Table 2.

Waste management scenario description.

Scenario	Description
Business-as-usual (BAU)	BAU represents the current situation of MSW management. MSW is assumed to be unsorted in this scenario. In this case, waste management would proceed as normal practice in 2030, in which all MSW would be disposed of in a landfill.
Scenario1 (On-site waste sorting + Landfill)<	S1 aims to increase the amount of on-site waste sorting (x%) in both cities. In this scenario, MSW is assumed to be sorted at the sources of waste generation. Where paper, plastic, metal or glass have been separately collected, they must not be mixed with other waste or materials, such as food waste. The combination of composting, recycling is proposed as an option for on-site sorting. Finally, the secondary waste amounts from on-site sorting would be disposed of in a landfill without off-site sorting (Figure 2).
Scenario2 (Off-site waste sorting + Landfill)	S2 aims to increase the amount of off-site waste sorting (Y%) in both cities. MSW is assumed to be sorted at the landfill site where waste is sorted and dumped. The waste amounts from off-site sorting would be disposed of in a landfill without on-site sorting. In this scenario, the combination of composting, recycling, and refuse-derived fuel (RDF) is proposed for off-site sorting (Figure 3).
Scenario3 (On-site waste sorting + Off-site waste sorting + Landfill)	S3 aims to increase the amount of on-site waste sorting (x%) and off-site waste sorting y(%) in both cities. In this scenario, the proportion of on-site waste sorting is assumed equal to that of off-site waste sorting (x = y). For the process in scenario 3, waste is sorted at the source of waste generation, and the secondary waste amounts from on-site sorting are separated at the landfill site where wastes are sorted and dumped. Then, it would be disposed of in a landfill (Figure 4).