二價金屬離子對奈米級零價鐵還原處理硝酸鹽之影響

CNU IR > Chna Nan Annual Bulletin > No.31 2005 > Item 310902800/21167

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Title:	二價金屬離子對奈米級零價鐵還原處理硝酸鹽之影響 Effects of Divalent Metal Ions on the Removal of Nitrate by Nanoscale Zero-Valent iron
Authors:	陳裕太潘文捷陳冠宇賴慧如李美貴余光昌
Contributors:	環境工程與科學系職業安全衛生系
Keywords:	奈米級零價鐵二價金屬離子硝酸鹽 Nanoscale Zero-valent iron Divalent metal ion Nitrate
Date:	2005
Issue Date:	2009-04-27 11:53:51 (UTC+8)
Abstract:	本研究的目的在於利用自行合成之奈米級零價鐵還原去除水中之硝酸鹽，並在不同起始pH值下，探討溶液中含有Fe2+與Cu2+時對於零價鐵還原去除硝酸鹽之影響。控制起始pH值，並添加Fe2+與Cu2+於零價鐵去除硝酸鹽的溶液中時，發現在起始pH值為2的情況下，添加1.0mM的Cu2+時，硝酸鹽有最佳的去除效果。Cu2+顯著增加硝酸鹽之還原去除效果，可能是由於Cu2+在鐵金屬表面被還原Cu0或Cu+，進而成為催化劑促進零價鐵還原能力。而於溶液中添加Fe2+也能提高零價鐵去除硝酸鹽的效果，但是，效果較添加Cu2+差。 The aim of this study was to explore the effect of different metal ions (such as Fe2+ and Cu2+) on the reduction of nitrate by nanoscale zero valent iron under various initial solution pH. Under the condition of initial solution pH=2, additional dosing of 1.0 mM Cu2+ could enhance the removal of nitrate more than Fe2+ did, which might be due to the generation of Cu+ or Cu0 reduced from Cu2+ on the surface of iron by Fe0. Cu+ or Cu0 could increase the reduction potential of Fe0.
Relation:	嘉南學報(科技類)31期：p.175-185
Appears in Collections:	[Chna Nan Annual Bulletin] No.31 2005 [Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles [Dept. of Occupational Safety] Periodical Articles

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