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首页> 外文期刊>RSC Advances >Fast removal of methylene blue from aqueous solution using coal-based activated carbon
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Fast removal of methylene blue from aqueous solution using coal-based activated carbon

机译：使用煤基活性炭从水溶液中快速除去亚甲基蓝

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摘要

Coal-based activated carbons (CACs) were prepared from three long flame coals with different ash and volatile matter content. CACs prepared by coal with high ash (6.74%) and volatile matter content (34.31%) showed better adsorption efficiency towards MB (547.35 mg g(-1)) due to higher surface area and pore volume. The effect of coal to activating agent ratio (CAR) was also investigated in a batch reactor. The porosity development is closely related to the CAR. The calculated monolayer adsorption amount (714.29 mg g(-1)) was found on YLC-AC-3 with a surface area of 1212.50 m(2) g(-1). The equilibrium data were favorably described by the Langmuir and Freundlich isotherm models, and adsorption kinetics fitted well to the pseudo-second order model. The removal efficiency remains at 98.21% after five runs. The results of the present study suggest that CACs are potential and effective adsorbents in fast removal of dyes from aqueous solution.
机译：煤基活性碳（CAC）由三个长火焰煤制备，具有不同的灰分和挥发物质含量。 由于高灰分（6.74％）和挥发物质含量（34.31％）的煤制备的CAC表现出由于较高的表面积和孔体积而朝MB（547.35mg（-1））更好的吸附效率。 还在批量反应器中研究了煤对激活剂比（轿厢）的影响。 孔隙度发展与汽车密切相关。 在YLC-AC-3上发现计算的单层吸附量（714.29mg（-1）），表面积为1212.50m（2）g（-1）。 Langmuir和Freundlich等温模型有利地描述了均衡数据，并且吸附动力学适用于伪二阶模型。 五次运行后，去除效率仍保持在98.21％。 本研究结果表明，CAC是从水溶液快速除去染料时的潜在和有效的吸附剂。

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  • 来源
    《RSC Advances》 |2018年第47期|共9页
  • 作者

    Niu Taoxia; Zhou Jiawei; Zhang Chao; Li Shuang;

  • 作者单位

    Northwest Univ Sch Chem Engn Xian 710069 Shaanxi Peoples R China;

    Northwest Univ Sch Chem Engn Xian 710069 Shaanxi Peoples R China;

    Northwest Univ Sch Chem Engn Xian 710069 Shaanxi Peoples R China;

    Northwest Univ Sch Chem Engn Xian 710069 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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