Fatores de retardamento e coeficientes de dispersao-difusao de metais pesados em residuos da construcao civil e demolicao



Título del documento: Fatores de retardamento e coeficientes de dispersao-difusao de metais pesados em residuos da construcao civil e demolicao
Revista: Revista ambiente & agua
Base de datos: PERIÓDICA
Número de sistema: 000331096
ISSN: 1980-993X
Autores: 1
2
2
2
2
3
Instituciones: 1Universidade do Estado de Minas Gerais, Belo Horizonte, Minas Gerais. Brasil
2Universidade Federal de Vicosa, Vicosa, Minas Gerais. Brasil
3Universidade Estadual do Sudoeste da Bahia, Vitoria da Conquista, Bahia. Brasil
Año:
Volumen: 5
Número: 2
Paginación: 77-86
País: Brasil
Idioma: Portugués
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Considering the possibility of using the construction and demolition waste (CD) as "chemical barrier" to pollutants in landfill, the influence of the CD in the parameters of the transport of heavy metals in the leachate (leached + rainwater infiltrated) produced by urban solid waste newly collected was investigated. For this, three size fractions of CD (0.5 to 1; 2 to 4 and 4 to 7.5 mm) were used and leachate in the average concentrations of 0.146 mg L-1 for Cu, 0.046 mg L-1 of Cd, 17.2 mg L-1 Zn and 0.135 mg L-1 Pb. The results enabled to conclude that the magnitude of the retardation factors for the metals followed the sequence: Pb>Cu>Zn>Cd; the increase in granulation fractions in BD resulted in smaller retention factor
Disciplinas: Biología,
Ingeniería
Palabras clave: Ingeniería ambiental,
Ingeniería civil,
Demolición,
Manejo de desechos,
Escombros,
Metales pesados,
Coeficiente de dispersión
Keyword: Biology,
Engineering,
Civil engineering,
Environmental engineering,
Demolition,
Waste management,
Rubble,
Heavy metals,
Dispersion coefficient
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