2011-03-242011-03-242007-02-16CARDOSO, Simone de Aviz. Modelagem e simulação do processo de separação por membrana difusa polimérica para a extração de metais. Orientador: João Nazareno Nonato Quaresma. 2007. 73 f. Dissertação (Mestrado em Engenharia Química) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2007. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/2025. Acesso em:.http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2025Metal extraction process using polymeric membranes is analyzed by using the lines-Gear method in the solution of the related equations of specie conservations. The mathematical modeling of the physical problem is done by considering the diffusion process of metals in polymeric membranes in order to extract metals, such as Cd (II), Au (III) and Pd (II) from acid solutions. Therefore, the behavior of concentration profiles of metals to be extracted from the feeding phase is discussed in the light of the influence of relevant parameters in the extraction process, such as, composition and thickness of the membrane, diffusion coefficient and constant extraction. Comparisons with previously reported results in the literature for typical situations are also performed. The obtained results were very satisfactory when they were compared with other found results in the literature.porAcesso AbertoMembranas (Tecnologia)ExtraçãoMetaisDiferenças finitasMembranes (Technology)ExtractionMetalsFinite differencesDissertaçãoCNPQ::ENGENHARIAS::ENGENHARIA QUIMICA::PROCESSOS INDUSTRIAIS DE ENGENHARIA QUIMICA