Potential identification of landfill mining result in zone 1 Piyungan landfill using composition analysis, waste characteristic analysis and soil stability analysis

DI Yogyakarta is the largest student and tourism city in Indonesia that produces 2,953 tons of waste per day. Increasing waste generation is not matched with adequate landfill sites. Landfill mining and utilization of excavated waste is a method that can be used to overcome the problems in the landfill. Combustible waste could be used as renewable energy by processed it into RDF (refuse-derived fuel), and the accumulated soil can be used again to compost. Therefore it is necessary to do composition analysis, proximate analysis, calorific value analysis to see the potential of combustible waste into raw material RDF and soil stability analysis with compost maturity method to know whether the land of TPA is stable enough to be composted. The potential of RDF raw materials from combustible waste is known by performing composition analysis, proximate analysis, and calorific value analysis. Proximate analysis was performed with water content test, ash content, volatile content and fixed carbon. Heat value analysis using calorimeter bomb and composition analysis according to SNI 19-3964-1994 was done. The soil stability analysis using compost maturity method was done using Verstraete method during 20 days of incubation.