BOBBY,
WE TESTED THE ALUM ON A LARGE VOLUME OVER THE 4TH.. WORKED BUT TOOK A
LOT OF ENERGY TO REMOVE THE MASS .. WATER WAS CLEAR IN THE END..

BRUCE
--- In oil_from_algae@yahoogroups.com, Bobby Yates Emory <liberty1@...>
wrote:
>
> Alex,
>
> Reading between the lines, there may be some info here that could help
when
> trying to floc out algae.
>
> Also, it says that alum can give a boost to sand filters.
>
> I still like the idea of froth flotation, but who knows what is going
to be
> cost effective?
>
> Bobby
>
> On Thu, Jul 2, 2009 at 12:08 PM, Alex Markin anzactwo@... wrote:
>
> >
> >
> > See
> >
http://WWW.southshoregunitepools.Com/resources/pdfs/how_alum_works.pdf
> > Alum works to remove suspended particles, not emulsions. Does algae
stay in
> > suspension when processed? I'd guess filtration (various options
depending
> > on porosity of the resulting cake and gunking) would remove most of
it. If
> > not I do not see how flocculants would do anything for algae sourced
> > emulsions.
> >
> > I'd guess an emulsion breaker and demulsifiers separating phases is
what
> > you are looking for; not flocculants. An example -
> > http://www.champ-tech.com/onec_prod_emul.asp
> >
> > Cheers
> > Alex
> >
> > PS: In my previous life I was a chemical engineer and have remained
heavily
> > involved in the chemical industry world-wide.
> >
> > *-------Original Message-------*
> >
> > *From:* Bobby Yates Emory liberty1@...
> > *Date:* 7/1/2009 7:20:23 PM
> > *To:* oil_from_algae@yahoogroups.com
> > *Subject:* Re: [oil_from_algae] Re: alum???
> >
> >
> > Bruce,
> >
> > Do you think it might work as a flocculant?
> >
> > I am also considering using it to remove gypsum from drinking water.
> >
> > Bobby
> >
> > On Wed, Jul 1, 2009 at 8:05 AM, lendlabs lendlabs@... wrote:
> >
> >
> > ???*Alum* (pronounced
/ˈæləm/<http://en.wikipedia.org/wiki/Wikipedia:IPA_\
for_English>)
> > is both a specific chemical
compound<http://en.wikipedia.org/wiki/Chemical_compound>and a class of
chemical compounds. The specific compound is the hydrated
> > aluminum potassium sulfate with the
formula<http://en.wikipedia.org/wiki/Chemical_formula>KAl(SO
> > 4)2.12H2O. The wider class of compounds known as alums have the
related
> > stoichiometry <http://en.wikipedia.org/wiki/Stoichiometry>,
*AB*(SO4)2.12H
> > 2O.
> > --- 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&s\
earch_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?ReadMessag\
eId=fa6d5360-f2a2-4af6-9a38-e81dcc479708&FolderID=00000000-0000-0000-000\
0-000000000001&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
> > >
> >
> >
> >
> > --
> > Toward freedom,
> >
> > Bobby Yates Emory
> >
> >
> >
> >
>
>
>
> --
> Toward freedom,
>
> Bobby Yates Emory
>