The study looked at how adding liquid waste back into landfills can speed up the breakdown of trash and increase gas production. By analyzing data from different types of landfill tests, researchers found that recirculating leachate can help manage waste and make gas faster. The liquid waste breaks down quicker than in regular landfills, and how much is made depends on how the landfill is run and the weather. Storing the liquid waste on-site is important for managing it and reducing the amount that needs to be treated elsewhere.