SciELO - Scientific Electronic Library Online

 
vol.17 número38Análisis de indicadores para determinar el grado de sostenibilidad en concretos especialesModelo de producción social de habitat frente al modelo de mercado en la construcción de vivienda de interés social índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Tecnura

versión impresa ISSN 0123-921X

Resumen

GARCIA UBAQUE, César Augusto; GARCIA VACA, María Camila  y  VACA BOHORQUEZ, Martha Lucía. Encapsulation of sludge from the sewage treatment plants of the clay matrices automotive industry. Tecnura [online]. 2013, vol.17, n.38, pp.26-36. ISSN 0123-921X.

This article presents results of a pilot study, where metals leaching from ceramic pieces were made with different mixes of slugde and clay from the sewage treatment plant G.M. COLMOTORES in Bogotá (Colombia). The slugde have been stabilized and solidified in clays and cook in a Hoffman Furnace oven for the fabrication of bricks. The proportions of mixture of clay and sludge for the fabrication of bricks used were: 99:1, 95:5, 90:10, 80:20 and 60:40. Then, the bricks were burned at temperatures between 50 to 1100 ° C. Moreover, clays, sludge and bricks were tested by: X ray diffraction (XRD), X-ray Fluorescence X (XRF), Thermogravimetry (TG), Differential Thermal Analysis (DTA), Atomic Absorption Spectroscopy (AA) and Scanning Electron Microscopy (SEM). Finally, other leaching tests were performed in the bricks (Toxicity Characteristic Leaching Procedure - TCLP) for the determination of heavy metals. Results from this study showed that the clay had a high affinity with the sludge and the bricks showed low levels of leaching. Also, it was considered that 95:5 of clay and sludge was the best mixing ratio for all the metals. The metal with lowest removal percentage was selenium and the highest removal percentages were arsenic, nickel, chrome, zinc and cadmium.

Palabras clave : binders; waste disposal; materials testing; ceramic materials; clay products.

        · resumen en Español     · texto en Español     · Español ( pdf )