[zeotroph]

...which releases methane (CH4) into the atmosphere since it is in an anaerobic atmosphere. And then the cycle is no longer the neutral CO2 -> coffee bean -> CO2 but it added CH4 to the atmosphere which heats the planet.

Ideally all bio waste is industrially composted and the generated CH4 used to generate electricity and heat, but sequestering it is also okay.

[fodkodrasz]

CH4 decomposes to CO2 (and water) in ~7 years in the atmosphere.

[zeotroph]

And while it is there it has > 20x the impact of CO2.

Just don't dump organic waste into landfills.