I have been thinking about aluminum sulfate and/or vacuum filtration for a while as those would be safer. However, I wouldn’t have been able to expand on my glass collection, so there is that.
The waste is fairly dark from the dyes and will mostly solidify once all the IPA and other solvents evaporate away. There be some nasty stuff in there that I can keep contained and away from everything while it cures and it’s a much easier quantity to dispose of.
I wouldn’t use a closed alcohol or water still for this as I can’t control or monitor anything. There are a few videos of people who use alcohol/water stills for this reason, but that is a bit janky, even for me. The biggest thing involved is temperature control, IMHO. I don’t want any bit of this stuff to exceed 85C and I know my apparatus is sealed properly. Having a water cooled glass distillation tube I can see is super important as well. It gives me a good visual about what is being extracted and when. (I am assuming you ment one of those electric alcohol stills you can get on Amazon.)
In my case, I am using an alcohol still in its purest form.
Edit: Here is some of the waste from today. The white stuff is solidified resin and you can see the concentrate. There seems to be about 100-150ml of IPA left.
Do you take any steps to clean the wash before boiling it? Filtering or anything like that?
I’ve had some success using aluminum sulfate to precipitate resin out of the wash based on this guy’s work: Recycle Isopropyl Alcohol FAST! | Recovering IPA From 3D Printer Resin Wash
I haven’t tried distillation… as you say, it’s risky.
What does your waste look like after distillation? And… what would you think about using an alcohol still for this, instead of lab glassware?
I have been thinking about aluminum sulfate and/or vacuum filtration for a while as those would be safer. However, I wouldn’t have been able to expand on my glass collection, so there is that.
The waste is fairly dark from the dyes and will mostly solidify once all the IPA and other solvents evaporate away. There be some nasty stuff in there that I can keep contained and away from everything while it cures and it’s a much easier quantity to dispose of.
I wouldn’t use a closed alcohol or water still for this as I can’t control or monitor anything. There are a few videos of people who use alcohol/water stills for this reason, but that is a bit janky, even for me. The biggest thing involved is temperature control, IMHO. I don’t want any bit of this stuff to exceed 85C and I know my apparatus is sealed properly. Having a water cooled glass distillation tube I can see is super important as well. It gives me a good visual about what is being extracted and when. (I am assuming you ment one of those electric alcohol stills you can get on Amazon.)
In my case, I am using an alcohol still in its purest form.
Edit: Here is some of the waste from today. The white stuff is solidified resin and you can see the concentrate. There seems to be about 100-150ml of IPA left.