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首页> 外文期刊>Building and Environment >Using phosphoric acid-impregnated activated carbon to improve the efficiency of chemical filters for the removal of airborne molecular contaminants (AMCs) in the make-up air unit (MAU) of a cleanroom
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Using phosphoric acid-impregnated activated carbon to improve the efficiency of chemical filters for the removal of airborne molecular contaminants (AMCs) in the make-up air unit (MAU) of a cleanroom

机译：使用磷酸浸渍的活性炭来提高化学过滤器的效率，以去除洁净室的补充空气单元（MAU）中的空气传播的分子污染物（AMC）

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摘要

A coconut shell activated carbon precursor was modified by impregnation with phosphoric acid. The effects of the particle diameter of the impregnated activated carbons (IACs) on the thickness, pressure resistance, and face velocity of a chemical filter were investigated. Furthermore, volatile organic compounds (VOCs) adsorption experiments were carried out to determine the relationship between the removal efficiency and the chemical properties of the adsorbents. The effects of various parameters such as challenge gas concentration, saturated adsorption ratio, impregnation method and impregnant contents were investigated. The results showed that the effect of face velocity on pressure resistance is larger than that of the thickness, that 0.25 M phosphoric acid impregnation of activated carbon can raise VOC removal efficiency by 2-3% (toluene: from 95.8% to 98.1%, isopropanol: from 95.2 to 97.2%), and that the optimal impregnation time is around 1.5 h. A simple shaking impregnation method exhibited better performance than the ultrasonic method.
机译：通过用磷酸浸渍来改性椰子壳活性炭前体。研究了浸渍活性炭（IAC）的粒径对化学过滤器厚度，耐压性和表面速度的影响。此外，进行了挥发性有机化合物（VOC）吸附实验，以确定去除效率与吸附剂化学性质之间的关系。研究了挑战性气体浓度，饱和吸附率，浸渍方法和浸渍剂含量等各种参数的影响。结果表明，表面速度对耐压性的影响大于厚度的影响，活性炭加入0.25 M磷酸可将VOC去除效率提高2-3％（甲苯：从95.8％到98.1％，异丙醇：从95.2到97.2％），并且最佳浸渍时间约为1.5 h。一种简单的振动浸渍方法比超声方法具有更好的性能。

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  • 来源
    《Building and Environment》 |2010年第4期|929-935|共7页
  • 作者

    Y.-H. Kang; A. Shiue; S.-C. Hu; C.-Y. Huang; H.-T. Chen;

  • 作者单位

    Energy and Environment Research Laboratories, Industrial Technology Research Institute. Hinchu, Taiwan. ROC;

    Graduate Institute of Mechanical and Electrical Engineering, National Taipei University of Technology, 1, Sec. 3. Chung-Hsiao E. Road, Taipei 106, Taiwan, ROC;

    Department of Energy and Refrigerating Air-conditioning Engineering, National Taipei University of Technology, 1, Sec. 3. Chung-Hsiao E. Road, Taipei 106, Taiwan, ROC;

    Energy and Environment Research Laboratories, Industrial Technology Research Institute. Hinchu, Taiwan. ROC;

    Energy and Environment Research Laboratories, Industrial Technology Research Institute. Hinchu, Taiwan. ROC;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    impregnated activated carbons; phosphoric acid; chemical filter; volatile organic compounds; adsorption;

    机译：浸渍的活性炭;磷酸化学过滤器挥发性有机化合物;吸附;

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