Removal of Cu and Zn from swine raising wastewater using organic filters.
Environ Technol
; 24(2): 171-8, 2003 Feb.
Article
em En
| MEDLINE
| ID: mdl-12666787
ABSTRACT
Rice husks, coffee bean skins, sugar cane bagasse, maize cobs, saw dust and fine charcoal dust were evaluated as filters for the removal of heavy metals (Cu and Zn) from the waste water of swine raising installations. The specific mass, pH and the sum of bases and removable acids were determined to characterize each of the filter materials. Each filtering material was placed in a 100 mm diameter, 600 mm long, PVC column to a height of 500 mm under 12,500 N m(-2) of compression. Chemical and physical analyses were determined on effluent samples collected for each 1.5 l up to a total of 15 l. The organic materials reduced the concentration of sediment solids (> 90%), total solids (up to 33%) and Cu (up to 43.6%) of the inffluent but had little or no effect on Zn concentration.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Zinco
/
Eliminação de Resíduos Líquidos
/
Purificação da Água
/
Cobre
Limite:
Animals
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article