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研究生:林美幸
論文名稱:以天然物質-腐植酸作為強化土壤污染場址現地復育之研究
論文名稱(外文):Enhanced Remediation of Organic Contaminants in Contaminated Soil by Humic Acid Flushing
指導教授:陳士賢陳士賢引用關係
學位類別:碩士
校院名稱:國立高雄師範大學
系所名稱:生物科學研究所
學門:生命科學學門
學類:生物學類
論文種類:學術論文
論文出版年:2003
畢業學年度:90
語文別:中文
中文關鍵詞:腐植酸
相關次數:
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目前用於整治復育各種不同污染程度的土壤及地下水的方法正積極的發展中,例如使用共同溶劑(cosolvent)或介面活性劑(surfactant)沖刷以移除污染物,而利用腐植質(humic substances)移除污染物則是另一個目前極力發展的方法。腐植質是一種天然的聚合物(polymers),依其特性可分為三類:humic acid、fulvic acids及humin。過去的研究顯示水中存在腐植酸時可以增加疏水性物質(hydrophobic organic compounds, HOC)的溶解度和穩定性,利用此種特性預期可以移除疏水性的目標污染物。
因此本研究選定柴油中16種多環狀碳氫化合物(polynuclear aromatic hydrocarbons, PAHs)作為目標污染物,以200克柴油污染1000公克土壤後分別以10 mg/L、20 mg/L、40 mg/L、60 mg/L、100 mg/L、200 mg/L、400 mg/L、800 mg/L、1000 mg/L濃度之腐植酸沖刷受柴油污染之土壤,進行管柱的實驗,藉由萃取、分析沖刷前後殘留在管柱土壤中的PAHs含量,評估上述不同濃度腐植酸對柴油中PAHs的移除效率。
實驗結果顯示濃度為100mg/L的腐植酸對總污染物的移除量大於其他濃度的可達63.35,而針對部分個別的污染物,在不同的腐植酸濃度下移除量也有有不同的變化,如fluorene在不同的腐植酸濃度下,移除效率都不錯,但移除效率並沒有隨著濃度增高而有增加的趨勢,因此濃度100mg/L的腐植酸對本實驗而言是最佳的濃度。因此若欲進行移除柴油污染的現地復育時,除了使用化學溶劑沖洗法外,以腐植酸進行沖刷應是可以考慮的方法之一。
目次
中文摘要
英文摘要
第一章 前言----------------------------------------------------1
第二章 背景及原理----------------------------------------------5
一、土壤組成及特性---------------------------------------------5
二、污染物的來源及種類-----------------------------------------6
三、土壤污染可能的影響 ----------------------------------------8
四、有機污染物在土壤及地下水中的宿命及傳輸---------------------8
五、多環狀碳氫化合物------------------------------------------11
六、土壤復育技術簡介------------------------------------------12
七、膠體粒子--------------------------------------------------13
八、腐植質----------------------------------------------------15
第三章 材料和方法---------------------------------------------21
一、土壤的來源及其特性----------------------------------------21
二、 目標污染物-----------------------------------------------22
三、腐植酸----------------------------------------------------26
四、實驗方法--------------------------------------------------27
五、污染物的移除----------------------------------------------29
六、實驗裝置圖------------------------------------------------31
第四章 結果與討論---------------------------------------------32
一、土壤的基本性質--------------------------------------------32
二、兩種柴油之PAHs含量----------------------------------------32
三、界面分佈係數測定------------------------------------------38
四、腐植酸對土壤中PAHs的移除效率------------------------------46
第五章 結論---------------------------------------------------66
第六章 參考文獻-----------------------------------------------67
附錄 腐植酸沖洗PAHs層析圖(chromatogram)-----------------------71
第六章 參考文獻
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