Caracterização químicas das frações tipo solo mineradas de aterro sanitário visando a aplicação como fertilizante ou condicionador de solo

Brazil is actively working to improve municipal solid waste (MSW) management and extract value from it. Landfill mining, the process of recovering materials from landfills, is a potential solution. One valuable component is landfill-mined soil-like fractions (LFMSF). These fractions, composed of a mixture of organic materials, soils, debris, and small fragments of metals, plastics, and glass, offer potential benefits for agriculture. A chemical analysis of LFMSF (D < 19mm) after eight years of landfilling (LFMSF-8) from the Delta A sanitary landfill in Campinas, Southeastern Brazil, revealed its nutrient content. The results showed that LFMSF-8 contains essential elements for plant growth. Notably, it meets iron (Fe) concentration requirements for remineralizers. Moreover, LFMSF-8 exhibits higher levels of calcium (Ca), iron (Fe), manganese (Mn), boron (B), and cation exchange capacity (CEC) compared to traditional organic fertilizers. Importantly, it presents low levels of potentially toxic elements (PTE). These findings suggest that LFMSF can be a valuable secondary nutrient source for agriculture. Its responsible use can contribute to a more sustainable and circular economy.