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環境介質中壬基苯酚聚乙氧基醇(NPnEO)類之光觸媒催化降解及電動力復育...

國立高雄大學土木與環境工程學系碩士班

環境介質中壬基苯酚聚乙氧基醇(NPnEO)類之光觸媒催化降解及電動力復育處理技術之研究 = The degradation and removal of nonylphenol polyethoxylates (NPnEO/NP) by photodegradation and electrokinetic remediation in environmental matrices

Record Type:	Language materials, printed : monographic
Paralel Title:	The degradation and removal of nonylphenol polyethoxylates (NPnEO/NP) by photodegradation and electrokinetic remediation in environmental matrices
Author:	陳琨焯,
Secondary Intellectual Responsibility:	國立高雄大學
Place of Publication:	[高雄市]
Published:	撰者;
Year of Publication:	2008[民97]
Description:	162面圖，表 : 30公分;
Subject:	壬基苯酚聚乙氧基醇
Subject:	nonylphenol
Online resource:	http://handle.ncl.edu.tw/11296/ndltd/83426017936643483023
Notes:	指導教授：袁菁
Notes:	參考書目：面106-117
Notes:	附錄：固、液相中NP萃取率分析等4種
Summary:	本研究係利用光觸媒催化及電動力程序分別進行液相中NP-9 (Ave. EO=9)及土相中NP之處理。液相光催化程試探討pH環境、複合光觸媒種類及數量、增益劑(H2O2)添加及NP-9初始濃度等操作參數對降解效率之影響，並解析NPnEO降解途徑。電動力管柱試驗處理受NP污染之土壤，考量操作流質、電位坡降、操作天數及NP初始濃度等影響參數，並探討其去除機制。　　首先探討液相中NP-9與奈米碳管之吸附行為，結果顯示pH值愈小之環境下吸附量愈高，於NP-9濃度為20 mg/L、pH=2.0時吸附量可達188.8 mg/g。經等溫吸附實驗後進行模擬與迴歸運算後，顯示奈米碳管對於NP-9之等溫吸附較符合Freundlich等溫吸附方程式，且其屬於物理性吸附，為自發性放熱反應。　　經使用複合光觸媒進行光催化降解NP-9之結果顯示，NP-9於光催化降解過程中長鏈之NPnEO逐漸被分解為中、短鏈部分與NP。添加CNT於TiO2製成奈米複合光觸媒，其中CNT可以暫時儲存TiO2於光催化所釋放之電子，有效的減緩電子與電洞對再結合之情況，致降解之效率較單獨TiO2者為佳。光催化降解NP-9時，當pH環境範圍於3-11時，光降解效率隨著pH值降低而有提昇。當添加10~100 Mg/L H2O2時於光催化系統時，其平均降解效率可高達91.1%以上，因添加H2O2可有效增加氫氧自由基之產生，使得降解速率明顯提升。　　電動力管柱試驗去除土相中NP實驗中，顯示較適合之電位坡降1.0 V/cm之處理效果較佳。增加電動力處理時間至8-15天之總去除率分別5天之1.1-1.3倍，可有效提升NP之去除效率。經測試不同操作流質發現對於NP之去除效率依序為： Methanol (52.8-68.8%) >NaOH (42.8-53.7%)> CA (35.8-38.7%)>D.I. Water (29.6%)。電動力法處理NP時，NP由陰極端出流收集為主其佔88.3-95.1%，隨著去除效率愈高於陰極端所收集之總量愈高，由此可知電動力法處理土壤中NP其主要去除機制，係藉由電滲透流將其由陽極往陰極方向移動。　　整體結果顯示，以複合光觸媒(TiO2/CNT)可有效將NP-9降解，且降解效率較單獨使用TiO2為高，NP-9在光催化降解過程其由長鏈EO物質轉變為較短鏈及NP。而電動力系統可效處理土相中NP，主要收集量於陰極端，依判斷主要去除機制係藉由電滲透流將NP由陽極往陰極方向移動。 Photocatalysis and electrokinetic (EK) process for the remediation were applied of nonylphenol polyethoxylates (NP-9) in aqueous phase and nonylphenol (NP) in soil phase, respectively. Several process parameters were investigated for their degradation efficiency during the aqueous phase photocatalytic process. These process parameters included the aqueous pH environment, types and amounts of composite photocatalyst, addition of enhancing reagent (H2O2) and initial concentration of NP-9. Besides, the degradation pathway of nonylphenol polyethoxylates (NPnEO) was analyzed. Additional parameters affecting the EK process included the processing fluid, potential gradient, processing time and initial concentration of NP were investigated in this research. The removal mechanism of NP using the EK process was also investigated. 　　The absorption behavior of NP-9 in aqueous phase on the carbon nanotube (CNT) was investigated. The absorption capacity was enhanced as pH decreased. The maximum absorption capacity was up to 188.8 mg/g at pH 2.0. The isothermal absorption of NP-9 on the carbon nanotube was conformed to the Freundlich’s absorption formula. Additionally, it was considered as a physical absorption and spontaneous exothermic reaction.　　During the photodegradation process of

