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.
