Waste oil distillate fuel - ethoxide cleaning, odor removing.

A method of cleaning and odor-removing distilled WMO-based fuel.
This method uses some easy-to-get reagents, ethyl alcohol (sold as methylated spirit), sodium hydroxide (caustic soda, drain cleaner), silica gel (cat toilet crystals), plus water. No need for sulfuric acid or poisonous methanol.

Website: https://www.ferromit.com
WMO still construction plans: https://www.doubloonbay.net