I’d love to read up on that. As far as I know some municipalities will use the landfill methane for energy but capturing the carbon is not done. Please share your source.
I do agree for landfills that it is better to capture that methane and make use of. But that is such a small portion of natural gas use that it is a rounding error. And the problem with us using LNG and gaseous methane is that it leaks like a mother fucker. It is marketed as a greener alternative compared with coal. Unfortunately because there is so much leakage, it is basically a wash when it comes to greenhouse gas emissions.
We could also cut landfill methane emissions by composting food waste and not having it in the landfill. Less methane produced, less to burn off, and less to leak out into the atmosphere.