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研究生:謝啟芝
研究生(外文):Chii-Jy Shieh
論文名稱:乳化內相凝膠法製備海藻膠微球對重金屬吸附行為研究
論文名稱(外文):Study on Adsorption Behavior of Heavy Metal Ions onto Alginate Microsphere Prepared by Emulsification/Internal Gelation Method.
指導教授:官常慶官常慶引用關係
指導教授(外文):Charng-Ching Kuan
學位類別:碩士
校院名稱:靜宜大學
系所名稱:應用化學研究所
學門:自然科學學門
學類:化學學類
論文種類:學術論文
論文出版年:2005/02/
畢業學年度:93
語文別:中文
論文頁數:67
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本次實驗主要研究以海藻酸鈉微球作為吸附劑去除水中的銅和鉛離子金屬;海藻酸鈣微膠囊和微球是以乳化內相凝膠法製備而得,並且對於其製備方法和技術加以討論;空心微膠囊的最大吸附量為123.46mgCu/g 、588.24mgPb/g,實心微球的最大吸附量為151.52mgCu/g 、 769.23mgPb/g ;吸附能力隨著 pH的增加而提高,當pH=5時達到穩定最佳吸附狀態;實驗結果顯示,以海藻酸鈉微球作為吸附劑能夠有效地吸附廢水中的重金屬離子。
Copper and lead removal from aqueous solution by alginate microbeads was investigated theoretically and experimentally this study. Ca-alginate microcapsules and microspheres were prepared by emulsification/ internal gelation method and the adsorption behavior were discussed. The saturation adsorption capacity were 123.46mgCu/g and 588.24mg Pb/g for microcapsules beads and 151.52mgCu/g and 769.23mgPb/g for microspheres beads . The adsorption of heavy metal Cu or Pb increased with increasing pH and reach a plateau value at pH 5.0. The experimental results shows that the microspheres beads prepared by Ca-alginate is an effective absorbent for treatmeant heavy metal ions in waste water.
目錄.....................................I
表目錄..................................IV
圖目錄...................................V
第一章 前言............................. 1
第二章 原理............................. 3
2-1 海藻酸鈉、海藻酸鈣的介紹.......... 3
2-1-1 海藻酸鈉簡介.................. 3
2-1-2 海藻酸鈣...................... 5
2-2 重金屬............................ 6
2-2-1重金屬的定義....................6
2-2-2重金屬的毒性範圍................7
2-2-3重金屬對人體之危害..............7
2-2-4重金屬在水體中的化學行為........10
2-3金屬與藻膠的吸附模式.............. 13
2-4等溫吸附模式...................... 15
2-4-1 Freundlich等溫吸附模式........16
2-4-2 Langmuir等溫吸附模式..........16
2-5動力模式.......................... 18
第三章 實驗............................ 19
3-1 實驗藥品......................... 19
3-2 實驗儀器......................... 20
3-3 實驗方法..........................21
3-3-1 吸附劑製備....................21
3-3-2重金屬吸附實驗................ 23
3-3-3 掃描式電子顯微鏡觀測微膠囊表面形態........................... 25
3-3-4 海藻膠微球膠凝速率的測定........................... 25
3-3-5 膨潤率測試....................26
3-3-6 粒徑大小測量................. 26
第四章 結果與討論...................... 28
4-1 動力吸附學效應................... 28
4-1-1 不同幾丁聚醣含量對幾丁聚醣/海藻 酸鈉珠粒之吸附效應............28
4-1-2 空心微膠囊與實心微球之吸附效應.......................... 28
4-2 不同pH溶液對金屬吸附之影響.......29
4-3 等溫吸附線........................30
4-3-1 空心微膠囊與實心微球對銅金屬之
吸附效應..................... 30
4-3-2 空心微膠囊與實心微球對鉛金屬之
吸附效應..................... 32
4-4 雙重重金屬存在下之吸附效應........32
4-5 吸附/脫附實驗.....................33
4-6 掃描式電子顯微鏡(SEM)觀測微球.....34
4-7 微膠囊膠凝速率....................34
第五章 結論............................ 36
第六章 參考文獻........................ 57
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