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    题名: The study of plasma-treated organic materials as adsorbents for heavy metal removal
    作者: M. H. Leu (呂明和)
    Y. K. Chang
    F. H. Chi
    M. S. Ko
    C. C. Chen
    J. E. Chang
    关键词: metal removal
    organic waste
    plasmas
    日期: 2007
    上传时间: 2009-11-20 10:52:33 (UTC+8)
    摘要: Wastewater generated from industries such as mining, electroplating, surface finishing, etc,
    contains heavy metals, which are environmental hazards. Adsorbents produced from waste
    peanut shell, rice husk, wood sawdust, rubber(tire) and fibre were applied to adsorb heavy metal
    ions in wastewater. The main advantages of using these organic waste as adsorbents are the high
    adsorption efficiency and low cost as well as the reuse of organic waste. In addition, non-thermal
    plasmas were used to modify the surface of organic wastes. In this investigation, it was possible
    that surface function groups modification could improve higher adsorption efficiency of heavy
    metals. The samples were processed at different microwave powers and treatment time. The
    experimental results showed that organic waste materials as adsorbents might have total metals
    removal were over 70~84%. The plasma-treated adsorbents might upgrade metals removal more
    over 10~20%. In a word, from the point of recycle and reuse, it is definitely worth using the
    organic wastes as adsorbents to remove heavy metal ions from solution.
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