環境介質中壬基苯酚聚乙氧基醇(NPnEO)類之光觸媒催化降解及電動力復育處理技術之研究 = The degradation and removal of nonylphenol polyethoxylates (NPnEO/NP) by photodegradation and electrokinetic remediation in environmental matrices
陳, 琨焯

環境介質中壬基苯酚聚乙氧基醇(NPnEO)類之光觸媒催化降解及電動力復育處理技術之研究 = The degradation and removal of nonylphenol polyethoxylates (NPnEO/NP) by photodegradation and electrokinetic remediation in environmental matrices / 陳琨焯撰 - [高雄市] : 撰者, 2008[民97]. - 162面 ; 圖，表 ; 30公分.
指導教授：袁菁參考書目：面106-117附錄：固、液相中NP萃取率分析等4種.
壬基苯酚聚乙氧基醇nonylphenol

環境介質中壬基苯酚聚乙氧基醇(NPnEO)類之光觸媒催化降解及電動力復育處理技術之研究 = The degradation and removal of nonylphenol polyethoxylates (NPnEO/NP) by photodegradation and electrokinetic remediation in environmental matrices
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330 $a 本研究係利用光觸媒催化及電動力程序分別進行液相中NP-9 (Ave. EO=9)及土相中NP之處理。液相光催化程試探討pH環境、複合光觸媒種類及數量、增益劑(H2O2)添加及NP-9初始濃度等操作參數對降解效率之影響，並解析NPnEO降解途徑。電動力管柱試驗處理受NP污染之土壤，考量操作流質、電位坡降、操作天數及NP初始濃度等影響參數，並探討其去除機制。　　首先探討液相中NP-9與奈米碳管之吸附行為，結果顯示pH值愈小之環境下吸附量愈高，於NP-9濃度為20 mg/L、pH=2.0時吸附量可達188.8 mg/g。經等溫吸附實驗後進行模擬與迴歸運算後，顯示奈米碳管對於NP-9之等溫吸附較符合Freundlich等溫吸附方程式，且其屬於物理性吸附，為自發性放熱反應。　　經使用複合光觸媒進行光催化降解NP-9之結果顯示，NP-9於光催化降解過程中長鏈之NPnEO逐漸被分解為中、短鏈部分與NP。添加CNT於TiO2製成奈米複合光觸媒，其中CNT可以暫時儲存TiO2於光催化所釋放之電子，有效的減緩電子與電洞對再結合之情況，致降解之效率較單獨TiO2者為佳。光催化降解NP-9時，當pH環境範圍於3-11時，光降解效率隨著pH值降低而有提昇。當添加10~100 Mg/L H2O2時於光催化系統時，其平均降解效率可高達91.1%以上，因添加H2O2可有效增加氫氧自由基之產生，使得降解速率明顯提升。　　電動力管柱試驗去除土相中NP實驗中，顯示較適合之電位坡降1.0 V/cm之處理效果較佳。增加電動力處理時間至8-15天之總去除率分別5天之1.1-1.3倍，可有效提升NP之去除效率。經測試不同操作流質發現對於NP之去除效率依序為： Methanol (52.8-68.8%) >NaOH (42.8-53.7%)> CA (35.8-38.7%)>D.I. Water (29.6%)。電動力法處理NP時，NP由陰極端出流收集為主其佔88.3-95.1%，隨著去除效率愈高於陰極端所收集之總量愈高，由此可知電動力法處理土壤中NP其主要去除機制，係藉由電滲透流將其由陽極往陰極方向移動。　　整體結果顯示，以複合光觸媒(TiO2/CNT)可有效將NP-9降解，且降解效率較單獨使用TiO2為高，NP-9在光催化降解過程其由長鏈EO物質轉變為較短鏈及NP。而電動力系統可效處理土相中NP，主要收集量於陰極端，依判斷主要去除機制係藉由電滲透流將NP由陽極往陰極方向移動。 Photocatalysis and electrokinetic (EK) process for the remediation were applied of nonylphenol polyethoxylates (NP-9) in aqueous phase and nonylphenol (NP) in soil phase, respectively. Several process parameters were investigated for their degradation efficiency during the aqueous phase photocatalytic process. These process parameters included the aqueous pH environment, types and amounts of composite photocatalyst, addition of enhancing reagent (H2O2) and initial concentration of NP-9. Besides, the degradation pathway of nonylphenol polyethoxylates (NPnEO) was analyzed. Additional parameters affecting the EK process included the processing fluid, potential gradient, processing time and initial concentration of NP were investigated in this research. The removal mechanism of NP using the EK process was also investigated. 　　The absorption behavior of NP-9 in aqueous phase on the carbon nanotube (CNT) was investigated. The absorption capacity was enhanced as pH decreased. The maximum absorption capacity was up to 188.8 mg/g at pH 2.0. The isothermal absorption of NP-9 on the carbon nanotube was conformed to the Freundlich’s absorption formula. Additionally, it was considered as a physical absorption and spontaneous exothermic reaction.　　During the photodegradation process of
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