Chia Nan University of Pharmacy & Science Institutional Repository:Item 310902800/2389
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    Title: 以含奈米零價鐵之混合薄膜反應牆進行地下水中污染物之還原處理(1/3)
    Reduction treatment of polluted groundwater using reactive hybrid-membrane barrier containing nanoscale zero-valent iron (1/3)
    Authors: 余光昌
    陳世雄
    Contributors: 環境工程與科學系
    Keywords: 奈米級零價鐵
    薄膜反應牆
    硝酸鹽
    遲滯時間
    Nanoscale zero-valent-iron
    reactive barrier membranes
    nitrate
    lag time
    Date: 2005
    Issue Date: 2008-07-31 14:37:44 (UTC+8)
    Publisher: 台南縣:嘉南藥理科技大學環境工程與科學系
    Abstract: 本研究乃欲結合自製的奈米級零價鐵和
    PVA 薄膜,製成具活性之有機-無機混合薄膜反
    應牆,針對硝酸鹽(NO3
    -)進行還原處理研究。結
    果顯示,本研究自行合成的奈米零價鐵其比表
    面積經過測定後為74.68±1.73m2/g,並藉由場放
    射電子顯微鏡(FE-SEM)進行觀察,由所得影像
    (如圖1 所示)可以明顯看出,鐵粒子均呈現球型
    且緊密排列,經量測後其粒徑均小於100nm。
    而以X 光繞射儀(XRD)了解其成份結構時,發
    現其波峰位址對照圖譜資料庫時確認為鐵成
    份。此外,穿透試驗發現下列結果: (1)硝酸鹽
    起始濃度愈高,穿透之遲滯時間(lag time)愈
    短;(2) PVA 薄膜厚度愈小,穿透之遲滯時間愈
    短;(3) PVA 薄膜中奈米級零價金鐵含量愈大,
    穿透之遲滯時間愈長。
    The purpose of this study is to collaborate
    nanoscale Fe(0) with membranes to form reactive
    barrier membrane for the reduction or
    dechlorination remediation of nitrates from
    groundwater under controlling of initial
    concentrations of pollutants, PVA membrane
    thickness and the content of nanoscale Fe(0) in
    membranes. Result reveals that the specific area of
    the synthesized Fe(0) is 74.68±1.73m2/g.The
    diameter of the synthesized Fe(0) particles could
    be found smaller than 100 nm by the scanning of
    FE-SEM. Then, the Fe(0) was confirmed by the
    analysis of XRD. By the breakthrough tests, the
    following could be found: (1)the higher the initial
    nitrate concentration, the shorter the lag time; (2)
    the thicker the PVA membrane thickness, the
    shorter the lag time; (3)the more the content of
    nanoscale Fe(0) in PVA membrane, the longer the
    lag time.
    Appears in Collections:[Dept. of Environmental Engineering and Science (including master's program)] MOST Project

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