Journal
WATER RESEARCH
Volume 43, Issue 2, Pages 267-276Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2008.09.033
Keywords
Ultrafiltration; Nanofiltration; Phenyl-ureas; Permeate fluxes; Mass adsorbed; Resistances
Funding
- Ministero de Educacion y Ciencia of Spain [CTQ 2007-60255]
- Project CONSOLIDER-INGENIO [CSD2006-0044]
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Membrane filtration of four phenyl-urea herbicides (linuron, diuron, chlortoluron, and isoproturon) dissolved in ultrapure water was studied in a laboratory cross-flow device in batch concentration mode (with recycling of the retentate stream). Three UF (MWCO of 20 000, 5000 and 2000 Da) and three NT (MWCO of 150-300 Da) membranes were used. The influence of the main operating conditions (transmembrane pressure, tangential velocity, temperature, pH, and MWCO of the membranes) on the steady-state permeate fluxes and the retention factors of the phenyl-ureas was evaluated. The herbicide mass adsorbed onto the membranes was also determined, and the contribution of the fouling resistance to the total resistance to permeate flux was much lower than the inherent resistance of the clean membranes. (C) 2008 Elsevier Ltd. All rights reserved.
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