Precipitation of calcium carbonate on reverse osmosis membranes

Mitsoyannis, E; Saravacos, GD

dc.contributor.author	Mitsoyannis, E	en
dc.contributor.author	Saravacos, GD	en
dc.date.accessioned	2014-03-01T01:05:38Z
dc.date.available	2014-03-01T01:05:38Z
dc.date.issued	1977	en
dc.identifier.issn	0011-9164	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/8914
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0017531756&partnerID=40&md5=32ef4a2681b09c48dc529ebbf67b2894	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Water Resources	en
dc.subject.other	CALCIUM COMPOUNDS	en
dc.subject.other	CHEMICAL REACTIONS - Reaction Kinetics	en
dc.subject.other	MEMBRANES	en
dc.subject.other	OSMOSIS, REVERSE	en
dc.subject.other	WATER TREATMENT - Salt Removal	en
dc.subject.other	PRECIPITATION	en
dc.subject.other	REVERSE OSMOSIS CELLS	en
dc.subject.other	DESALINATION	en
dc.title	Precipitation of calcium carbonate on reverse osmosis membranes	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1977	en
heal.abstract	The precipitation of calcium carbonate from aqueous solutions was investigated in a laboratory reverse osmosis cell. Solutions of sodium chloride and calcium bicarbonate, resembling hard brackish water, were desalted in the batch test cell using cellulose acetate membranes at a pressure of 40 bar. Desalting of hard water resulted in a significant reduction of the water flux due to the precipitation of calcium carbonate on the membrane. Precipitation is caused by the high permeability of carbon dioxide through the membrane, resulting in a higher pH of the brine. The experimental results are related to the chemical equilibrium of calcium bicarbonate, the mass transfer of the various species through the membrane, and the crystallization kinetics of calcium carbonate. © 1977.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Desalination	en
dc.identifier.isi	ISI:A1977DW44000001	en
dc.identifier.volume	21	en
dc.identifier.issue	3	en
dc.identifier.spage	235	en
dc.identifier.epage	240	en