Search found 225 matches

by seravitae
Sat Nov 19, 2011 2:51 am
Forum: Research and Theory
Topic: Distilling on the grain?
Replies: 14
Views: 3522

Re: Distilling on the grain?

Some of it does. it's not a huge problem so long as it degrades 'gently' if that somehow makes sense. Noticed no off flavours starting to heat at low temp. i've noticed most scortching occurs when you heat too quickly from room temperature. I suspect it has to do with decreased convection. I usually...
by seravitae
Fri Oct 07, 2011 7:42 pm
Forum: Research and Theory
Topic: Two questions...
Replies: 3
Views: 510

Re: Two questions...

I've often thought about going down the ceramics route for a few reasons, mostly that you can make insane shapes by hand then cast it into something quite strong. It'd probably be great for a boiler and column but ceramics would suck for a condensor unless the wall was very thin, they are so insulat...
by seravitae
Fri Oct 07, 2011 7:33 pm
Forum: Research and Theory
Topic: Quick question about methods...
Replies: 9
Views: 896

Re: Quick question about methods...

taste. at the end of the day are you going to take a sip and go "nah, its only 39.2% abv / 81C fraction, ill pass" ? there's pretty much a direct correlation between head temperature and ABV, whereas using a parrot to measure ABV, unless you prechill your distillate to exactly what the alcometer cal...
by seravitae
Fri Oct 07, 2011 7:11 pm
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

I'm not entirely sure if i understand.. no heat? You'd have to have *some* heat to keep the vapor from re-condensing on the sides, unless your thinking only a centrifuge like the long pipe, and no vapor component.... After all, if you spin a liquid it isn't going to just vaporize on it's own, in-fa...
by seravitae
Thu Oct 06, 2011 5:48 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

I imagine that you would not achieve the same flow rates as them, as their seperation is much much more pronounced due to relative densities and also immisicibility. You also raise a good point, i know that in some breweries clarification is actually done using continuous centrifugation, yeast is mu...
by seravitae
Mon Oct 03, 2011 10:48 pm
Forum: Mashing and Fermenting
Topic: Boil in a Bag question
Replies: 2
Views: 391

Re: Boil in a Bag question

i have. dont rest your bag on the bottom, espectally with burners.
by seravitae
Mon Oct 03, 2011 6:14 pm
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

guitarmaster: thanks for the info, im sure the others will find it useful :) just pointing out that as airhill said, we're not talking about a spinning boiler, we're talking about heatless seperation of miscible solvents via centripetal force alone. :) airhill: yes, intermolecular bonds are much wea...
by seravitae
Mon Oct 03, 2011 5:54 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

I know, all good :) That paper was a phys. chem, so they did the numbers which is applicable to any system. They did not actually test with different compositions, probably because it's not practical industrially. However if i get time, i will see if i can plug in some figures for ethanol:water and ...
by seravitae
Sun Oct 02, 2011 1:53 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

Update: In true efficiency, I didn't even need to run the experiment as preliminary research has indicated that it has already been modeled and proved. Yoav Tsori, Ludwik Leibler, Phase-separation of miscible liquids in a centrifuge, Comptes Rendus Physique, Volume 8, Issues 7-8, September-October 2...
by seravitae
Sat Oct 01, 2011 11:17 pm
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

Oh, ok, well, I didn't see that, my bad. WFE is pretty neat and I actually set out to build one some time ago, however didn't really get around to it. I've always stumbled upon making proper seals (vapour proof, we are dealing with flammable vapours here). TFE itself would be quite easy to build and...
by seravitae
Sat Oct 01, 2011 4:46 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

also i am extremely busy at the moment but if I get a chance soon I will go into my work lab and create an 'extremist' example, by mixing two fully miscible solvents with the largest difference in density I can find - probably carbon tetrachloride and some hydrocarbon. Equilibrium of density of misc...
by seravitae
Sat Oct 01, 2011 4:38 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

Since ethanol/water (which is almost ALL of what is in the ferment mash), are fully miscible, they form a solution which I believe has no normal property of separation. Even with a simple distillation, we are not separating. We are simply causing the solution to increase in strength, due to the pow...
by seravitae
Tue Sep 27, 2011 5:16 am
Forum: Research and Theory
Topic: Distilling on the grain?
Replies: 14
Views: 3522

Re: Distilling on the grain?

Ive distilled on the grain with great results. Not the whole grain bill, but a decent amount. The trick is to make sure your grain isnt touching your element otherwise you will get scortching and burnt flavours. Also if using an immersion element (as I do) you must heat up *very* slowly, and with go...
by seravitae
Tue Sep 27, 2011 5:07 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

http://www.youtube.com/watch?v=-W8_GpMz9nI&feature=pyv&ad=6303752764&kw=separator%20oil" onclick="window.open(this.href);return false;" rel="nofollow for the movie of the device i was talking about. it would be interesting to see what happens if you put ethanol/water through this and just check the ...
by seravitae
Tue Sep 27, 2011 5:02 am
Forum: Research and Theory
Topic: Centrifuge? would it work???
Replies: 56
Views: 9912

Re: Centrifuge? would it work???

ressurecting an old thread i know, but just had a late night thought on this. maybe one day I will try it out. I remember seeing a company produce a cheap centripetal oil-water seperator for the oil spills we had many moons ago. The technique was to pump water at high speed at an angle down a long t...
by seravitae
Sat Dec 25, 2010 3:09 am
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: Yeast, To turbo or not to turbo?
Replies: 41
Views: 8666

Re: Yeast, To turbo or not to turbo?

