Landfills are a significant source of methane emissions globally as waste decomposes, but they can be transformed into managed systems with gas-capture systems and biocovers to reduce emissions. Restoring vegetation can further enhance carbon uptake and ecosystem recovery. The success of the Jardim Gramacho landfill in Rio de Janeiro, which reduced methane emissions through gas-capture systems and mangrove restoration, demonstrates how legacy waste sites can be stabilized to curb emissions and provide ecological and community benefits. This solution involves covering landfills and capturing methane for combustion, effectively reducing emissions at the source.
https://climatetrace.org/news/landfill-covering-and-methane-capture