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Author: Subject: Which extraction method to use for plants
haribo
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[*] posted on 17-12-2006 at 06:56


For extracting some oils, for example safrole, steam-distillation does the trick. You can buy stills designed to extract essential oils quite easily. I got a vintage one.

Step 1- Steam distill
Step 2- Fractionally distill

Makes the place smell wonderful as well.
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XxDaTxX
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[*] posted on 17-12-2006 at 10:58


Quote:
Originally posted by unionised
You have referenced a page which shows that the experimental evidence supports the idea that wax can be stripped from solutions in DCM by chilling. I realise that might have quite a lot to do with the original question about getting stuff from plant extracts, but please explain what you think it has to do with distillation?


It says chill/centrifuge, then steam strip (aka steam distill on lab scale). Exactly what I told him to do.

I recomended steam stripping to take advantage of the shifts in vapor equilibria that it would make on the system.

Quote:
Originally posted by Sandmeyer
Quote:
Originally posted by XxDaTxX DCM dissolves wax as a function of its temperature, at higher temperatures it dissolves more and more wax, and is thus carried over any distillation head.


Ok, you don't have a clue what the hell you're talking about. Can we all at least agree on that?


What about what I said do you not believe?

"DCM dissolves wax as a function of its temperature, at higher temperatures it dissolves more and more wax":



"and is thus carried over any distillation head": So you mean to tell me that dissolving more wax at a higher temerature (ie during a distillation) has nothing to do with the mol fraction of the liquid, and therefore the mol fraction of the vapor above?

This thread makes my head hurt. Seriously, why are you still arguing with me .... I told you I made it all up. I am a fraud.

[Edited on 17-12-2006 by XxDaTxX]
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Nicodem
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[*] posted on 17-12-2006 at 11:02


You are unbelievable!

…as well as annoying.
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XxDaTxX
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[*] posted on 17-12-2006 at 11:05


Quote:
Originally posted by Nicodem
You are unbelievable!

…as well as annoying.


Do you have a reference for that ? HAhaahah
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[*] posted on 17-12-2006 at 11:17


All the abominations of the human kind, internet trolls included, will burn in hell.

Reference: The Bible
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unionised
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[*] posted on 17-12-2006 at 11:56


He is unbelievable and annoying. I cite a reference a few posts up this thread.
I also suspect trolling here ( ref all the times he failed to address the questions asked)
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XxDaTxX
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[*] posted on 17-12-2006 at 12:20


I give up on this thread ... seriously

[Edited on 17-12-2006 by XxDaTxX]
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Sandmeyer
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[*] posted on 17-12-2006 at 17:05


Quote:
Originally posted by XxDaTxX
So you mean to tell me that dissolving more wax at a higher temerature (ie during a distillation) has nothing to do with the mol fraction of the liquid, and therefore the mol fraction of the vapor above?


What I meen (and don't expect you to understand) is that your megalomania prevents you from adequately process the information that you read, hence you (miss)lead your self to belive that something that refutes your claim actually supports it.

[Edited on 18-12-2006 by Sandmeyer]




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[*] posted on 17-12-2006 at 17:16


Sounds like Indole_Amine is back .................solo



It's better to die on your feet, than live on your knees....Emiliano Zapata.
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[*] posted on 19-12-2006 at 07:10


Quote:
I give up on this thread ... seriously

But first you have to post a treatise on the VdW-interactions between nitrogen and DCM giving a decreased solubility of wax in DCM so that the amount of wax at the still head is lower when you blow 80°C air through the mix than when you distill at 40°C. Or something like that. For bonus points mention "your" undergads at least three times, n-dimensional phase diagrams, how all this is way over everyones but your head and that it's not your fault that the theory says such things at least once.
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XxDaTxX
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[*] posted on 19-12-2006 at 13:06


"But first you have to post a treatise on the VdW-interactions between nitrogen and DCM giving a decreased solubility of wax in DCM so that the amount of wax at the still head is lower when you blow 80°C air through the mix than when you distill at 40°C. Or something like that. For bonus points mention "your" undergads at least three times, n-dimensional phase diagrams, how all this is way over everyones but your head and that it's not your fault that the theory says such things at least once."

Well now that you've said it ... I have nothing left to say. Couldn't have said it better.

Quote:
Originally posted by unionised
... I also suspect trolling here...


hehehe ....


::::runs and hides laughing at everyone with a stick up their butt:::

Seriously though .... you REALLY want to know what came over with the DCM? .... heheheh

[Edited on 19-12-2006 by XxDaTxX]
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[*] posted on 19-12-2006 at 14:22


Seriously though .... you REALLY want to know what came over with the DCM?
Yes, I said I did and I'm not a liar. OTOH I realise that theres bugger all chance of you helping find out.
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[*] posted on 19-12-2006 at 20:53


Quote:
Originally posted by XxDaTxX

::::runs and hides laughing at everyone with a stick up their butt:::


Don't skip that haloperidol, remember three pills every day, morning, afternoon, evening.

[Edited on 20-12-2006 by Sandmeyer]
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[*] posted on 20-12-2006 at 05:43


I'm not sure he needs psychoactive drugs; he may well grow up to be a useful member of society. In the meantime I guess we just have to put up in the same way that we do with crying babies on busses and such like.
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