Utilization of bipolar membrane electrodialysis for the removal of boron from aqueous solution

Hiroki Nagasawa, Atsushi Iizuka, Akihiro Yamasaki, Yukio Yanagisawa

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    Bipolar membrane electrodialysis (BMED) was used to remove boron from aqueous solution. BMED was compared with conventional electrodialysis (ED) using aqueous solutions of sodium tetraborate containing 100 mg/L of boron. With use of BMED, more than 90% of the boron was removed under both acidic (pH 2.3) and basic (pH 9.1) conditions, whereas only 35-45% of the boron was removed using conventional ED. Over 90% of the boron was removed from the diluate solution over a wide range of initial pH from 2.3 to 12.0. A high initial pH reduces the current efficiency of boron removal because of the high mobility and high concentration of hydroxide ions compared with those of borate ions. The power requirement for boron removal increased as the initial pH and concentration of sodium chloride increased, but decreased as the applied voltage was increased. BMED is a promising option for removal of boron from aqueous solution.

    Original languageEnglish
    Pages (from-to)6325-6330
    Number of pages6
    JournalIndustrial and Engineering Chemistry Research
    Volume50
    Issue number10
    DOIs
    Publication statusPublished - 2011 May 18

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)
    • Industrial and Manufacturing Engineering

    Fingerprint Dive into the research topics of 'Utilization of bipolar membrane electrodialysis for the removal of boron from aqueous solution'. Together they form a unique fingerprint.

    Cite this