Small amounts of used peanut oil can be disposed of in the garbage, while larger amounts can disposed of at a municipal household hazardous waste collection facility or recycled into bio-diesel or straight vegetable oil. To recycle peanut oil, contact local restaurants or universities, or offer it privately.
Restaurants that frequently use cooking oils often get paid for their disposed oil if it can be made into bio-diesel. This makes them more willing to accept privately donated oils. Many engineering or environmental sciences departments have small bio-diesel research or production programs and accept donated peanut oil. To offer used peanut oil for private use, post an ad online or in a local newspaper. Individuals who run converted diesel vehicles often make their own bio-diesel at home and are in need of used oil.