Physical and Chemical Characterization of Soil in Urban Solid Waste Disposal Area
Mayara Aline Bones, Willian Fernando de Borba, Pedro Daniel da Cunha Kemerich, Cristiane Carine dos Santos, Jaqueline Ineu Golombieski, Lucindo Somavilla, Marcela de Melo Torchelsen, Claiton Nardini, Luma Schervenski Tejada, Mateus Guimarães da SilvaABSTRACT
Waste generation and subsequent disposal in adequate sites still have limitations in some Brazilian municipalities. Therefore, environmental monitoring of these areas is extremely important, as it helps to preserve the environment. The purpose of this study is to analyze the chemical and physical parameters of soil in a landfill area. For this, soil samples were collected at 10 sampling points, where the concentrations of seven chemical elements (Cadmium, Lead, Cobalt, Copper, Chromium, Nickel, and Zinc) were analyzed, at three depths (0, 50, and 120 cm). Furthermore, granulometry, permeability, and optimum moisture content were determined. The results indicated the presence of a Dystrophic Red Latosol (Oxisol). With 51.00% clay, 28.00% silt, and 21.00% sand, it is classified as a clayey soil, with 32.70% optimum moisture and a 2.11 × 10 −7 cm.s −1 permeability, thus within the values stipulated by current regulations. The chemical elements indicated changes in elements Copper and Nickel, mainly, and Copper may be of natural origin, due to the source material and its weathering products. As for Nickel, the values were similar to those found in research carried out in the same geological formation. Statistical analysis indicated that there was no difference between depths. Therefore, we conclude that the waste disposal activity did not alter the soil natural quality, possibly due to the natural protection system, through the low permeability clayey soil.