???Alum (pronounced /ˈælÉ™m/) is both a specific chemical compound and a class of chemical compounds. The specific compound is the hydrated aluminum potassium sulfate with the formula KAl(SO₄)₂^.12H₂O. The wider class of compounds known as alums have the related stoichiometry, AB(SO₄)₂^.12H₂O.
--- In oil_from_algae@yahoogroups.com, Bobby Yates Emory <liberty1@...> wrote:
>
> Ron and Gianfranco,
>
> I think that is commonly called Alum and is easily available - this is
> WalMart's listing:
>
> <
> http://www.walmart.com/search/search-ng.do?search_constraint=0&ic=48_0&search_query=alum&Find.x=11&Find.y=8&Find=Find
> >
>
> Bobby
>
> 2009/7/1 Gian Roncolato alchemirg@...
>
> >
> >
> > Dear Ron,
> > In the water treatment industries to clarify the water and flocculatind all
> > te suspended solids it is normally used "Aluminum Sulfate" (liquid form
> > about 8% content), can be used fram 10 to 25 grams per cubic meters.
> > It is not expensive and it work perfectly. It need a "pre-dilution" with
> > water followed by a distribution and good mixture inside the tank.
> > Regards
> > Gianfranco Roncolato
> >
> > ------------------------------
> > To: oil_from_algae@yahoogroups.com
> > From: potrzebie44@...
> > Date: Tue, 30 Jun 2009 13:23:21 -0700
> > Subject: [oil_from_algae] Learning from Failure [1 Attachment]
> >
> > [Attachment(s)<http://co119w.col119.mail.live.com/mail/EditMessageLight.aspx?ReadMessageId=fa6d5360-f2a2-4af6-9a38-e81dcc479708&FolderID=00000000-0000-0000-0000-000000000001&CP=-1&n=1316965772&Action=Reply&AllowUnsafe=False#TopText>from Ron Brown included below]
> >
> > The attached photo shows an algae culture we grew from one slant of
> > Chlorella vulgaris that we got from Carolina Biological Supply Company
> > ($9.00 + $30.00 s&H) in one week. I count that part as a success. But we
> > tried to flocculate it with lime, and that was a little disappointing.
> > "Microalgae Harvesting and
> > Processing: A Literature Review" discusses the use of lime to flocculate
> > algae. a quick search of the internet confirmed that lime has been used to
> > control algae in ponds. Well, it was quick, cheap and easy, but it didn't
> > work. We applied a pound or two of lime that was left over from a
> > construction project to about 300 gallons of culture. I was hoping to be
> > able to scoop up the floc with a household strainer. Although there was a
> > fine white precipitate on the bottom, there was no sign of flocculation.
> >
> >
> > ---rsb
> > Ron Brown
> > 30JUNE2009
> >
> >
> >
> > ------------------------------
> > What can you do with the new Windows Live? Find out<http://www.microsoft.com/windows/windowslive/default.aspx>
> >
> >
>
>
>
> --
> Toward freedom,
>
> Bobby Yates Emory
>