Portal de Periódicos da CAPES

Analysis of Chemical Mobility of Leachate Contaminants in Gneiss Saprolite of Belo Horizonte Solid Waste Landfill (CTRS BR 040), South-Eastern Brazil

2014; Volume: 37; Issue: 1 Linguagem: Inglês

10.28927/sr.371051

2675-5475

Quênia C.G. Ferreira, Luís de Almeida Prado Bacellar,

Recycling and utilization of industrial and municipal waste in materials production

Municipal solid waste landfill is a potential source of contamination due to the harmful elements of the leachate, such as trace elements. In the Belo Horizonte landfill, the waste is partially disposed of directly on gneiss saprolites, with lower capacity to mitigate contaminants than upper soil horizons. Column tests were made to analyse the attenuation capacity of this saprolite. The analysis of the chemical elements concentration in soil and leached effluent after the tests and the calculation of the saturation index with PHREEQC software showed the ability of saprolite to mitigate the contamination, mainly by chemical precipitation and immobilization in the colloidal fraction.