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摘要


本研究以共詞分析方法,研究污染場址戴奧辛整治或因整治而衍生戴奧辛在國際的研究趨勢。研究中以1992年至2018年以來,Web of Science資料庫中收集文章中同時具戴奧辛(dioxins)與整治(remediation)之關鍵字者,進行共詞分析。分析結果顯示,在污染物的發生頻率方面,戴奧辛在期刊上之表示方法及種類,因其前趨物及衍生物的種類繁多,使其本身或相關化學物質呈現多元。在整治技術上,以物化技術最多,包含的處理程序及類型也廣。若以直接應用在處理戴奧辛污染物上,自1992年來的整體趨勢走向,以及近三年的趨勢而言,皆以熱脫附或熱處理為主要研究題目,有效的污染介質前處理、搭配添加如奈米顆粒或其他藥劑,以及後端二次污染處理,則為重要研究焦點。在生物整治技術方面,除了持續篩選可用微生物研究主題外,以土壤根系微生物群代謝途徑解析、生物刺激及增加生物可及性的界面活性劑為研究主要議題。另一方面,對整體處理流程及二次污染的環境及風險管控,也是國際研究關注的重點。本研究透過共詞分析之方法,搭配文獻回顧,找出該議題研究發展之趨勢,並進一步針對台灣戴奧辛污染場址提出研發方向建議。

並列摘要


The research trends relevant to remediation of contaminated sites and the generation of dioxins resulting from remediation were studied using a co-word analysis. Research papers with keywords including both "dioxins" and "remediation" appearing from 1992 to 2018 in the Web of Science database were used for the analysis. The results showed that the contaminants relevant to dioxins are very diverse due to the multiple sources of precursors and the complexity of treatment products. The most common group of remediation technologies appearing in the papers comprised physico-chemical methods. In the case of technologies targeting treatment of dioxins, both from 1992 to the present and in the last three years, thermal desorption and thermal treatment were the major remediation methods used, and studies on effective pretreatment methods, the addition of nanoparticles and chemicals, and secondary pollution control were the major focuses relevant to the thermal methods. Bioremediation was another topic of study, where the major focuses of these studies included isolation of appropriate microbes, metabolic biodegradation pathways, biostimulation, and bio-accessible surfactants. In addition, evaluation of overall treatment processes and control of environmental impact and risk were also important research topics relevant to the remediation of dioxins. The results obtained in this study provide useful research trends on the studied topic and may offer potential research directions to those who are interested in the remediation of dioxins.

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