Decarbonization of the Waste Industry in the U.S.A. and the European Union

Methane (CH₄) emissions from the waste industry in the U.S.A. and the European Union (EU) have decreased by over 38% from 1990 to 2021. The success in CH₄ emission reduction in the U.S.A. is attributable to two main reasons. Firstly, the increase in the recycling and composting share to 32% of managed waste, thus removing decomposable material from landfills, and secondly, the implementation of methane capture and utilization programs, which have reduced the CH₄ released into the atmosphere from 1990 to 2022 by over 60%. By 2022, the EU had reduced landfilling to 23% of the total waste, with waste-to-energy and composting more than double that of their U.S. counterparts, and recycling alone attaining a share of 30%. The EU’s success has been the result of aggressive European legislation requiring biodegradable MSW going to landfills to be reduced by 2035 to 10% of that in 1995, and 65% of packaging waste to be retrieved and recycled by 2025. In terms of N₂O emissions, in the EU there was a decrease from wastewater processes from 1990 to 2021, but an overall increase due to waste-to-energy operations, whereas in the U.S.A., both wastewater treatment and solid waste incineration appear to contribute to N₂O emissions.