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[ 實驗室名稱 ]
環境復育實驗室Environmental Remediation Lab.
指導老師 / 廖文彬 教學助教 / 無成員
實驗室位置 / 6F R619 聯絡電話 / 619
E-mail / wpliao@nchu.edu.tw
 

過去二十年來實驗室的進展可分為三個階段,從台灣的廢棄物掩埋處理至土壤污染的整治,開發出土壤電動力之技術及水中電芬頓的化學分解技術。

 

〈一〉1980年至2000年掩埋場處理了大量的廢棄物,有機物在厭氧的環境中,分解為甲烷氣與二氧化碳而釋放至大氣中,甲烷氣可以做為回收成為能源,若是放至大氣層則成為溫室氣體。研究上,針對甲烷的產氣量做資源化之探討;同時利用覆土中甲烷氧化菌能分解甲烷的特性,增進其降解能力,而減少溫室效應。

 

〈二〉2000年以來台灣的土壤污染事件頻繁,本研究室以電動力法整治受污染的土壤及地下水:(a)探討土壤中重金屬及有機污染物之移除回收的工程操作條件;(b)利用滲透牆的反應性物質與污染物產生分解或吸附之反應機制。(c)其他工程上的應用,包括飛灰的資源物質可採電化學的技術加以回收或固化後供資源利用。未來可以朝廢水污泥的改質,或回收電子廢棄物中貴重物質的發展,或焚化底渣的除鹽效用等等

 

〈三〉2010年以後之未來,台灣產生的污染物將無法以傳統方式分解,水中難分解的有機物以電化學結合芬頓作用所產生的自由基來分解,是最近想要開發的技術,尚有-芬頓作用合力產生的各種分解能力,帶來了非常具有挑戰性之研究方向。

 

Across the past 20 years, the laboratory of environment remediation can be divided into three stages. Its research history started from the topics on wastes disposal by landfill in Taiwan, then on the remediation of contaminated soil, and currently to develop the treatment either by Electrokinetic remediation of contaminated soil or wastewater treatment by Electro-Fenton process.

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Between 1980 and 2000, most household wastes were disposed of in landfills. Organic matter, which is decomposed in anaerobic condition, will emit methane and the carbon dioxide. Methane release to the atmosphere will pose greenhouse effect, but we can recycle it as energy.  We probe into the generation and the recycling of methane gas simultaneously. Meanwhile, methane oxidation by Methanotrophics on the surface of landfill was further investigated in order to    decompose the methane escaped and to reduce greenhouse gas.

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Taiwan had many soil-pollution incidents in 2000s. We focused on the Electrokinetic technique to remedy contaminated soil and to treat the waste water. Three subjects have been thoroughly studied:

(a)     Engineering study on the operation conditions for better removal rates of heavy metals or organic pollutants from contaminated soils.

(b)    Use of Permeable Reactive Barriers (PRB) to react with the pollutants in groundwater, which might have responsive mechanisms of decomposition and adsorption.

(c)     Other engineering applications, including the stabilization of fly ash and then recycle the resources by electro-chemical process.

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The newly merged pollutants can’t be degraded by traditional approaches which are based only on a phase transfer scenario. The refractory organics in wastewater can be treated successfully by free .OH radicals generated from electrochemical reaction known as the electro-Fenton reaction. Recently we want to develop a green technique, which is Photo-Fenton; it has much ability of degradation and a great challenge in the future.