I'm just trying to extract the ethanol for drinking. Denaturated alcohol is very popular in my country among poor people because it's ten times cheaper than the cheapest vodka.Unlike other countries, this denaturated alcohol doesn't contain any methanol so it's not that toxic.
Some people even drink 1 liter of this stuff each day.
Some filter it through bread and swear by it...I am not sure how this works.
Could some activated charcoal absorb the unwanted substances?