腐植酸與金屬離子對微米級零價鐵還原處理硝酸鹽之影響

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Title:	腐植酸與金屬離子對微米級零價鐵還原處理硝酸鹽之影響
Authors:	何先聰
Contributors:	職業安全衛生系
Keywords:	微米級零價鐵金屬離子硝酸鹽腐植酸 microscale zero-valent iron metal ion nitrate humic acid
Date:	2006
Issue Date:	2008-06-03 10:06:31 (UTC+8)
Publisher:	台南縣：嘉南藥理科技大學職業安全衛生系
Abstract:	本研究是探討不同金屬離子Fe2+與Cu2+、腐植酸與起始pH 值對微米級零價鐵(Fe0)還原處理水中硝酸鹽氮的影響。實驗結果發現在未控制pH 下，分別添加 1.0 mM Fe2+和Cu2+時，還原處理硝酸鹽氮效果明顯高於未添加金屬離子。而控制 pH 下，有無添加Fe2+並沒有顯著的影響，而添加Cu2+則有較顯著的影響。添加腐植酸於溶液中雖會增加微米級零價鐵的還原能力，但是其效果並不顯著。從本研究探討的控制因素中發現，影響微米級零價鐵對硝酸鹽去除效果之主要因素為起始pH 值的控制。 The aim of this study is to explore the effects of both humic acid and different metal ions (Fe2+ and Cu2+) on the reduction of nitrate under different initial pH. Results indicate that the removal of nitrate could be enhanced by dosing Fe2+ or Cu2+ under uncontrolling initial pH. However, the dosing of Cu2+ could be more helpful than the dosing of Fe2+ in removal of nitrate. The dosing of humic acid have no significant efficiency on the removal of nitrate. The main controlled facter for the removal of nitrate with microscale zero-valent iron was initial pH of solution.
Relation:	計畫編號 : CNOS9502
Appears in Collections:	[Dept. of Occupational Safety] Chna Project

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