Salt and water permeability in reverse osmosis membranes

Voros, NG; Maroulis, ZB; Marinos-Kouris, D

dc.contributor.author	Voros, NG	en
dc.contributor.author	Maroulis, ZB	en
dc.contributor.author	Marinos-Kouris, D	en
dc.date.accessioned	2014-03-01T01:12:14Z
dc.date.available	2014-03-01T01:12:14Z
dc.date.issued	1996	en
dc.identifier.issn	0011-9164	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12029
dc.subject	Cellulose-acetate membranes	en
dc.subject	Reverse osmosis	en
dc.subject	Transport coefficients modeling	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Water Resources	en
dc.subject.other	Brines	en
dc.subject.other	Calculations	en
dc.subject.other	Desalination	en
dc.subject.other	Flow of fluids	en
dc.subject.other	Ions	en
dc.subject.other	Mass transfer	en
dc.subject.other	Mathematical models	en
dc.subject.other	Mechanical permeability	en
dc.subject.other	Reverse osmosis	en
dc.subject.other	Brackish water	en
dc.subject.other	Brine concentration	en
dc.subject.other	Brine flux	en
dc.subject.other	Cellulose acetate membranes	en
dc.subject.other	Permeate concentration	en
dc.subject.other	Permeate flux	en
dc.subject.other	Osmosis membranes	en
dc.subject.other	desalination	en
dc.subject.other	membranes	en
dc.subject.other	modelling-mathematical	en
dc.subject.other	permeability	en
dc.subject.other	reverse osmosis	en
dc.title	Salt and water permeability in reverse osmosis membranes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0011-9164(96)00037-9	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0011-9164(96)00037-9	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The permeate flux, permeate concentration, brine flux, and brine concentration have been experimentally determined. A pilot-scale reverse osmosis configuration consisting of 18 tubular-type cellulose acetate membranes has been used for the desalination of brackish water. The transport parameters (i.e., mass transfer coefficients) as well as the permeability coefficients (of water and salt) in reverse osmosis membranes, useful for the prediction of the membrane performance and membrane characterization, have been calculated by fitting the model predictions to the experimental results. A classical model, applicable for reverse osmosis systems, has been used. The effect of the operating conditions (pressure, flowrate, and concentration) on the model parameters has also been studied. Through the incorporation of six adjustable parameters to the model, the prediction results have been found to be in good agreement with the experimental data within the accuracy of the experimental determination. Finally, a study of the membrane performance on the rejection of six different ions (chloride, sodium, calcium, magnesium, bicarbonate, and sulphate) has also been made. The permeability parameter values for these ions have been determined and are reported. This option also yielded quite satisfactory predictions, as far as the permeate concentrations and flowrates are concerned.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Desalination	en
dc.identifier.doi	10.1016/0011-9164(96)00037-9	en
dc.identifier.isi	ISI:A1996UR90500001	en
dc.identifier.volume	104	en
dc.identifier.issue	3	en
dc.identifier.spage	141	en
dc.identifier.epage	154	en