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Elsevier, Desalination, 1-3(223), p. 49-56

DOI: 10.1016/j.desal.2007.01.199

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Removal of boron from SWRO permeate by boron selective ion exchange resins containing N-methyl glucamine groups

Journal article published in 2008 by N. Kabay, S. Sarp ORCID, M. Yuksel, M. Kitis, H. Koseoğlu, Ö. Arar, M. Bryjak, R. Semiat
This paper is available in a repository.
This paper is available in a repository.

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Data provided by SHERPA/RoMEO

Abstract

The objective of this study is to explore the performance of the boron selective ion exchange resins for boron removal from seawater reverse osmosis (SWRO) permeate. A lab-scale cross-flow flat-sheet configuration test unit (SEPA CF II, Osmonics) and FilmTec RO membranes were used for batch-mode RO tests. Seawater samples containing 5.1 mg B/L were collected from the Mediterranean Sea. The chelating ion exchange resins containing N-methyl glucamine groups (Diaion CRB 02 and Dowex-XUS 43594.00 resins) were employed for batch and column-mode tests to remove boron from SWRO permeate. Optimum resin amount for boron removal from SWRO permeate was found as 1 g resin/L for both Diaion and Dowex resins. The equilibrium half-time for B removal was between 30 and 45 min for Dowex and 20–30 min for Diaion resins. Sorption kinetics for these resins fit to Ho pseudo-second-order kinetics model. Both resins exhibited large breakthrough capacities with boron leakage of less than 0.2 mg B/L. Breakthrough capacity was influenced by space velocity. Boron loaded onto the resins was quantitatively eluted with 5% H2SO4 solution.