Resumo

MIGUEL, Roberto E; PORTA, Atilio A  e  BANDA NORIEGA, Roxana B. Modelo de evaluación de gestión de residuos industriales aplicado en arenas descartadas de fundición. Cienc. docencia tecnol. [online]. 2013, n.46, pp.183-197. ISSN 1851-1716.

Waste foundry sands (WFS), discarded material generated by metal foundries, are disposed in either controlled or uncontrolled landfills. The present study was aimed to chemically analyze the sands and assess their disposal by means of an evaluation model of industrial waste under different climate conditions. Twelve samples were collected and subjected to leach tests to determine phenols and heavy metals concentrations. Ten of them showed concentrations below the regulatory limits of the Hazardous Waste Act. The model found that in areas with extreme vulnerability to pollution of groundwater resources, under humid climate conditions, composite lined landfills should be used to dispose the WFS with concentrations of phenols higher than 0.001 mg.L^-1, and for WFS that use urethane alkyd system with Pb as a constituent.

Palavras-chave : Environmental chemistry; Leach testing; Groundwater resources.