Characterization of the selectivity of microsieves using a cross-flow microfiltration system

Brazilian Journal of Chemical Engineering

L. E. Gutierrez-rivera²  M. E. Katekawa¹  M. A. Silva¹  L. Cescato² 

[1] ,Universidade Estadual de Campinas Instituto de Física Gleb Wataghin Laboratório de ÓpticaCampinas SP ,Brasil

关键词: Membrane;    LIGA process;    Particle separation;    Retention factor;   

DOI  :  10.1590/S0104-66322010000400019

来源: SciELO

【 摘 要 】

Filtration through membranes is a process largely employed in the food and chemical industry to separate particles. Sieves present some advantages in relation to conventional membranes such as high homogeneity in the pore sizes, smooth surfaces, straight-through pores, etc. In this paper we compare the selectivity in the exclusion of particles by size of sieves with circular and slit pores with the same porosity. The selectivity was investigated by filtering a mixture of rutin in water in a cross-flow filtration system. The particle-size distribution of the rutin solution was measured before and after microfiltration. The results showed a high efficiency in the size exclusion of particles for microsieves with circular pores. The filtration through a commercial membrane (net filter) with similar characteristics was also characterized for comparison.

【 授权许可】

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