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年度	99	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	國立高雄大學	申請系所	土木與環境工程學系
專案主持人	袁菁	職等/職稱	教授
專案中文名稱	1,2二氯苯污染土壤之現地永續處理技術之研究
中文關鍵字	1,2二氯苯；雙金屬氧化電極；電化學氧化；電化學地質氧化技術；土壤整治
專案英文名稱
英文關鍵字
執行金額
執行期間	2010/12/29 至 2011/12/28
計畫中文摘要	二氯苯在工業界廣泛被使用，如工業原料、農藥及中間原料與有機溶劑，因 其低溶解性、高毒性及不易降解之特性，因此很難以傳統之抽取處理法進行地下 環境污染之處理，一般常用之液相處理技術包括吸附法、生物處理、觸媒還原及 薄膜分離法等，至於土像處理技術較不普及。 本計畫目的即在於改變電極種類、操作流質種類及操作流質濃度等電動力參 數進行實驗，並藉此討論不同參數對於土相中 1,2-二氯苯處理效率之影響，本實 驗使用 Ti、RuO2/Ti(RT)及 MnO2/Ti(MT)三種電極，操作流質則選用界面活性劑 (SDS)、Na2SO4、NaOH 及 NaCl，探討電極種類、操作流質種類及操作流質濃度 之影響。電滲透流係數(Ke)界於 8.7× 10-4 ~16.1× 10-4 cm 2 /V-s，其中以 RT-NaCl 系 統為滲透系最佳。Ti 電極其處理效率為 34.4%，降解率可達 8.6%~19.8%，而使 用 RT 電極於不同操作流質之處理效率為 23.3%~75.4%，其中降解率為 11.0% ~ 29.3%，利用 MT 做為電極處理土壤時，其效率依流質不同約在 21.4~65.2%，降 解率則為 9.9%~27.4%。使用 RT 電極之流質濃度改變實驗中，隨 SDS 濃度提升， 整體之處理效率亦由 58.9%提升至 75.4%，而降解率亦隨 SDS 濃度提升而由 16.2%提升至 23.4%，使用 NaCl 做為流質時，土壤之導電性大幅增加，同時增加 電化學反應及電動力行為的強度，提升降解率(25.3%至 29.3%)，隨其濃度提升處 理效率亦有所增加(62.9~66.1%)。 雙金屬氧化電極特性藉由循環伏安法、SEM 及 TEM 分析之結果亦進行彙 整討論。
計畫英文摘要	Dichlorobenzenes (DCB) are widely used in industrial and domestic uses, such as intermediates in the synthesis of other chemicals, solvents, and hygiene products. It results in ubiquitous in all major environmental compartments. By their nature, they are highly toxic and poorly biodegradable in environment. It is difficult to remove dichlorobenzenes from subsurface environments using traditional pump-and treat technologies. Most technologies have been focused on removal of 1,2 dichlorobenzene (1,2 DCB) in aqueous phase, such as adsorption and biotransformation, catalytic reduction, and membrane separation. However, less attention was focused on 1,2 DCB remediation in soil. This project was aimed to investigate remediation efficiency of 1,2 DCB in soil matrix by electrokinetic process. The experimental parameters included electrode type (Ti, RuO2/Ti, and MnO2/Ti), processed fluid (SDS, Na2SO4, NaOH, and NaCl), and concentration. Results showed that the permeability in investigated system was in range of 8.7× 10-4 ~16.1×10-4 cm 2 /V-s. The highest permeability was found in RT/NaCl system. The treatment / degradation efficiency for Ti, RT (RuO2/Ti), and MT(MnO2/Ti) were 34.4%/8.6~19.8%, 23.3~75.4%/11.0~29.3%, and 21.4~65.2%/9.9~27.4%, respectively. In RT-SDS system, the treatment / degradation efficiency increased from 58.9%/16.2% to 75.4%/23.4% as concentration of SDS increased. In RT-NaCl system, higher electrochemical reactivity and electrokinetic performance were found, which resulted from high conductivity of NaCl. The treatment / degradation efficiency increased from 62.9%/25.3% to 66.1%/29.3% as concentration of NaCl increased. The electrochemical properties of electrode characterized by cyclic voltammetry and the surface characterestics of electrode investigated by Scanning electron microscppy and Transmission electron microscopy were all investigated in the study.