Theres no way you’re hitting that kind of flow rate on 1 8040, maybe with 2 or 3 you can but at 36 k a pop retail (from Evonik) your membranes will cost more then my whole skid will
There are much better alternatives to membranes then Evonik which are a 10th of the cost
Well, we are hitting that flow rate with Evonik membranes and exceeding it with our own. Most skids aren’t designed to use the pressure and pump rate ours do to achieve that flow rate, so your trials may vary. And we don’t use Evonik membranes anymore, and we never charged $36k for them even when we did.
Look at our instagram: ecosceinc . On one video you will see us hitting 680 liter per hour with only 2 8040’s. That is a flow rate of 340 l/h per 8040.
I have already dmed you about what alternatives you are referencing.
Why are you winterizing cold extracted ethanol?
That video on your IG barely shows any color remediation.
This isn’t even our winterization membrane, look at that color remediation.
Membranes if done right should eliminate any need for cold extraction
Looking good!
Think i posted this earlier in thread:
Looks like we both got a little chlorophyll through though. Still haven’t seen a membrane that knocks that out completely
We’re not winterizing cold ethanol. We were winterizing room temperature hydrocarbon extracts in the video posted. Most of our machines are being used to winterize room temperature ethanol extracts.
And we are doing at 680L/hr.
Yeah we certainly noticed color remediation. But not as well as adsorbents (even just a bit of charcoal for an ethanol extract).
How were you doing for acidic cannabanoid permeation? We were noticing our retentate with the undesirables was running 40-50% thc-a. Which just pretty much made that unusable.
That’s the cleanest room temp hydrocarbon extract ive ever seen. Mine is the black one I posted.
It’s room temp hydrocarbon extracted from mostly flower. It is quite waxy, in spite of the color.
You are aware there are many different solvents with different results within that category, yes?
Who can get me a membrane that will fit my smaller 2540 (2.5"x40") membrane skid?
I’m looking to do some r&d on winterizing my room temp hexane extracted oil before we decide to scale up to a larger membrane skid.
Here’s a couple thousand more “words”
sweet chinese skid! where did you score that?
The videos i’ve seen from evonik say that diafiltration is the answer to this. did you try flushing with solvent? was there just too much solvent needed?
Even with extra solvent flushing I was getting to about 20% acidic cannabanoid content in my retentate after evaporation. I’d imagine I could’ve flushed much more solvent through and got that down further.
A partnered lab that closed down never used it and didnt know what it was for.
It might’ve been some issues I had running the evoniks. They didn’t tell me the membranes would “set” to a solvent, so i started with methanol, then tried ethanol, and in the end my data wasn’t the most useful as the performance just started to slow significantly.
interesting. i did not know they “set” to a solvent either. id like to know more about that.
i have yet to use or even see a skid in action, but from what i am hearing the technology for dewax/decolorization isn’t quite there yet?
IF that were the case, is there any merit to using membranes purely for desolvation after a conventional winterization?
thnx
@Kingofthekush420 has been doing some decent work with his alkane membranes, seems like he’s getting it fully winterized?
I haven’t seen anyone getting those results with an alcohol yet.
Yeah definitely to your question. Desolvating via membrane is almost guaranteed to be better energy wise for solvent removal.
I would highly recommend the use of membranes for desolvation. They use like 5% the energy of a falling film and scale better. To be honest I think that application even more powerful than using them for winterization. After all it takes more energy to phase change a solvent than to just cool it down.
So what kind of vendors you would recommend instead of Evonik?
@Kingofthekush420 has his own membrane company
@MagisterChemist does as well, with Xspiral
Well, to answer questions about vendors of membranes themselves, i list many providers besides evonik in the DIY membrane thread. Of course, if anyone else knows any vendors you are welcome to add to the list.
