Scholarlink

<p>This study used a static method to investigate the sorption behavior of Eu(III) on ZrP<sub>2</sub>O<sub>7</sub>, focusing on the effects of pH, various anions (NO<sub>3</sub><sup>−</sup>, SO<sub>4</sub><sup>2</sup>⁻, H<sub>2</sub>PO<sub>4</sub>⁻, citrate) and cations (K⁺, Ca<sup>2</sup>⁺, Mg<sup>2</sup>⁺) on Eu<sup>3</sup>⁺ sorption. Sorption isotherms of Eu(III) on ZrP<sub>2</sub>O<sub>7</sub> were obtained at three different temperatures. The results indicate that Eu(III) sorption is significantly influenced by pH and the solid–liquid ratio (m/V); the sorption percentage increases with increasing pH and m/V. The presence of phosphate in the solution enhances Eu(III) sorption, while sulfate reduces it. The sorption percentage of sulfate and phosphate on ZrP<sub>2</sub>O<sub>7</sub> are found to be low. Citrate exhibites a high adsorption percentage of 95% at pH2, and decreases as pH increases, dropping to 2.5% at pH7. The higher the citrate concentration, the greater its effect on Eu(III) adsorption. In KNO<sub>3</sub>, Ca(NO<sub>3</sub>)<sub>2</sub>, and Mg(NO<sub>3</sub>)<sub>2</sub> solution, the change in Eu(III) sorption percentage is minimal. Additionally, increased temperature favors Eu(III) sorption, and the Langmuir model effectively describes Eu(III) sorption on ZrP<sub>2</sub>O<sub>7</sub>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of pH, foreign ions and temperature on the sorption of Eu(III) on ZrP2O7

  • 期刊论文

  • 发表日期：

    2025年4月30日

查看全文
  • Lei Yang,
  • Kun Huang,
  • Guoshu Mao,
  • Xiaoyi Sun,
  • Youqian Ding,
  • Shengdong Zhang,
  • Lijuan Qian

摘要

This study used a static method to investigate the sorption behavior of Eu(III) on ZrP2O7, focusing on the effects of pH, various anions (NO3−, SO42⁻, H2PO4⁻, citrate) and cations (K⁺, Ca2⁺, Mg2⁺) on Eu3⁺ sorption. Sorption isotherms of Eu(III) on ZrP2O7 were obtained at three different temperatures. The results indicate that Eu(III) sorption is significantly influenced by pH and the solid–liquid ratio (m/V); the sorption percentage increases with increasing pH and m/V. The presence of phosphate in the solution enhances Eu(III) sorption, while sulfate reduces it. The sorption percentage of sulfate and phosphate on ZrP2O7 are found to be low. Citrate exhibites a high adsorption percentage of 95% at pH2, and decreases as pH increases, dropping to 2.5% at pH7. The higher the citrate concentration, the greater its effect on Eu(III) adsorption. In KNO3, Ca(NO3)2, and Mg(NO3)2 solution, the change in Eu(III) sorption percentage is minimal. Additionally, increased temperature favors Eu(III) sorption, and the Langmuir model effectively describes Eu(III) sorption on ZrP2O7.