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

Ali Farhat, Farrukh Ahmad, Nidal Hilal, Hassan A. Arafat

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Boron removal using new generation RO membranes from several leading manufacturers under a second-pass 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 second-pass pressures, and lower feed temperatures.

Original languageEnglish
Pages (from-to)50-59
Number of pages10
JournalDesalination
Volume310
DOIs
Publication statusPublished - 1 Feb 2013
Externally publishedYes

Fingerprint

Osmosis membranes
Boron
Reverse osmosis
boron
membrane
Seawater
seawater
Water
temperature
removal
reverse osmosis
Flow velocity
Temperature
flow velocity
Salts
salt
Membranes
salinity

Keywords

  • Boron rejection
  • Desalination
  • Membranes
  • Reverse osmosis
  • Two-pass systems

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Boron removal in new generation reverse osmosis (RO) membranes using two-pass RO without pH adjustment. / Farhat, Ali; Ahmad, Farrukh; Hilal, Nidal; Arafat, Hassan A.

In: Desalination, Vol. 310, 01.02.2013, p. 50-59.

Research output: Contribution to journalArticle

Farhat, Ali ; Ahmad, Farrukh ; Hilal, Nidal ; Arafat, Hassan A. / Boron removal in new generation reverse osmosis (RO) membranes using two-pass RO without pH adjustment. In: Desalination. 2013 ; Vol. 310. pp. 50-59.
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