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年度	103	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	財團法人成大研究發展基金會	申請系所	環境研究中心
專案主持人	盧幸成	職等/職稱	助理研究員
專案中文名稱	緩釋型類芬頓綠色工程材料之研發與應用
中文關鍵字	類芬頓；綠色材料；透水性反應牆；緩釋型
專案英文名稱	The development and application of Fenton-like green materials in sustained releasing form
英文關鍵字
執行金額
執行期間	2013/11/25 至 2014/11/24
計畫中文摘要	近年來，台灣工業持續的發展，污染控制不當下，日積月累衍生出的土壤及 地下水污染問題，已成為國內外關注的重要議題。加油站及石化工業之大型 儲油槽的管線設備皆設置於地下，由於儲槽管線老舊腐蝕失修及操作管理不 當等因素，洩漏機會隨使用年限增加而增加，再者油品中之 BTEX、MTBE 經地下水的流動及傳導，逐漸擴大其污染範圍至下游處，嚴重影響環境土壤 及地下水水質並威脅鄰近居民生活安全。 Fenton-like 氧化法為 Fenton 法所衍生之土壤與地下水現地化學氧化復育技 術，透過鐵氧化合物催化 H2O2產生氫氧自由基以破壞土壤或地下水中有機 污染物，藉以降低污染物毒性甚至達到礦化成H2O及CO2之效果。Fenton-like 法因具低成本、易取得且無毒性等優點，因此具有相當大的發展潛力。本計 畫擬透過自行開發之複合型鐵氧化物 Fenton-like 反應材，結合透水性混凝土 製備工法，開發緩釋型類芬頓綠色工程材料，並以 BETX、MTBE 為污染物 標的，期能利用外加 H2O2氧化劑與透水性反應材產生異相催化反應，發展 土壤地下水中有機物之氧化分解綠色整治技術，提供未來現地以緩釋型類芬 頓綠色工程材料，應用於 BTEX、MTBE 破壞去除。 研究結果發現，自行合成之 A 型複合型鐵氧化物，磁鐵礦晶相較 B 型複合 材顯著，系統氫氧自由基的釋放能力可以由 pCBA 的擬一階反應動力模式進 行探討，其中純物質鐵氧化物反應速率常數(kobs)值普遍大於自行合成之複合 型鐵氧化物，A 型鐵系複合材 Fenton-like 反應性明顯優於 B 型鐵系複合材。 後續將 A 型鐵系複合材運用於管柱試驗，模擬以透水性反應牆去除土壤地 下水中有機污染物。由粒狀充填管柱與塊狀充填試驗皆可發現，隨著模擬地 下水污染物於管柱行進距離越長，污染物降解濃度越高，經過 5 個採樣批次 （sampling run）效果仍然不變。粒狀充填管柱試驗中，BETX 最高去除率為 94%，MTBE 最高去除率為 53%。塊狀充填管柱試驗中，BETX 最高去除率 為 46%，MTBE 最高去除率為 70%。由於管柱長度僅 30 cm，從污染物降解 趨勢推論，延長管柱長度應可提高污染物去除率，開發之反應材具有作為 Fenton-like 透水性反應牆之潛力。
計畫英文摘要	The continuously development of industries over the decades in Taiwan has brought about many soil and underground water pollutions. Without proper pollution control and management, it has become an important issue worldwide. The pipeline of the huge oil tank in gas stations and petrochemical factories are installed underground. The problems of the pipeline such as erosion caused by aging and poor maintenance will cause oil leakage and the chance will increased with the year of usage. Moreover, the BTEX or MTBE in the oil is spread to and contaminate the downstream by the flow of the underground water. It greatly affects the soil and underground water as well as being a threat to the living safety of the residents nearby. Fenton-like reaction is a soil and underground chemical oxidation remediation technology derived from Fenton reaction. This remediation technology is achieved by using iron oxides to catalyze H2O2 and produce free hydroxyl radicals to destroy the organic pollutants in the soil or underground water, in order to lower the pollutant toxicity and mineralize them to H2O and CO2. Fenton-like reaction has many great advantages including low-cost, accessible and non-toxic, which give it a great potential to be developed. This project is to develop Fenton-like green material in sustained releasing form by developing a multi-iron oxides Fenton-like reaction material in combination with permeable concrete paving blocks, and BETX and MTBE are used as target pollutant, hoping to apply the H2O2 oxidative and permeable reaction material to produce heterogeneous reaction. The preliminary result showed that the crystal intensity of magnetite in synthesis Type A iron-oxide composite material is higher than Type B. The releasing efficiency of system OH free radicals can be discussed with pCBA pseudo-first-order model. It can tell from the result that pure element iron oxides reaction coefficient (kobs) is greater than Type A iron-oxide composite material. The reaction efficiency of Type A iron-oxide composite material is significantly greater than Type B iron-oxide composite material. Further study applies Type A iron-oxide composite material to column test, to simulate permeable reactive barriers to remove ground water organic pollutant. It is showed from grinding filling column and block filling column tests that, the longer the column length, the higher the pollutant degradation concentration. The effect remains unchanged even with 5 sampling runs. In the test with grinding filling column, the highest removal rate of BETX is 94%, and the highest removal rate of MTBE is 53%. In the test with block filling column, the highest removal rate of BETX is 46%, and the highest removal rate of MTBE is 70%. The column length is 30 cm only, inferring from the tendency of pollutant degradation, lengthen the length of the column should increase the removal rate of the pollutant; and develop the reactive material which has the potential to be used as Fenton-like permeable reactive barriers.