with little accounting for > different strengths of acid, etc...) Which is primarily why I wrote > that article you've got up there. Perhaps Terry's article could use a > link to your notes on acid in case people don' t find it by > themselves? > > by the way when you use acids to break emulsion, how much acid do > people use, compared to the amount needed to get the water pH to go > neutral? It seems to me that it takes a while to see visible results > by the 'just add some till emulsion clears' method, so people probably > overdo the acid waiting to see results. Just a hunch. Maybe a more > scientific approach to that particular problem is in order as well? > > (I am a very big fan of hot water washing now and dont ' get emulsion > at all no matter how vigerous the wash is, in fact I've been > experimenting with all the 'emulsifying' wash methods- what Todd calls > "Frog in a Blender'. I'ts still quite hot outside right now so it > doesn't cost me much in energy to heat. In winter it'll be a different > story) > > > > > . So I still don't recommend > > >acidulating as a matter of course, unless you know what you're > doing. > > >It can be done right if you do a titration for soap/catalyst first > to > > >find out how much acid to use (that HCL/ bromophenol blue indicator > > >titration that Juan described a week or so ago). > > > > Why do a titration? Adding it slowly while monitoring the pH should > do. > > > > > > > > I'd like to test this out against that soap test, see if it turns out > the same. Someone's already done the research to figure out what the > soap test titration tells you in exact numbers, so it's one of those > rare things in biodiesel shadetree testing, a quantitative measure. > It's what I was looking for a year ago with quest > > > > 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/ > > ------------------------ Yahoo! Groups Sponsor ---------------------~--> ReplayTV: Control live television Special Sale: 50% off ReplayTV CNet Ranked #1 over Tivo! http://us.click.yahoo.com/aUMW7B/A6qGAA/ySSFAA/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/
