Hello Todd, Pieter and all >Pieter, > >The answer is simple. You most probably can't using readily available >resources. > >While you may be able to find some way to bleach and deodorize the glycerin >after FFA separation and alcohol removal, you won't be able to improve its >purity level unless you distill the glycerin, or at least the water that >resides in it. > >Glycerin boils at over 550* F, conserably less under vacuum, which is the >norm in industry but still energy and engineering intense. And then you have >to distill the evaporated glycerin. > >I believe Keith has pointed to a few solvent reclaimers out there. But they >run in the thousands and tens of thousands of dollars.
Glycerine purification http://journeytoforever.org/biofuel_supply.html#glycpure >Glycerin refining to the degree that you're suggesting is, at the home >brewer level, a bit akin to the holy grail. Nobody's "found" it yet. > >Of course you could always ferment the glycerin and convert it to ethanol. >That is if you don't have any particular aversion to working with strains of >botulinus. Don't think your neighbors, family, friends or the borough health >department would be too thrilled with you though. ... or chuck the whole by-product into a digester and turn it into methane. Not by itself though - you also need N stuff and C stuff and fibre and water. Best Keith >Todd Swearingen > >----- Original Message ----- >From: "Pieter Koole" <[EMAIL PROTECTED]> >To: <biofuel@yahoogroups.com> >Sent: Thursday, June 26, 2003 2:22 PM >Subject: [biofuel] Re:To Chris problems sep. glycerine > > > > Thank you Chris, > > But what can I do now to get "clean" glycerin ? > > I have tried it with different amounts of acid, and a slight separation is > > visible, which means that the top layer is very dark and the bottom layer >is > > very very dark. > > > > Met vriendelijke groeten, > > Pieter Koole > > Netherlands. > > > > ----- Original Message ----- > > From: "Christopher Tan" <[EMAIL PROTECTED]> > > To: <biofuel@yahoogroups.com> > > Sent: Thursday, June 26, 2003 2:50 PM > > Subject: RE: [biofuel] Problems sep. glycerine > > > > > > > Pieter, > > > > > > You might be using too much Sodium Hydroxide. That would explain why the > > > sample became very hot when you added Phosphoric Acid. Acid-base > > > neutralization is exothermic. That would also explain why you are not > > seeing > > > a clear separation of FFA. It is because the phosphoric acid that is > > > suppose to form FFA is used up in the neutralization reaction thus very > > > little FFA is produced. > > > > > > Chris > > > > > > =>-----Original Message----- > > > =>From: Ken Provost [mailto:[EMAIL PROTECTED] > > > =>Sent: Monday, June 23, 2003 6:10 AM > > > =>To: biofuel@yahoogroups.com > > > =>Subject: Re: [biofuel] Problems sep. glycerine > > > => > > > => > > > =>on 6/22/03 1:36 PM, Pieter Koole at [EMAIL PROTECTED] wrote: > > > => > > > =>> Hello, > > > =>> I am still trying to separate glycerin and FFA's, but > > > =>> it does not work. > > > =>> Now I used ¸ liter of the bottom layer ( from the very > > > =>> bottom of the vessel ) and ¸ liter ( not ¸ ml. but ¸ liter ! ) > > > =>> sulphuric acid ( 98% ) and all that happens : no separation. > > > => > > > => > > > =>Wow! Pi liters! I could never measure that close... :-) > > > => > > > => > > > =>> What I see after several hours, is a top layer which > > > =>> is about ² of the sample. This top layer is slightly > > > =>> lighter in colour than the bottom layer, which is really > > > =>> dark / black. > > > => > > > =>I suspect the top layer is FFA and the bottom is glycerine. > > > =>(The FFA layer might even be sort of "reddish". It's also > > > =>known as "red oil".) > > > => > > > =>You're using way to much H2SO4. A good way to see the FFA's > > > =>clearly is to dilute a small amount (maybe 100 l) of the > > > =>glycerine layer into a liter of water, so the dark color > > > =>of the glycerine is completely lost. Then add H2SO4 just > > > =>10 ml at a time, stirring 5 minutes each time, until a > > > =>dark red layer of FFA starts separating out in globules. > > > =>Let it sit a couple hours and all the FFA will be floating > > > =>on top. Smells weird..... -K ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/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/
