Full Description

Membrane processes with nanofiltration (NF) and tight-ultrafiltration (UF) membranes were proven to be very effective in removingorganic electrolytes such as acidic pharmaceuticals and/or natural organic matter (NOM). This highefficiency results from both back-diffusion and electrostatic repulsion in the concentrationpolarization layer, and hindered transport of pharmaceuticals and NOM in membrane pores. In thetransport equation for charged membranes, membrane physicochemical structures, solution chemistries,and solute characteristics may be important transport parameters. The filtration of aqueous mixturescontaining charged solutes (acidic pharmaceuticals), NOM, and/or strong electrolytes was conducted. Thisstudy verified several hypotheses that included the effect of membrane molecular weight cut-off (MWCO) and NOM, with respect to membrane performance such as ibuprofen and NOM rejections. Includes 10 references, tables, figures.

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Edition: Vol. - No. Published: 03/01/2005 Number of Pages: 7File Size: 1 file , 430 KB