The role of recycling to minimize greenhouse gas emission in MSW management: A case study of Surabaya City

Recycling, an upstream approach in the MSW management hierarchy, has become a concern for the Indonesian government. Following the guidance of national policy and strategy for MSW, a study on the impact of recycling to minimize GHG emissions was carried out for Surabaya City. By using the condition in 2020 as the baseline and upgraded waste composition data, the calculation indicates that increasing the recycling rate heightens the contribution of recycling in minimizing total GHG emissions. The increase of recycling rate from 24% to 30% will give emission reduction from 8.32% to 10.50%. A successful implementation of 30% recycling rate in 2025 will save -107,550 tonnes CO2-eq. In order to achieve the expected savings, it is suggested that 30 new ITFs be added to accommodate 248,228.85 tonnes of waste (assuming that each facility has a capacity of 20 tonnes per day).