Ocorrência de metais tóxicos no entorno de aterros não controlados
Fecha
2022Autor
http://lattes.cnpq.br/0244835187340289
https://orcid.org/0000-0001-7732-8520
FERREIRA, Lúrian Sâmia de Lacerda
Metadatos
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The population growth in urban centers brings as a consequence the increase in the solid waste
disposal and the need for sites prepared for the proper disposal ofthese wastes in order to avoid
pollution and environmental degradation through the contact of highly toxic contaminating
compounds with the soil and, consequently, with the water, through leachate. The correct
destination of these residues happens when they are disposed of in places called sanitary
landfills, projected and adequate for this purpose, reducing any possible environmental impacts
on the environment. When there is no minimum adequacy of the environment with soil sealing
processes and leachate channeling, this environment used to dispose of waste is called a
“dump”. In Brazilian territory the, presence of dump sites is still very common, even after the
implementation of the National Policy for Solid Waste, which determines the substitution of
these sites by landfills. Thus, the following work aims to make a systematic review that, through
data obtained from analysis and research of articles and other scientific papers in the period
2012 to 2022, seeks to assess the concentration of toxic metals Cadmium (Cd), Lead (Pb),
Chromium (Cr) and Mercury (Hg) in soil and groundwater in areas of operation of dumps in
the Brazilian territory through the percolation of leachate, comparing them with the guideline
values of maximum concentrations allowed in the Brazilian legislation.