Boron removal in new generation reverse osmosis (RO) membranes using two-pass RO without pH adjustment

Farhat, Ali, Ahmad, Farrukh, Hilal, Nidal and Arafat, Hassan A. (2013) Boron removal in new generation reverse osmosis (RO) membranes using two-pass RO without pH adjustment. Desalination, 310 S1: 50-59. doi:10.1016/j.desal.2012.10.003


Author Farhat, Ali
Ahmad, Farrukh
Hilal, Nidal
Arafat, Hassan A.
Title Boron removal in new generation reverse osmosis (RO) membranes using two-pass RO without pH adjustment
Journal name Desalination   Check publisher's open access policy
ISSN 0011-9164
1873-4464
Publication date 2013-02-01
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.desal.2012.10.003
Volume 310
Issue S1
Start page 50
End page 59
Total pages 10
Place of publication Amsterdam , The Netherlands
Publisher Elsevier
Collection year 2014
Language eng
Abstract Boron removal using new generation RO membranes from several leading manufacturers under a secondpass configuration and without pH adjustment was studied. The study was conducted using seawater from the Arabian Gulf (higher salinity and temperatures than average seawater). Membranes from several manufacturers were tested under similar operational conditions and the same feed water source. It was found that significant boron rejections, as high as 96%, were successfully achieved, using readily-available commercial RO membranes under a two-pass configuration and without any pH adjustment. Moreover, single-pass configurations exhibited high salt and boron rejection results reaching 99% and 91%, respectively. First pass permeates had boron levels below 1.4 ppm, which are adequate to comply with the new WHO guidelines (2.4 ppm) and those of other countries such as Australia, Canada, and UAE, whose boron guideline thresholds are above 1.4 ppm. The paper also assesses the influence of several operational parameters such as feed water salinity, flow velocity, temperature and feed pressure in second pass on boron removal in this process. It was found that higher boron removals were obtained with higher feed velocity, higher secondpass pressures, and lower feed temperatures.
Keyword Boron rejection
Reverse osmosis
Desalination
Membranes
Two-pass systems
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Non HERDC
 
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Created: Tue, 16 Apr 2013, 20:53:16 EST by Ali Farhat on behalf of School of Chemical Engineering