oops, sorry, didn't read Seth's message Re: 'unreacted FFA and 5% remix prewash- thumbs up! Re: Weekly update
girl mark <[email protected]>
| Newsgroups | gmane.org.clubs.gobiodiesel.mixmasters |
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| Message-ID | <[email protected]> |
oops, sorry to prolong the offtopic topic, I didn't see there was another message from Seth asking not to. Homebrewing questions are best answered at http://biodiesel.infopop.cc - that's the biggest and best-organized biodiesel homebrewing forum (and SVO or even solvent thinning/blending forum). You'll usually get great answers about 24 hours a day from a worldwide group of homebrew practitioners. The search function there somewhat sucks but there's a huge archive (I use Google to search the forum if I think the forum search isn't answering my question). Mark girl mark wrote: >Seth Moody wrote: > > > >>Morning Brian, >>quick answers? >> >> >> >>>What is the 5% prewash method again? >>> >>> >>5% prewash is the procedure used to help drop out unreacted FFA's, >>Glycerin and any soap that was just created during reation. >> >> >> > > >there's no such thing as unreacted FFA (free fatty acids) because FFA's >turn into soap almost immediately when lye is present. Besides, FFA >aren't water soluble so wouldn't be affected by this procedure most likely. > If you're seeing FFA in the biodiesel for some reason (you'd do that by >titration), it's usually because of degradation of the biodiesel (ie >oxidation or rotting via bacteria in storage) or because of using acid >somewhere in the process. > > >I've done soap testing (www.biodieselcommunity.org/soaptest) after doing >the 5% remix, and it can cut soap levels almost in half sometimes. >Excellent technique. However, Brian is asking aobut using that INSTEAD >of washing, which isn't a good idea unless you have a good drying >process- the prewash adds water to the biodiesel which won't dry out >easily unless you let it sit for a LONG time (ie you'll see some >cloudiness to the biodiesel after doing the remix process, and that is >water that creates that haze) > >The remix prewash is discussed extensively at the forum >http://biodiesel.infopop.cc > > > >_______________________________________________ >mixmasters mailing list >[email protected] >http://lists.gobiodiesel.org/mailman/listinfo/mixmasters > > >