So many people are using so much alcohol. has anyone tried this device or something similar? It’s basically just a fermentation tank and membrane filtration to separate pure alcohol.
https://thekneeslider.com/efuel100-microfueler-home-ethanol-micro-refinery/
probably makes no attempt to remove the methanol.
Methanol is that dank drank
Can’t you limit biosynthesis of methanol by using inputs that are low in pectin?
But that’s easily separated
I’ve done a bunch I f home distilling and I was pretty sure so long as you chose the right yeast and sugar source methanol production should be quite low.
With methanol being less than 10% by mass you’re still able to separate with distillation. The azeotrope seems to only form above 10% methanol concentration.
If I’m wrong please correct me. The methanol/ethanol azeotrope and separation of such during homebrewing is of interest to me. I can post the paper regarding said azeotrope when I get home if anyone is interested.
sure, I was just pointing out that a “still” designed for fuel production probably doesn’t BOTHER with getting that done for you. Given that MeOH also makes decent fuel…
especially a membrane based separation…although things change when you add evaporation to membrane based separation (pervaporation).
it IS possible they’re making methanol free ethanol.
14 yrs ago that video was produced… Still no sign of it being viable for home market. 
The thing that stuck out to me most in the video is the membrane dehydration of ethanol. I have been scouring the internet and have yet to find a commercially available membrane that could be used for the pervaporation of ethanol-water mixture. If anyone has any leads on such a membrane, feel free to share with the class! At this time, it seems that there are several different potentially viable options but nothing that is readily available off the shelf.