02163nab a2200289 i 4500 BR-BrBNA 20260504105025.0 260504b2019 bl.qr|pooa||| 00| 0 eng | BR-BrBNA eng P35 Campos, Thaís Chaer, Guilherme Leles, Paulo dos Santos Silva, Marcelo Santos, Felipe Leaching of Heavy Metals in Soils Conditioned with Biosolids from Sewage Sludge Publicação on-line; 29 ref.; 3 tables; 1 illus.; Summary (En) ABSTRACT A promising use of biosolids is as organic fertilizer in agricultural and forestry activities. However, its composition might contain several pollutants, especially heavy metals, which may result in an increase in the concentrations of these elements in the soil and the risk of groundwater contamination. This study aimed to determine the leaching levels of ions in a Ferralsol (clayey texture) and in a Planosol (sandy texture). The experiment was conducted in a greenhouse at Embrapa Agrobiologia, Seropédica, Rio de Janeiro state. Soils were packed in PVC columns and received 2 L/column of biosolids. The concentrations of heavy metals present in the biosolids composition were below the limits established by the legislation (CONAMA 375). In addition, the performed simulations showed the absence of contamination risk of soil or groundwater and surface water, according to the limits allowed by CONAMA 375. However, it should be emphasized the potential of nitrate leaching. Keywords: contamination risk, chemical elements percolation, test with columns, risk analysis. CONTAMINAÇÃO SOLO LIXIVIAÇÃO ANÁLISE DE RISCO 2929 347954 Rio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994 2025-0453 Floresta e Ambiente (Brazil) 1415-0980 / ISSN 2179-8087 0nline v. 26(special number n.1) p. 1-10; (2019) BR2026001314 https://www.scielo.br/j/floram/a/zfTSGnmzY4xSds8cpr8KkhQ/?format=pdf&lang=en ANA 341645 341645