| 研究生: |
蕭明昌 Hsiao, Ming-Chang |
|---|---|
| 論文名稱: |
添加檸檬酸鹽與矽酸鹽製備之氫氧化鐵吸附砷鎘特性研究 Influences of Ferric Hydroxide Prepared with addition of Citrate/Silicate on Adsorption of As(V)/Cd(II) |
| 指導教授: |
桂椿雄
Kuei, Chun-Hsiung Jacob |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系碩士在職專班 Department of Chemistry (on the job class) |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 92 |
| 中文關鍵詞: | 檸檬酸鹽 、氧化鐵 、砷 、吸附 、鎘 、矽酸鹽 |
| 外文關鍵詞: | Ferric Hydroxide, silicate, adsorption, arsenic, citrate, cadmium |
| 相關次數: | 點閱:117 下載:2 |
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本研究分別以Citrate/Fe(III)與Silicate/Fe(III)在不同莫耳比下製備氧化鐵吸附材料,探討製備之氫氧化鐵之表面特性之鑑定、晶相及內部結構變化、並分別與五價砷與三價鎘進行吸附試驗,評估製備之氫氧化鐵對砷與鎘之吸附特性。
X-射線粉末繞射的結果顯示,單純Fe(Ⅲ)及Silicate/ Fe(Ⅲ)製備之氫氧化鐵,皆屬於非結晶性之氫氧化鐵。添加矽酸鹽對氫氧化鐵製備之結構無顯著之影響,添加檸檬酸鹽導致結晶型態改變。
在Citrate/Fe(Ⅲ)及Silicate/Fe(Ⅲ)吸附二價鎘之系統中,藉由IR的光譜圖,觀察不到官能基的改變,僅能說明Citrate/Fe(Ⅲ)及Silicate/Fe (Ⅲ)吸附二價鎘之系統之並非特定吸附之系統。
在Citrate/Fe(Ⅲ)及Silicate/Fe(Ⅲ)吸附五價砷之系統中,藉由IR的光譜圖,可以觀察到官能基的改變,且與吸附量有同樣的趨勢,能說明Citrate/Fe(Ⅲ)及Silicate/Fe(Ⅲ)吸附二價鎘之系統可屬於特定吸附之系統。
This study is to discuss with the surface characteristics, crystalline identification and inner structural changes of the Ferric Hydroxide which are prepared with pure Fe(Ⅲ), citrate/Fe(Ⅲ) and silicate/Fe(Ⅲ) solutions at different molar ratios. This study is also to compared the adsorption capabilities of these Ferric Hydroxide serving as the adsorptive materials in containing As(V)/Cd(II) solutions through adsorption experiment..
By means of the XRD identification analysis, the synthetic iron oxides of pure Fe(Ⅲ) and silicate/Fe(Ⅲ) are non-crystal Ferric Hydroxide, but the synthetic iron oxide of citrate/Fe(Ⅲ) is crystal Ferric Hydroxide. The inner structural will be changed which prepared with citrate/Fe(Ⅲ) solutions
It can not find change of functional groups by using FT-IR in the Cd(II) adsorption system. We can only refer to this system is not Specific adsorption.
It can find change of functional groups by using FT-IR in the As(V) adsorption system. And it shows the similar trend with adsorption amount of arsenic. We can refer to this system is Specific adsorption.
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