臺灣博碩士論文加值系統

本研究先以懸浮聚合法製備交聯的聚縮水甘油甲基丙烯酸酯(cPGMA)後，再利用丙醇胺與cPGMA反應而得到簡稱為PAOH的螯合樹脂。由FT-IR與EDS的分析確定PAOH的製備是成功的，而SEM的觀察也得知PAOH是不規則型態、粒徑250～350 μm的多孔隙顆粒。當PAOH吸附單獨的Cu2+ 或Ni2+ 時，約7～8分鐘可達到1.60與0.92 mmol/(g PAOH)的最大吸附容量，而吸附Cd2+ 則需25～30分鐘方可達到0.66 mmol/(g PAOH)的最高值。PAOH的吸附容量也會隨著金屬離子初濃度的增加而上升並在某一高濃度後趨於最大值，其吸附行為符合Langmuir等溫吸附模式。當金屬離子溶液的pH值在4或5以上時，PAOH對Cu2+、Ni2+ 及Cd2+ 的吸附容量均維持在最高值；而pH低於3時，吸附量則顯著的下降並在pH 1時失去吸附能力。在競爭吸附方面，PAOH可自同為26 mM的Cu2+/Cd2+、Cu2+/Ni2+ 混合液中吸附到純的Cu2+ 且具有1.6 mmol/(g PAOH)的高吸附容量；亦可在pH 2的條件下自Ni2+/Cd2+ 混合液中分離出純Ni2+ 並維持0.236 mmol/(g PAOH)的吸附容量。以0.5 M的硝酸水溶液對已吸附金屬離子的PAOH進行5次的連續脫附/再吸附實驗後，確定PAOH對Cu2+、Cd2+ 及Ni2+ 的吸附能力依然可保持在最初吸附量的96%以上，證實PAOH是一個高吸附容量、具分離效能且可以回收再利用的螯合樹脂。

關鍵字：懸浮聚合；螯合樹脂；丙醇胺；吸附；重金屬離子。

A chelating resin, PAOH, was synthesized throug a reaction of crosslinked poly(glycidyl methacrylate) with 3-Amino-1-propanol for adsorbing Cu2+, Cd2+ and Ni2+ from aqueous solutions. PAOH and cPGMA were characterized by Fourier transform infrared spectroscopy, scanning electron microscope and energy dispersive x-ray spectrometer. Scanning electron microscope image showed that the diameter of PAOH was 250-350 μm and there were many pores on the resin’s surface. In non-competitive conditions, The adsorptions tended toward equilibrium at 7-8 min for Cu2+ and Ni2+ or 25 min for Cd2+ and the equilibrium adsorption capacities were ordered, Cu2+ [1.60 mmol/g (PAOH)] > Ni2+ [0.92mmol/g (PAOH)] > Cd2+ [0.66mmol/g (PAOH)]. The adsorption isotherms of Cu2+, Cd2+ and Ni2+ by PAOH followed the Langmuir isotherm. When the pH of Cu2+, Ni2+ and Cd2+ solutions > 4, the variance in adsorption capacity was insignificant. However, the adsorption capacity decreased dramatically from pH 3 to 1 and no adsorption was observed at pH 1. The competitive adsorption tests confirmed PAOH had good adsorption selectivity for the recovery of Cu2+ from Cu2+/Cd2+ and Cu2+/Ni2+ mixtures. When the pH of Ni2+/Cd2+ mixture was 2, PAOH could adsorb Ni2+ only. After 5 cycles of desorption-adsorption operations, the re-adsorption capacities of theses three metal ions could attain 96% of initial values. PAOH had good adsorption efficiency for the recovery Cu2+,Cd2+ and Ni2+ from aqueous solutions.

Keywords: suspension polymerization, chelating resin, adsorption, heavy metal ion, 3-Amino-1-propanol

目　錄
中文摘要 ------------------------------------------------------------------------------------- I
英文摘要 ------------------------------------------------------------------------------------- II
誌謝 ------------------------------------------------------------------------------------------- III
目錄 ------------------------------------------------------------------------------------------ IV
表目錄------------------------------------------------------------------------------------------ Vl
圖目錄------------------------------------------------------------------------------------------ Vll
附錄目錄-------------------------------------------------------------------------------------- Vlll
第一章 緒論 ------------------------------------------------------------------------------ 1
1-1 前言------------------------------------------------------------------------------------- 1
1-2 處理水中重金屬的方法 ------------------------------------------------------------ 2
1-3螯合高分子 ---------------------------------------------------------------------------- 4
1-3-1 螯合高分子的簡介 -------------------------------------------------------------- 4
1-3-2 螯合高分子的分類 -------------------------------------------------------------- 5
1-4螯合高分子的合成方式--------------------------------------------------------------- 9
1-5螯合高分子的應用--------------------------------------------------------------------- 9
1-6吸附理論 ------------------------------------------------------------------------------- 12
1-6-1吸附類型 --------------------------------------------------------------------------- 12
1-6-2影響螯合樹脂吸附金屬離子的因素-------------------------------------------- 12
1-6-3吸附模式 --------------------------------------------------------------------------- 15
1-6-4吸附動力----------------------------------------------------------------------------- 16
1-7 研究動機 ------------------------------------------------------------------------------ 17
第二章實驗內容 ---------------------------------------------------------------------------- 20
2-1藥品--------------------------------------------------------------------------------------- 20
2-2 儀器設備 ---------------------------------------------------------------------------- 21
2-3 實驗步驟------------------------------------------------------------------------------- 22
2-3-1 cPGMA的合成--------------------------------------------------------------------- 22
2-3-2螯合樹脂PAOH的製備---------------------------------------------------------- 23
2-3-3螯合樹脂(PAOH)的組成及結構分析------------------------------------------- 23
2-3-4 PAOH 吸附單一金屬離子之研究---------------------------------------------- 24
2-3-5連續脫附/再吸附 ------------------------------------------------------------------ 25
2-3-6 競爭吸附---------------------------------------------------------------------------- 26
第三章 結果與討論-------------------------------------------------------------------------- 27
3-1螯合樹脂PAOH的製備 ------------------------------------------------------------ 27
3-2螯合樹脂PAOH的分析與鑑定------------------------------------------------------ 27
3-2-1傅立葉紅外線光譜儀(FT-IR)之分析-------------------------------------------- 27
3-2-2掃描式電子顯微鏡觀察PAOH表面型態-------------------------------------- 29
3-2-3能量分散光譜儀(EDS)對吸附金屬離子前後的PAOH之分析------------- 29
3-3 PAOH吸附單一金屬離子之研究 ------------------------------------------------ 35
3-3-1 不同吸附時間對PAOH吸附容量的影響 ---------------------------------- 35
3-3-2 吸附容量與Cu2+、Ni2+、Cd2+ 之初濃度的關係 ---------------------------- 38
3-3-3不同的溶液pH值對吸附容量的影響------------------------------------------- 42
3-3-4 連續脫附/再吸附實驗 --------------------------------------------------------- 43
3-3-5同濃度之競爭吸附----------------------------------------------------------------- 45
第四章結論------------------------------------------------------------------------------------ 49
參考文獻--------------------------------------------------------------------------------------- 50

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