azshine - i see you have PM's disabled - any particular reason for this? I would like to contact you via PM or otherwise. If you find this appropriate feel free to contact me either through this thread, pm, or i'd be happy to supply my email address.
by seravitae
Thu Dec 23, 2010 9:52 pm
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: Yeast, To turbo or not to turbo?
Replies: 41
Views: 8666

Re: Yeast, To turbo or not to turbo?

http://homedistiller.org/forum/viewtopic.php?f=39&t=15755&p=6839514#p6839359 just pointing out i've never not used a turbo and my results are always excellent, so let's try to keep an open mind. Turbos require more care distilling but I think we should stop flogging turbos as bad or the 'lesser' alt...
by seravitae
Sun Jul 11, 2010 9:16 pm
Forum: Novice Distillers
Topic: Product percentage
Replies: 23
Views: 1338

Re: Product percentage

Dave, Urn element heating controlls are thermostats, and are generally rubbish for temperature control. Also don't give up on turbo yeasts, they have their uses, you can read my mini-review on turbo yeasts, pro's and cons in another recent thread here. Your still type (based on your suggestions), wh...
by seravitae
Thu Jul 08, 2010 8:24 pm
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: Stinky Yeast!!
Replies: 3
Views: 941

Re: Stinky Yeast!!

Some yeasts are just naturally stinky when fermenting due to production of H2S. If doing neutral washes the H2S smell usually comes off during distillation. Nutrients will help, also lowering the OG of the wash can help too, as you're stressing the yeast less. H2S production is usually highest at th...
by seravitae
Wed Jun 30, 2010 2:54 am
Forum: Research and Theory
Topic: Before I experiment
Replies: 13
Views: 1077

Re: Before I experiment

I miss interrupted your question, but a buffer is made of a acid and base to git down to 4.5 I believe you whould use acetic acid+sodium acetate. no brew stores are going to carry it, I believe it is avalabul on line. most likely a chemical supply. A buffer is not made of an acid and a base. Otherw...
by seravitae
Wed Jun 30, 2010 2:39 am
Forum: My First .....
Topic: Boka first run...smells like acetone, taste like...
Replies: 33
Views: 2897

Re: Boka first run...smells like acetone, taste like...

What temperature did you ferment it at?
What was OG and FG?
Did you taste the wash prior to distilling?
Did you rack/clarify or distill on the yeast?

Cheers,
S.
by seravitae
Wed Jun 30, 2010 2:33 am
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: Best yeast for fruit based vodka wash
Replies: 13
Views: 2451

Re: Best yeast for fruit based vodka wash

I would supplement with sucrose and ferment with US-05. With not much sugar in there you want something that will munch through everything it can get its hands on.
by seravitae
Mon Jun 28, 2010 10:42 pm
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: yeast bomb percentage
Replies: 17
Views: 3712

Re: yeast bomb percentage

Just an ammendment again, one requires not only skills, but also an electrical license to perform mains wiring. Please do *not* skimp out on this, it is just not worth electrocuting yourself or damaging your equipment.
by seravitae
Sun Jun 27, 2010 11:58 pm
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: yeast bomb percentage
Replies: 17
Views: 3712

Re: yeast bomb percentage

Great post re-turbo yeasts, just done my first non turbo wash and keen to taste the results. The fermentation fridge with digital thermostat is something i have been looking for (im in Melbourne, Aust) but nobody i have talked to has anything like it. This would be especially useful for my beer fer...
by seravitae
Sun Jun 27, 2010 8:48 pm
Forum: Grains
Topic: Wheat and sugar mash for vodka
Replies: 4
Views: 2243

Re: Wheat and sugar mash for vodka

Yes, of course, sorry I should have mentioned that too, BD is right - you can also use the enzymes in another malt to chew through your wheat.
by seravitae
Sun Jun 27, 2010 7:17 pm
Forum: Grains
Topic: Wheat and sugar mash for vodka
Replies: 4
Views: 2243

Re: Wheat and sugar mash for vodka

Depends on your wheat. If the wheat is raw, you can malt it, as it has diastatic properties. Else, you'd need to malt it (either wet or dry malt) and then mash it to convert the starches to sugars. If it's been heat treated or if its milled wheat, it's probably too late to convert anything from it. ...
by seravitae
Thu Jun 24, 2010 1:17 am
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: Same Yeast 2 differnt manufactures???
Replies: 10
Views: 1092

Re: Same Yeast 2 differnt manufactures???

With many companies producing the same yeast, are they paying royalties or have other licensing agreement present? With such established genetics, surely someone has patented or secured IP on that particular strain...? I'm unsure about copyright/royalties/patents on brewing yeasts, but I am certainl...
by seravitae
Thu Jun 24, 2010 1:07 am
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: yeast bomb percentage
Replies: 17
Views: 3712

Re: yeast bomb percentage

no worries, glad to help :wink:
by seravitae
Wed Jun 23, 2010 7:19 pm
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: yeast bomb percentage
Replies: 17
Views: 3712

Re: yeast bomb percentage

Cheers. :) Another addition: Turbo yeasts can be useful given particular geographic regions. In my case, we have fairly strict water allowances year-to-year. As such, either i literally stockpile water (fill up fermentor over a few days to weeks) for a standard yeast based batch, or, I can use a tur...
by seravitae
Wed Jun 23, 2010 2:51 am
Forum: Yeasts, Enzymes, Fungi, Nutrients
Topic: yeast bomb percentage
Replies: 17
Views: 3712

Re: yeast bomb percentage

Agree with Dnderhead on this one, would like to add more info to the stack though. The difference between the 'yeast bomb' recepie and turbo yeasts, is in fact, not much. Both are recepies containing various nutrients to supplement healthy replication of yeast cells and metabolism of sugars. Where t...