Comportamiento ambiental de lodos de fundición estabilizados/solidificados
- Coz Fernández, Alberto
- Ana Andrés Payán Director
- Ángel Irabien Gulías Director
Defence university: Universidad de Cantabria
Fecha de defensa: 13 July 2001
- Arturo Romero Salvador Chair
- Javier R. Viguri Fuente Secretary
- José Vale Parapar Committee member
- Cristina Gutiérrez-Cañas Mateo Committee member
- José Francisco Cambra Ibáñez Committee member
Type: Thesis
Abstract
The aim of this work has been the study of the treatment of foundry sludge coming from after wet cleaning of gases of the furnace in foundry activities. Previously, the hazardous of the waste material has been evaluated. Later, different treatments have been studied and the environmental evaluation have been conducted. Foundry sludge is an ecotoxical waste due to inorganic (basically zinc) and organic (phenols) pollutants, being able to establish mathematical relationships between the ecotoxicity and the concentration of zinc and phenols, both in waste and end-products. Among the different technologies for the treatment, stabilisation/solidification processes with lime or cement as binders are very interesting technologies for waste of mixed character (organic and inorganic). An exhaustive study of different additives used in these processes has been carried out and different formulations have been developed in order to inertise the waste materials, concluding with the relationships between formulation and environmental evaluation and obtaining a patent.