>>1234660It really depends on the landfill and practices used. If biodegradable material is buried then it will degrade in the landfill. If you only worked there for a year then maybe it wasn't very active yet.
>>1234731Biogas forms from anaerobic bacteria. If air was present we'd be getting useless CO2 instead of useful CH4 and H2.
>>1242121Or just send it to a Polish/Eastern European landfill.