There is quite likely Aluminum in Alum, depending on type. Alum
Aluminum Sulfate Al2(SO4) Note the AL2(SO4) in 3 of the 4 types of Alum below ( not a complete list ): Potash alum, K2SO4·Al2(SO4)3·24H2O Sodium alum, Na2SO4·Al2(SO4)3·24H2O Chrome alum, K2SO4·Cr2(SO4)3·24H2O Ammonia alum, NH4Al(SO4)2·12H2O Alum, in chemistry, is a term given to the crystallized double sulfates of the typical formula M+2SO4·M3+2(SO4)3·24H2O, where M+ is the sign of an alkali metal (lithium, sodium, potassium, rubidium, or cesium), and M3+ denotes one of the trivalent metals (typically ALUMINIUM, chromium, or iron (III)). The ammonium ion (NH4+) also occurs in the M+ position. http://en.wikipedia.org/wiki/Alum Like I said, "IIRC, aluminum soaps will thicken fuels, and that was a early way to make napalm. I'm not saying that alum would do this, but, it should be something to keep in mind, as, soap is a byproduct of biofuel production." Greg H. ----- Original Message ----- From: "John Donahue" <[EMAIL PROTECTED]> To: <Biofuel@sustainablelists.org> Sent: Tuesday, December 13, 2005 21:11 Subject: Re: [Biofuel] Alum as coagulant > Alum is not the same as aluminum > > John D. > _______________________________________________ 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/
