Relatório de Execução Material do Projecto “Respirometria da Libertação de Ácidos e a Utilização de Coberturas Consumidoras de Oxigénio como Método de Prevenir Emissões a Partir de Armazenamento de Resíduos Minerais

• Tipo: Relatório Técnico
• Data: 2008

Autores

A. Fiúza (Autor) FEUP; M. Cristina C. Vila (Autor) FEUP; Aurora Futuro Silva (Autor) FEUP; Alexandre Leite (Autor) FEUP; Joaquim Góis (Autor) FEUP; A. Silva (Autor) FEUP; Cristina Delerue-Matos (Autor) FEUP

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Instituições Associadas

FCT - FCT - Fundação para a Ciência e a Tecnologia

Outras Informações

Abstract (EN): This report is divided in six chapters. The first chapter in introductory and describes the main physical, chemical and biological phenomena involved on the generation of Acid Mine Drainage (AMD) from mining and ore processing wastes. It also refers the main type of tests that can be used to forecast both the capacity and the kinetics of acid drainage. The second chapter describes in detail the testing procedures that can be used to assess the AMD potential and describes its application to ore processing residues from the two most important Portuguese mines in activity (Neves Corvo and Panasqueira). Next chapter (3rd) describes experimental protocols to assess the accelerated dynamics of AMD and the results that were obtained with the same wastes. In the fourth part it is described how respirometry can be used to assess the relative importance and kinetics of sulphide oxidizing bacteria, using either continuous respirometry or soil bottle respirometers. The fifth chapter describes experiments conducted at pilote-scale, in an open-air experimental station conceived specially for this purpose. The measurements obtained in this installation with the wastes without cover, with a single cover and a multiple cover, are compared with the results obtained from laboratorial procedures. Finally, in the last chapter, models for diffusion of oxygen through the wastes, through an impermeable cover (clays) and through an organic cover, are presented as well an integrated model of diffusion through a multi-layer cover.

Idioma: Português

Tipo (Avaliação Docente): Científica

Nº de páginas: 110