臺灣博碩士論文加值系統

中文摘要
近年來，從台灣所發生的幾個土壤及地下水嚴重污染事件中發現，含氯有機化合物為主要污染物之一。因含氯有機化合物一般都具有較強的毒性，因此其對土壤及地下水環境所造成的污染成為大家所關心的一個焦點。
本研究主要探討零價金屬對含氯有機化合物之分解成效，分為三種處理方法，第一種為單一金屬技術，包括鐵及鋅；第二種為複合金屬技術，包括Fe0/Ni0、Fe0/Pd0、Zn0/Ni0、Zn0/Pd0及Fe0/Zn0等，以及第三種外加電壓促進反應技術。
希望藉由本研究進一步了解零價金屬對含氯有機化合物之分解機制，以及評估最佳之處理技術，以提供做為土壤及地下水污染整治復育之選擇。
研究結果發現，複合金屬Fe0/Ni0及Zn0/Ni0組合是一個相當好的處理方法，其不僅可以非常快速有效的將含氯有機化合物如：三氯乙烯、四氯化碳以及其子產物等快速的分解，其含氯中間產物之濃度都相當的低，幾乎都低於儀器的偵測濃度範圍，且經其處理過之處理水水質也都在合乎中華民國的飲用水安全範圍內。本研究認為複合金屬處理技術未來為一極具發展潛勢之技術。

ABSTRACT
In recent years, the soil and underground water of many sites in Taiwan have become heavy contaminated by chlorinated organic compounds. In general, these are more toxic, more carcinogenic and have endocrine disrupting effects. Therefore, it has become a leading environmental concern.
The objective of this research is to investigate the efficiency of using zero-valent metals for the degradation of chlorinated organic compounds. This compasses three methods: firstly are the single metal methods of using Fe0 or Zn0, secondly are the bimetallic methods such as Fe0/Ni0, Fe0/Pd0, Zn0/Ni0, Zn0/Pd0 and Fe0/Zn0 and thirdly are the enhancement methods by external voltage.
Through this research, we hope to further understand the mechanism behind the degradation of chlorinated organic compounds by zero-valent metals. Furthermore, we hope to offer the optimum treatment technology for the remediation of soil and groundwater contamination.
Results have indicated that, the combinations of bimetallic Fe0/Ni0 and Zn0/Ni0 are the most viable solution. They effectively degrade chlorinated organic compounds such as TCE, CCl4 and their daughter compounds. This also includes the reduction of the intermediated chlorinated organic compounds levels to below detectable limits.
The quality of the treated water meets all standard for drinking water of the R.O.C.. In the future, I believe this technology will be in the forefront for solving this environmental issue.

封面
目
謝誌
中文摘要
英文摘要
目錄
圖目錄
表目錄
第一章研究緣起
第二章 理論背景
2-1.含氯有機化合物之一般特性
2-2.斗閘系統--零價金屬之反應性透水欄柵
2-2-1.零價金屬處理技術之源起
2-2-2.現地斗閘處理系統
2-3.零價金屬對含氯有機化合物之脫氯分解機制
2-4.含氯有機化合物之脫氯分解機制
2-5.零價金屬對含氯機化合物之脫氯分解速率
2-6.反應後水質pH之變化
2-7.電化學理論--發生氫氣的過電壓
2-8.複合金屬對反應速率之影響
2-9.金屬觸媒--鎳之催化機制
第三章 研究內容與方法
3-1.研究內容
3-2.研究方法
3-2-1.實驗設計
3-2-2.實驗器材
3-2-3.實驗配置
3-2-4.分析方法
第四章 結果與討論
4-1.零價金屬鐵對含氯有機化合物之分解反應
4-2.零價金屬鋅對含氯有機化合物之分解反應
4-3.複合金屬對含氯有機化合物之分解反應
4-4.外加電壓對零價金屬脫氯分解反應之促進作用
4-5.填充管柱模擬斗閘系統中反應性透水牆試驗
4-6.處理水水質之變化
4-6-1.處理水pH之變化
4-6-2.處理水鄉金屬離子之滲出情形
4-6-3.處理水中氯離子之濃度變化
第五章 結論與建議
第六章 參考文獻
附錄一:圖之數據

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