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	Provedor de dados Anais da ABC (AABC) (2) Autor Cattaneo,Fabio (1) Jommi,Cristina (1) Lima,Sidarta A. (1) Moyne,Christian (1) Murad,Marcio A. (1) Stemmelen,Didier (1) Tamagnini,Claudio (1) Mais... Palavra-chave Electro-osmosis (2) Electrical double layer (1) Experimental investigation (1) Finite element analysis (1) Homogenization (1) Kaolinite (1) Nernst-Planck (1) Poisson-Boltzmann (1) Theoretical model (1) Unsaturated soils (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2010 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última A model for coupled electro-hydro-mechanical processes in fine grained soils accounting for gas generation and transport Anais da ABC (AABC) Tamagnini,Claudio; Jommi,Cristina; Cattaneo,Fabio. A theoretical and numerical model is developed for the quantitative analysis of coupled processes taking place in active waste containment systems, such as electrokinetic barriers or fences, in which alow intensity DC current is circulated across the clay barrier to move polar and non-polar contaminants. A novel feature of the proposed approach is the allowance for the presence of air in the pore space. Under unsaturated conditions, all transport coefficients involved in the electrokinetic process are strongly dependent on the degree of saturation of pore liquid. In order to assess the predictive capability of the proposed theory and to appreciate the impact of gas production at the electrodes, a series of numerical simulations of simple onedimensional... Tipo: Info:eu-repo/semantics/article Palavras-chave: Electro-osmosis; Experimental investigation; Theoretical model; Finite element analysis; Unsaturated soils. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000100014 Electro-osmosis in kaolinite with pH-dependent surface charge modelling by homogenization Anais da ABC (AABC) Lima,Sidarta A.; Murad,Marcio A.; Moyne,Christian; Stemmelen,Didier. A new three-scale model to describe the coupling between pH-dependent flows and transient ion transport, including adsorption phenomena in kaolinite clays, is proposed. The kaolinite is characterized by three separate nano/micro and macroscopic length scales. The pore (micro)-scale is characterized by micro-pores saturated by an aqueous solution containing four monovalent ions and charged solid particles surrounded by thin electrical double layers. The movement of the ions is governed by the Nernst-Planck equations, and the influence of the double layers upon the flow is dictated by the Helmholtz-Smoluchowski slip boundary condition on the tangential velocity. In addition, an adsorption interface condition for the Na+ transportis postulated to capture its... Tipo: Info:eu-repo/semantics/article Palavras-chave: Electrical double layer; Electro-osmosis; Homogenization; Kaolinite; Nernst-Planck; Poisson-Boltzmann. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000100016 Registros recuperados: 2 Primeira ... 1 ... Última

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