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首页> 外文会议>International Forum on Materials Science and Industrial Technology >High Cr(VI) adsorption performance of coal-based activated carbon in aqueous solution
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High Cr(VI) adsorption performance of coal-based activated carbon in aqueous solution

机译：煤基活性炭在水溶液中的高Cr（VI）吸附性能

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The activated carbon with high surface area was prepared by KOH activation from anthracite and used as adsorbent for removal of Cr(VI) from aqueous solution. The pore structure and surface properties were characterized by N_2 adsorption at 77K, transmission electron microscope (TEM) and Fourier transform infrared spectroscopy ( FTIR). Effect of pH and isotherms at different temperature were investigated. Results show that the prepared carbon is a microporous- and mesoporous-adsorbent with developed pore structure and abundant surface oxygen-containing groups. PH value of the solution plays key function on the adsorption. The chemical adsorption dominates the adsorption process. The activated carbon exhibits much higher Cr adsorption capacity than the commercial activated carbon at initial pH of ~3. The equilibrium adsorption data are fitted by both Freundlich model and Langmuir model well.
机译：具有高表面积的活性炭通过从无烟煤的KOH活化制备并用作吸附剂，用于从水溶液中除去Cr（VI）。通过77K，透射电子显微镜（TEM）和傅里叶变换红外光谱（FTIR）的N_2吸附的孔结构和表面性质的特征在于。研究了pH和等温线在不同温度下的影响。结果表明，制备的碳是一种微孔和中孔吸附剂，具有发育的孔结构和丰富的表面含氧基团。解决方案的pH值在吸附上播放关键功能。化学吸附主要是吸附过程。活性炭表现出比初始pH的商业活性炭更高的CR吸附能力。平衡吸附数据由Freundlich模型和Langmuir模型井配合。

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