Have you tried using typical water filters and letting the alcohol filter through? I suppose it wouldn’t remain as pure as distilling, but might be mostly reusable while posing no immediate fire hazard.
I have considered vacuum filtration using celite and powdered carbon, but the materials cost would start to exceed the cost of the IPA. Standard activated charcoal would filter the IPA, but purity is a goal of mine. (Molecular sieves would be a much better option in regards to filtration, I believe.)
TBH, this is within my tolerance for risk and just one of several sub-hobbies that involve potentially dangerous processes. (Nothing illegal, of course.)
Have you tried using typical water filters and letting the alcohol filter through? I suppose it wouldn’t remain as pure as distilling, but might be mostly reusable while posing no immediate fire hazard.
I have considered vacuum filtration using celite and powdered carbon, but the materials cost would start to exceed the cost of the IPA. Standard activated charcoal would filter the IPA, but purity is a goal of mine. (Molecular sieves would be a much better option in regards to filtration, I believe.)
TBH, this is within my tolerance for risk and just one of several sub-hobbies that involve potentially dangerous processes. (Nothing illegal, of course.)