Navegando Teses - Geociências e Meio Ambiente - IGCE por Palavra-Chave "Air - Pollution"
Agora exibindo 1 - 1 de 1
Resultados por página
Opções de Ordenação
ItemTese de doutoradoCaracterização mineralógica e química das fontes de poeira e sua influência na atmosfera da região do polo cerâmico de Santa Gertrudes (SP)(Universidade Estadual Paulista (Unesp), 2015-05-15) Oliveira, Meyre [UNESP]; Zanardo, Antenor [UNESP]; Universidade Estadual Paulista (Unesp)Illiticas clays reserves outcropping in the vicinity of Rio Claro and Santa Gertrudes, were instrumental in the deployment of an Industrial Mining region specialized in the manufacture of flooring and glazed ceramic tiles, which currently accounts for over 50% of national production. While the sharp growth of these industries and the related mining activities, environmental problems also increased as the generation of wastewater, solid waste, and emissions of fluorides and particulates. In this context, this research studied the mineralogical and chemical compositions of the different geological materials, which are present in the ore extraction, transport, industries, and drying environments. Analytical results from the samples was collected in the four environments that are members of ceramic parts production chain characterized them as major emission particulates. Using a sequential sampler (Partisol), MP with diameter less than 10 micrometers were collected in the atmosphere of these areas, for chemical, mineralogical studies and subsequent correlation with the results obtained in the different domains of the productive segment characterization. Analytical techniques such as Xray diffraction, MEV ICP-ES, ICP-MS, and. chromatography for mineralogical and chemical characterization of geological materials, laser diffraction for particle size determination, confirmed that the levels of minerals and their chemical elements featured in both situations are genetically correlated. The inhalable set comprising major elements such as silica, aluminum, iron, titanium, potassium and trace elements such as barium, zirconium, fluoride and other characterized in the local atmosphere originates from the pellet of solid materials such as soils, ceramic materials used for roads to cover and ore during its extraction and exposure in drying area. The presence of fluoride detected in this atmosphere is attributed to emissions of the ceramic industry, ...