I'm no chemist, but, wild guess, you might actually make things worse by favoring decomposition into methane instead of CO2. I would think that a proper soluti

I'm no chemist, but, wild guess, you might actually make things worse by favoring decomposition into methane instead of CO2. I would think that a proper solution would require figuring out how to get all that carbon into a chemical form that is chemically stable and won't biodegrade. The ideal looks a whole lot like coal, I'd guess?