銅/鐵型碳觸媒氧化降解含雙酚A廢水之研究

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Title:	銅/鐵型碳觸媒氧化降解含雙酚A廢水之研究 Catalytic peroxide oxidation of bisphenol A by copper/iron embedded activated carbon catalyst
Authors:	楊士朋
Contributors:	環境工程與科學系陳世雄
Keywords:	雙酚A 碳觸媒類芬頓氧化 bisphenol A activated carbon catalyst Fenton like oxidation
Date:	2012
Issue Date:	2013-03-15 16:03:06 (UTC+8)
Abstract:	本研究利用濕式含浸法將硫酸亞鐵、硫酸銅等活化劑含浸於椰殼纖維中，將其燒結成銅、鐵型碳觸媒，並將銅、鐵型碳觸媒應用於濕式催化氧化系統氧化降解含雙酚A之廢水。研究中以比表面積分析儀(BET)分析碳觸媒之孔隙特性與氧化活性之關聯性；以環境掃描式電子顯微鏡 (E-SEM)觀察碳觸媒表面特性及金屬氧化物之分布狀況;以能量分散光譜儀(EDS)分析碳觸媒表面元素組成，雙酚A廢水經氧化降解後，以高效能液相層析儀及化學需氧量定量氧化降解過後雙酚A廢水之轉化率及COD去除率。本研究結果顯示，以銅型、鐵型單金屬或銅/鐵雙金屬碳觸媒應用於氧化系統中均展現顯著催化活性，利用於處理雙酚A廢水皆具有良好之降解效果，其中以銅型碳觸媒對於氧化雙酚A之效果較鐵型碳觸媒佳。催化氧化反應顯著受反應溫度之影響，較低反應溫度時，各金屬碳觸媒之雙酚A轉化率及COD去除率普遍較低，在偏酸性之條件下有助於催化反應之氧化效果，但pH值過低時，碳觸媒因pH過低導致金屬溶出，此時將使氧化效果降低。本研究所製碳觸媒與過氧化氫應用於催化氧化雙酚A可獲100%轉化率及80%COD去除率，由自由基螢光反應推測本研究之碳觸媒氧化反應是以自由基氧化降解雙酚A之類芬頓反應機制。 The wet immersing method was used to prepare iron/copper embedded activated carbon catalyst with impregnating coconut shell in the iron sulfate and copper nitrite solution, the impregnated coconut shell were activated at optimum condition to achieve the prospective structure. The Fe-AC and Cu-AC were applied in catalytic wet hydroxide oxidation system to remove bisphenol A (BPA) from wastewater. In this investigation, the pore properties and sorption capacity of pollutant were characterized by BET analysis, the morphology and active metal deposition with analyzing by SEM-EDS. The conversions of BPA and COD removals in oxidation were determined by the liquid chromatographic and COD titration method. It was found that all activated carbon catalysts own a high activity in catalytic oxidation to degrade BPA in wastewater. The activity of Cu-AC showed a superior activity than Fe-AC and Fe/Cu-AC catalyst in oxidation. In this study, the reaction temperature significant affects the activity in oxidation and also dominated the BPA conversion and COD removal. Acidity is another significant factor to dominate the pollutant conversion and COD removal in this investigation. Under the lower pH, the leaching of activated metal from carbon declined the oxidation activity and decreased the BPA conversion and COD removal. Under the optimum condition, a completely conversion and over 80% COD removal were obtained in the oxidation with iron/copper embedded activated carbon. The free radical determination by fluorescence technology proposed that a Fenton like mechanism was existed in this catalyst oxidation system.
Relation:	校內校外均不公開，學年度：100，149頁
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Dissertations and Theses

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