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<p>Systematic exploration of boric acid separation characteristics during electrodialysis treatment of boron-containing radioactive wastewater was conducted, and a boron-salt-water multi-component migration model was established. Based on a laboratory-scale electrodialysis setup, effects of pH, boron concentration, and current on boron separation coefficients were examined. Experimental data demonstrated significant correlations between boron separation coefficients and system pH: under slightly acidic conditions (pH = 6), separation coefficients exceeded 0.914. However, separation coefficients declined significantly with increasing system alkalinity. Model analysis revealed pH-dependent boron migration mechanisms: in slightly acidic systems, boron loss was jointly dominated by concentration diffusion and electroosmosis, while under alkaline conditions, electroosmotic migration contributed over 90% to boron loss, emerging as the primary controlling factor.</p>

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Study on the separation characteristics of boric acid during electrodialysis treatment of simulated boron-containing radioactive wastewater

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • Biao Wang,
  • Xiaowei Wang,
  • Jinfeng Men,
  • Yudong Xie,
  • Ping Bao

摘要

Systematic exploration of boric acid separation characteristics during electrodialysis treatment of boron-containing radioactive wastewater was conducted, and a boron-salt-water multi-component migration model was established. Based on a laboratory-scale electrodialysis setup, effects of pH, boron concentration, and current on boron separation coefficients were examined. Experimental data demonstrated significant correlations between boron separation coefficients and system pH: under slightly acidic conditions (pH = 6), separation coefficients exceeded 0.914. However, separation coefficients declined significantly with increasing system alkalinity. Model analysis revealed pH-dependent boron migration mechanisms: in slightly acidic systems, boron loss was jointly dominated by concentration diffusion and electroosmosis, while under alkaline conditions, electroosmotic migration contributed over 90% to boron loss, emerging as the primary controlling factor.