Boron removal efficiency from Red Sea water using different SWRO/BWRO membranes

Handle URI:
http://hdl.handle.net/10754/562440
Title:
Boron removal efficiency from Red Sea water using different SWRO/BWRO membranes
Authors:
Rahmawati, Karina; Ghaffour, Noreddine ( 0000-0003-2095-4736 ) ; Aubry, Cyril; Amy, Gary L.
Abstract:
Seawater reverse osmosis (SWRO) desalination process provides high quality of fresh water. However, due to some operational constraints mainly scaling control some trace contaminant removal, such as acceptable boron concentration, cannot be achieved in a single pass SWRO system. The objective of this study was to investigate the efficiency of five difference reverse osmosis (RO) membranes (seawater SW and brackish water BW) provided by different manufacturers for boron removal. RO experiments using pretreated real Red Sea water were conducted in parallel to compare membrane performance under the same operating conditions. As expected, results showed that boron rejection increased as the feed pH increased. This was caused by dissociation of boric acid to negatively charged borate ions and more negatively charged membrane surface at elevated pH which enhanced boron rejection. Single pass RO system, with and without elevating the pH, may not be sufficient for two reasons. First, boron concentration in permeate does not fulfill local regulations (<0.5ppm). Second, severe scaling occurs due to operation in alkaline condition, since Ca 2+ and Mg 2+ concentrations are still high to cause salts precipitation. Techno-economical study was performed to select the best configuration and membrane giving the highest performance in terms of boron and TDS rejections and energy consumption. © 2012 Elsevier B.V.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division; Chemical and Biological Engineering Program
Publisher:
Elsevier BV
Journal:
Journal of Membrane Science
Issue Date:
Dec-2012
DOI:
10.1016/j.memsci.2012.09.004
Type:
Article
ISSN:
03767388
Appears in Collections:
Articles; Chemical and Biological Engineering Program; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorRahmawati, Karinaen
dc.contributor.authorGhaffour, Noreddineen
dc.contributor.authorAubry, Cyrilen
dc.contributor.authorAmy, Gary L.en
dc.date.accessioned2015-08-03T10:38:17Zen
dc.date.available2015-08-03T10:38:17Zen
dc.date.issued2012-12en
dc.identifier.issn03767388en
dc.identifier.doi10.1016/j.memsci.2012.09.004en
dc.identifier.urihttp://hdl.handle.net/10754/562440en
dc.description.abstractSeawater reverse osmosis (SWRO) desalination process provides high quality of fresh water. However, due to some operational constraints mainly scaling control some trace contaminant removal, such as acceptable boron concentration, cannot be achieved in a single pass SWRO system. The objective of this study was to investigate the efficiency of five difference reverse osmosis (RO) membranes (seawater SW and brackish water BW) provided by different manufacturers for boron removal. RO experiments using pretreated real Red Sea water were conducted in parallel to compare membrane performance under the same operating conditions. As expected, results showed that boron rejection increased as the feed pH increased. This was caused by dissociation of boric acid to negatively charged borate ions and more negatively charged membrane surface at elevated pH which enhanced boron rejection. Single pass RO system, with and without elevating the pH, may not be sufficient for two reasons. First, boron concentration in permeate does not fulfill local regulations (<0.5ppm). Second, severe scaling occurs due to operation in alkaline condition, since Ca 2+ and Mg 2+ concentrations are still high to cause salts precipitation. Techno-economical study was performed to select the best configuration and membrane giving the highest performance in terms of boron and TDS rejections and energy consumption. © 2012 Elsevier B.V.en
dc.publisherElsevier BVen
dc.subjectBoron removalen
dc.subjectBWROen
dc.subjectDesalinationen
dc.subjectSWROen
dc.subjectWater quality standardsen
dc.titleBoron removal efficiency from Red Sea water using different SWRO/BWRO membranesen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentChemical and Biological Engineering Programen
dc.identifier.journalJournal of Membrane Scienceen
kaust.authorRahmawati, Karinaen
kaust.authorGhaffour, Noreddineen
kaust.authorAubry, Cyrilen
kaust.authorAmy, Gary L.en
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