Zealita A
Mostrando 13-15 de 15 artigos, teses e dissertações.
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13. Removal of Nickel and Zinc Using Natural Zeolite Estilbita Through the Process of Ionic Exchange / RemoÃÃo de NÃquel e Zinco Utilizando ZeÃlita Natural Estilbita AtravÃs do Processo de Troca IÃnica
One of the most serious problems of the modern age in environmental pollution; water contamination by industrial wastes is of great international concern. Frequently contaminants are heavy metals with a concentration in excess of that established by Legislation. The health problems are associated with heavy metal pollutants such as mercury, lead, zinc, nicke
Publicado em: 2003
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14. RemoÃÃo de Enxofre da Gasolina em Coluna de Leito Fixo, com uso de Adsorventes ZeolÃticos
The emission of poisons like SOx and hydrocarbons from automotives vehicles is at the moment one of the major sources of atmospheric pollution. The SOx, for instance, is responsible for corrosion in cars, industrial facilities and acid rains. So, during the last years the environmental protection agencies have reduce drastically the levels of permitted emiss
Publicado em: 2003
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15. RemoÃÃo de enxofre na mistura propanotiol/ciclohexeno em sistema contÃnuo a leito fixo utilizando adsorvente NiO/NaY / Sulphur removal in the propanotiol/ciclohexeno mixture in continuous system the fixed stream bed using adsorvente NiO/NaY
A qualidade do ar e os conceitos de desenvolvimento sustentÃvel tÃm influenciado as regulamentaÃÃes de emissÃes veiculares. A AgÃncia de ProteÃÃo Ambiental americana (EPA) anunciou novas legislaÃÃes para reduzir o nÃvel de enxofre na gasolina e no diesel, atà o ano de 2006 e o Brasil tem evoluÃdo com regulamentaÃÃo similar. HidrodessulfurizaÃ
Publicado em: 1989