Optimisation of In-Vessel Composting of Municipal Solid Wastes (MSW)

The aim of this study is to recover nutrient resources by optimizing the chemical oxygen demand (COD) through composting Municipal Solid Wastes (MSW). The study involved 84 tests on four sets of samples, focusing on aeration period, percentage of porous materials, and moisture content. The composting process was carried out using an in-vessel system at a temperature of 70 °C for a period of 14 days. The results indicate that the best aeration period is 8 hours. The addition of porous materials should be limited to 10% of the total weight, as exceeding or reducing this amount can have a negative impact on the process. Furthermore, the research demonstrates that COD can be reduced by approximately 50% through this composting approach.