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Magnetic Fe3O4/sepiolite composite synthesized by chemical co-precipitation method for efficient removal of Eu(III)

机译:化学共沉淀法合成Fe3O4 /海泡石磁性复合材料有效去除Eu(III)

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摘要

In this study, a novel magnetic Fe3O4/sepiolite composite (MFSC) was synthesized via chemical co-precipitation method. The synthesized MFSC was characterized by the several kinds of methods. The characterization results showed that MFSC was composed of Fe3O4 nanoparticles on the surface of sepiolite. Moreover, MFSC was used as an adsorbent for the removal of Eu(III) from aqueous solutions. The influences of contact time, pH, ionic strength, and temperature were investigated. The synthesized MFSC had a Langmuir adsorption capacity of 30.85 mg/g at 293 +/- 1K, which was much higher than that of some common and low-cost adsorbents. Ion exchange and surface complexation were the main adsorption mechanisms of Eu(III) adsorption on MFSC. The novel MFSC adsorbent is efficient and economical for Eu(III) removal for its good adsorption characteristic, excellent regeneration property, and high magnetic separation efficiency.
机译:本研究通过化学共沉淀法合成了新型磁性Fe3O4 /海泡石复合材料(MFSC)。通过多种方法对合成的MFSC进行了表征。表征结果表明,MFSC由海泡石表面的Fe3O4纳米颗粒组成。此外,MFSC被用作吸附剂,用于从水溶液中去除Eu(III)。研究了接触时间,pH,离子强度和温度的影响。合成的MFSC在293 +/- 1K时的Langmuir吸附容量为30.85 mg / g,远高于某些常见的低成本吸附剂。离子交换和表面络合是Eu(III)在MFSC上的主要吸附机理。新型MFSC吸附剂具有良好的吸附特性,优异的再生性能和较高的磁选效率,因此可高效经济地去除Eu(III)。

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  • 来源
    《Desalination and water treatment》 |2016年第36期|16943-16954|共12页
  • 作者单位

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Magnetic Fe3O4/sepiolite composite; Co-precipitation; Eu(III); Adsorption;

    机译:磁性Fe3O4 /海泡石复合材料;共沉淀;Eu(III);吸附;
  • 入库时间 2022-08-18 02:01:06

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