Analisis Emisi Gas Dan Residu Pengolahan Sampah Menggunakan Teknologi Konversi Termal Melalui Sistem Pirolisis Dengan Bahan Baku Sampah Plastik Jenis Polystyrene Dan Low Density Polyethylene = Gas Emission And Residual Analysis Of Solid Waste Management By Thermal Conversion Technology Through Pyrolysis System With Polystyrene And Low Density Polyethylene Plastics As Raw Materials