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The influence of modification of activated carbon on adsorption of Ni(Ⅱ) and Cd(Ⅱ)

机译：活性炭改性对Ni（Ⅱ）和Cd（Ⅱ）吸附的影响

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摘要

Adsorption of Cd(Ⅱ) and Ni(Ⅱ) ions on the modified activated carbon (WG-12) was measured. Two methods of activated carbon modification, i.e. a traditional method in a rotary furnace and a method developed by the author in a reactor that uses Joule's heat, were analysed. The effects of performed modification were evaluated based on the surface area, water vapour adsorption, volume of micro-, meso- and macropores, and a number of oxygen groupings measured with the Boehm method. The application of these two methods resulted in the increase in adsorption of Ni~(2+) and Cd~(2+). The most favourable results for adsorption of both Ni~(2+) and Cd~(2+) were obtained for activated carbons modified in a rotary furnace at 800 ℃ and with atmospheric oxygen at 400 ℃. Adsorption of Ni~(2+) and Cd~(2+) on activated carbons modified with Joule's heat was slightly higher than in the case of activated carbons modified in a rotary furnace with carbon dioxide and water vapour at the same temperature (400 ℃). The presented method developed by the author is far more energy efficient. Less mass reduction and changes in a porous structure are observed which is favourable during adsorption of organic compounds.
机译：测定了改性活性炭（WG-12）对Cd（Ⅱ）和Ni（Ⅱ）离子的吸附。分析了两种活性炭改性方法，即旋转炉中的传统方法和作者在使用焦耳热的反应器中开发的方法。根据表面积，水蒸气吸附，微孔，中孔和大孔的体积以及用Boehm方法测得的许多氧基团，评估改性的效果。两种方法的应用导致Ni〜（2+）和Cd〜（2+）的吸附增加。 Ni-（2+）和Cd〜（2+）的吸附对于在800℃的旋转炉中和400℃的氧气中改性的活性炭均获得了最有利的吸附结果。焦耳热改性的活性炭对Ni〜（2+）和Cd〜（2+）的吸附率略高于在相同温度（400℃）下用二氧化碳和水蒸气在旋转炉中改性的活性炭吸附的情况。 ）。作者开发的方法具有更高的能源效率。观察到较少的质量减少和多孔结构的变化，这在有机化合物的吸附过程中是有利的。

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  • 来源
    《Desalination and water treatment》 |2014年第21期|3979-3986|共8页
  • 作者

    Joanna Lach; Ewa Okoniewska; Longina Stepniak; Agnieszka Ociepa-Kubicka;

  • 作者单位

    Institute of Environmental Engineering, Czestochowa University of Technology, Ul. Brzeznicka 60a, Czestochowa 42-200, Poland;

    Institute of Environmental Engineering, Czestochowa University of Technology, Ul. Brzeznicka 60a, Czestochowa 42-200, Poland;

    Institute of Environmental Engineering, Czestochowa University of Technology, Ul. Brzeznicka 60a, Czestochowa 42-200, Poland;

    Institute of Environmental Engineering, Czestochowa University of Technology, Ul. Brzeznicka 60a, Czestochowa 42-200, Poland;

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  • 正文语种 eng
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  • 关键词

    Activated carbon; Modification; Cadmium; Nickel;

    机译：活性炭;修改;镉;镍;

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