銅及鎘離子對亞鐵離子催化過氧氫分解氯酚類污染物之效應

CNU IR > Chna Nan Annual Bulletin > Vol.24 (1998) > Item 310902800/22744

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Title:	銅及鎘離子對亞鐵離子催化過氧氫分解氯酚類污染物之效應 Effect Of Cu2+ and Cd2+ On the Fe2+ Catalyzed Mineralization of Chlorophenols by Hydrogen Peroxide
Authors:	盧明俊廖志祥揚英賢董淑麗蔡宜宏
Contributors:	環境工程衛生系
Keywords:	過氧化氫亞鐵離子氯酚類化合物銅離子鎘離子 hydrogen peroxide ferrous ion cadmium ion copper ion, chlorophenols
Date:	1998
Issue Date:	2010-05-11 11:47:13 (UTC+8)
Abstract:	由於近年國內之工業快速發展，廢水量也相對的增加，因此對於工業廢水之處理以及放流水標準愈來愈嚴格的今天，廢水處理效率應更加重視。Fenton法具有強氧化力，能將一些難分解之有機物去除，是一具發展潛力之處理技術，然而工業廢水中經常是重金屬與有機物質共存，在過去的研究裡卻極少探討重金屬離子對Fenton反應之影響，因此本研究便以酚、2-氯酚及2,4-二氯酚為對象，用批式反應槽，以總有機碳(TOC)做為評估指標來探討Cu2+及Cd2+對Fenton反應之效應。研究結果顯示，依有機物種類及重金屬種類及濃度而定，H2O2的濃度對酚、2-氯酚及2,4-二氯酚之礦化反應，可能因H2O2的濃度增加反而造成反應速率變慢，也可能因H2O2的濃度增加而造成反應速率變快。在本研究的實驗條件下，亞鐵離子濃度之改變對Fenton反應速率並無明顯的改變。重金屬影響酚、2-氯酚及2,4-二氯酚礦化程度上各有不同，但其中含銅離子之礦化速率較含鎘離子者之礦化速率為佳。 The Fenton reaction has been applied to the minerallzation of chlorophenols in aqueous solutions containing various metal lons, namely Cu2+ and Cd2+. Total organic carbon (TOC) was used to evaluauate the mlneralization efflclencies of chlorophenols. Results show that Cuz and Cd2+ can decrease or increase the eftcleneies of chlorophenol mineralization depending on the specles of lons and organic chemicals. Generally, the mineralizatlon efficlencies of phenol and 2,4-dlchlorophenol increase with Increasing the concentration of hydrogen peroxide. However, increaslzlslng the concentratiorloo of hydrOgen peroxide in oxidizing 2-chlorophenol resulted in slowing down the mhineralizatlon reaction. In this research, we didl Jlot flnd that [Fe2] has a signlficant effect on the mlneralization of chlorophenols. Generally, the minerallzation etficiency of chlorophenols in the presence of Cuz+ is higher than that in the presence of Cd2+.
Relation:	嘉南學報 24期 : p.28-37
Appears in Collections:	[Chna Nan Annual Bulletin] Vol.24 (1998) [Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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