Notícias

Banca de DEFESA: ALI DEHGHAN GHANAT KAMANI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE: ALI DEHGHAN GHANAT KAMANI
DATA: 29/01/2014
HORA: 14:00
LOCAL: Sala de Treinamento do Nupeer
TÍTULO:

A Stochastic Model for Pore Blocking and Permeability Reduction


PALAVRAS-CHAVES:

 Mathematical modeling, filtration, porous media, membranes, size exclusion, particle and pore size distributions, permeability reduction.


PÁGINAS: 118
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

Modeling transport of particulate suspensions in porous media is essential for understanding various processes of industrial and scientific interest. During these processes, particles are retained due to mechanisms like size exclusion (straining), adsorption, sedimentation and diffusion. In this thesis, a mathematical model is proposed and analytical solutions are obtained. The obtained analytic solutions for the proposed model, which takes pore and particle size distributions into account, were applied to predict the particle retention, pore blocking and permeability reduction during the dead-end microfiltration in membranes. Various scenarios, where the different particle and pore size distributions were injected, were studied. The obtained results showed that pore blocking and permeability reduction are highly influenced by the initial pore and particle size distributions. This feature was observed even when different initial pore and particle size distributions with the same average pore size and injected particle size were considered. Finally, a mathematical model for predicting equivalent permeability in porous media during particle retention (and pore blocking) is proposed and the obtained solutions were applied to study the permeability decline in different scenarios.


MEMBROS DA BANCA:
Externo à Instituição - ADOLFO PUIME PIRES - UENF
Presidente - 1288120 - ADRIANO DOS SANTOS
Externo ao Programa - 1714865 - FLAVIO MEDEIROS JUNIOR
Notícia cadastrada em: 19/12/2013 15:16
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