Hi Tom; Thomas Kelly wrote:
> Joe, > I've been wondering about this myself. > This was, in part, what I was asking. Do we simply have to neutralize > the mix or do we have to achieve a particular pH? > > Would it be possible to measure the amount of acid needed to bring a > known volume of the glycerine mix to the desired pH and then extrapolate to > the volume of cocktail we have at hand? I am guessing the answer is yes. If we titrate a sample from the mixture of cocktails combined from several batches. I'm not sure how to do that titration. I think the glycerin cocktail is water soluble so perhaps we could mix a few ml of cocktail in some DI water and titrate with phosphoric to determine the required amount. If we use phenolphthelein the turning point would be ph 8.5 so it is not completely neutralized. > Todd S. describes (at JTF: "Separating Glycerine") how to calculate the > amount of acid needed for glyc. cocktail of unknown history. It is > effective, but one must have patience. > I suspect that many people do not split the mix because it's a bit > confusing or sounds difficult. I read this one day and it seemed a little involved but perhaps it is the only way. I need to read it again and get it clear in my head. No time ATM I am going full blast getting ready to teach my seminar on reactor building. Best regards; Joe _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
