以幾丁聚醣披覆鐵錳氧化磁體去除水中二價銅及硼酸根離子

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Title:	以幾丁聚醣披覆鐵錳氧化磁體去除水中二價銅及硼酸根離子 Using Chitosan-Coated Iron-Manganese Oxide Magnet to Remove Divalent Copper and Borate Ion from Water 工業污染所造成的毒性?積以及對於環境的衝擊，近年來引起大家廣泛的關注，誘發諸多相關研究，其目的是希望能從廢水中開發有效去除有害物質的技術。半導體產業在製程中會使用硼、銅的化合物作為原料進而產生含有高濃度的硼、銅廢水。本研究利用淨水污泥經高溫?燒製備鐵錳氧化磁體，並以幾丁聚醣進行表面改質去除水中二價銅及硼酸根離子；從實驗結果發現，100ppm二價銅溶液飽和吸附量25mg/g，500ppm二價銅溶液飽和吸附量皆達到25~70mg/g，此吸附結果主要為表面官能基與二價銅作用所致；而本研究所使用之吸附劑對於硼酸根離子幾無吸附效果，從短時間的吸附結果可以得知，不論是透過轉速、濃度、pH、藥品配製用水更換等等參數變化，皆幾無吸附量，其因吸附劑表面官能基無法與其形成鍵結所致。 In recent years, it has aroused human concern about the toxicity accumulation and environmental impact caused by industrial pollution. Therefore, many related studies are expected to develop technical methods that can effectively remove harmful substances in wastewater. The materials for the semiconductor industry used boron and copper compounds, the waste water produced contains high concentrations of boron and copper substances. In this study, the iron manganese oxide magnet is prepared by high temperature calcination of water purification sludge and use chitosan-coated on iron manganese oxide surface to remove copper and borate ions. The results shows the saturated adsorption capacity of 100 ppm divalent copper solution is 25 mg/g, 500 ppm is for 25~70 mg/g. The adsorption mechanism is mainly caused by the interaction of surface functional groups with divalent copper. From the short-time adsorption results, the chitosan-coated iron-manganese oxide magnet has no adsorption effect on borate ions, no matter what about of the changes in parameters such as rotation speed, concentration, pH and reagent water preparation. It is speculated that the functional groups on the surface of the adsorbent can’t bonding with borate ions.
Authors:	許宸運
Contributors:	環境工程與科學系謝國鎔甘其銓
Keywords:	鐵錳氧化磁體幾丁聚醣吸附二價銅硼酸根離子 iron-manganese oxide magnet chitosan adsorption divalent copper borate ion
Date:	2020
Issue Date:	2022-10-21 10:34:15 (UTC+8)
Relation:	學年度：108， 84頁
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Dissertations and Theses

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