WaterSolutions Separation of Boron from Liquid Media

Potable Water: Borate is a very "weakly held" anion so non-selective methods must remove all other anions before they will remove the borate. The more economical option is to selectively remove borate with AMBERLITE™ PWA10 resin. In addition, boron selective resin is playing an ever increasing role in seawater desalination processes.⁽¹⁾ AMBERLITE PWA10 resin meets NSF/ANSI Standard 61 for contact with drinking water. For more information see our regulatory information.

Waste Water: When borate is present as an acid, it can be removed from solutions with a weak base anion exchange resin, an acid absorber. Borate salts are more typically present, requiring a strong base resin like DOWEX 21K XLT resin for control. Here the resin will remove all of the anions along with other common anions like chloride or sulfate. For streams that have a high organic content and are prone to surface fouling, DOWEX MARATHON 11 Resin or AMBERLITE™ IRA458 resin is recommended.

Chemical Processing: For treatment of magnesium brines containing boron and other chemical processing applications, AMBERLITE IRA743 can be used. For more on the use of ion exchange resins in chemical processing see the chemical processing application page.

References

(1) Marston, Busch, Prabhakaran: Boron Selective Resin for Seawater Desalination, May 24, 2005, European Desalination Society Conference, LaSpazia, Italy.
(2) Goltz, H. Robert, Eicher, Chris & Levy, Naomi: A Zero Liquid Discharge Process for Boron Recovery from FGD Wastewater, International Water Conference 2009 (IWC-09-49).
(3) Goltz, H. Robert, Eicher, Chris &Pudvay, Michael: Start-up and Operation of a Zero Liquid Discharge Process for Boron Recovery from FGD Wastewater, International Water Conference 2012 (IWC-12-42).