Mass Transfer Analysis of Polyether Sulfone and Polyamide Membranes Modified by Ion Beam Irradiation

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Title:	Mass Transfer Analysis of Polyether Sulfone and Polyamide Membranes Modified by Ion Beam Irradiation
Author:	King, Stanley Wayne
Description:	The effect of ion beam irradiation on the performance of two commercial nanofiltration membranes was investigated. This study focused on four major targets of water treatment: monovalent cations, divalent cations, dissolved organic carbon (DOC) and bacteria. Membrane performance was evaluated by measuring permeability, selectivity, and fouling. Irradiation of the polyether sulfone (PES) membrane revealed similar removal characteristics for all raw water components when compared to the unmodified membrane. There was a decrease in membrane permeability, while the resistance to fouling was improved. Irradiation of the polyamide (PA) membrane caused a slight reduction in selectivity for monovalent cations and a slight improvement for divalent cations and dissolved organic carbon. While selectivity slightly increased, the increase in membrane permeability suggested that a shift of the permeability/selectivity membrane-characteristic curve occurred due to irradiation.
Permanent Link:	http://rave.ohiolink.edu/etdc/view?acc_num=toledo1083875419 http://hdl.handle.net/2374.OX/19327
Date:	2004

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