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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 駱尚廉 | |
| dc.contributor.author | Chang-Chieh Huang | en |
| dc.contributor.author | 黃君傑 | zh_TW |
| dc.date.accessioned | 2021-06-16T13:42:16Z | - |
| dc.date.available | 2014-07-19 | |
| dc.date.copyright | 2013-07-19 | |
| dc.date.issued | 2013 | |
| dc.date.submitted | 2013-07-11 | |
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Carbon Tetrachloride Degradation: Effect of Microbial Growth Substrate and Vitamin B12 Content. Environ Sci Technol 34, 1751-1757. EnviroMetal Technologies Inc http://www.eti.ca/animation.html OceanWorld - Texas A&M University http://oceanworld.tamu.edu/resources/environment-book/groundwaterremediation.html http://oceanworld.tamu.edu/resources/environment-book/Images/DNAPL.gif US NanoMetro Map - Project on Emerging Nanotechnology, PEN http://www.nanotechproject.org/inventories/map/ Nanoremediation Map - Project on Emerging Nanotechnology, PEN http://www.nanotechproject.org/inventories/remediation_map/ | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/62341 | - |
| dc.description.abstract | 二氯甲烷是地下水中一種頑強的含氯有機汙染物，難以藉由零價鐵金屬還原降解。本研究發現在還原條件下，藉由零價銅金屬奈米顆粒與維生素 B12作為催化劑能有效催化二氯甲烷還原降解。批次實驗指出當存在銅金屬於硼氫化納還原條件時，二氯甲烷會被迅速降解。而當單獨使用銅金屬但無外加還原劑、或者單獨硼氫化鈉還原條件而無添加銅金屬催化劑時則無法降解二氯甲烷。而銅金屬對於維生素 B12（一種電子媒介體，可催化含氯有機物的還原降解）在檸檬酸鈦還原條件下去除二氯甲烷也有明顯的加強效果，當添加零價銅進入維生素 B12系統後，二氯甲烷的降解速率會比添加銅金屬之前增加五倍，效果十分顯著。二氯甲烷的降解速率會隨著銅金屬劑量或維生素 B12劑量的增加而增加。產物分析證明二氯甲烷的消失是經由還原降解。系統中產生的銅離子濃度低於飲用水標準，這顯示銅金屬奈米顆粒的使用不會造成二次汙染、是很有潛力的汙染物去除材料。可預期此結合零價銅金屬奈米顆粒與維生素 B12（或其他電子媒介體）之系統很有潛力作為地下水汙染整治之用，特別是對於零價鐵無法整治的頑強含氯有機汙染物。 | zh_TW |
| dc.description.abstract | Dichloromethane (DCM) is a recalcitrant groundwater contaminant that shows nearly no reactivity with zero-valent iron (ZVI) nanoparticles. In this study, an effective dechlorination of DCM has been demonstrated using zero-valent copper (Cu0) nanoparticles and vitamin B12 as catalysts under reduction conditions. Batch experiments revealed that DCM was rapidly degraded in the presence of Cu0 nanoparticles under reduction conditions of sodium borohydride. No degradation of DCM was observed in the presence of Cu0 nanoparticles alone, nor under sodium borohydride reduction conditions alone. A synergistic effect of Cu0 nanoparticles on the reductive degradation of DCM by vitamin B12 (an electron mediator) under reduction conditions of titanium citrate was found. The reaction rate of DCM degradation by the Cu0–B12 system was five times greater than that of using vitamin B12 alone. The DCM degradation rate is a function of the Cu0 nanoparticle and vitamin B12 dose. Increasing the dose increased the observed reaction rate. Product analysis indicated that the degradation of DCM involved hydrodechlorination. Soluble copper ions generated by the dissolution of Cu0 nanoparticles were lower than the World Health Organization drinking water standard, which suggests that the use of Cu0 nanoparticles under reduction conditions may be potentially useful. It is expected that the combination of Cu0 nanoparticles and vitamin B12 (or other electron mediator) system may have the potential for treating recalcitrant chlorinated contaminants that cannot be degraded by ZVI technology. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-16T13:42:16Z (GMT). No. of bitstreams: 1 ntu-102-D97541002-1.pdf: 5887253 bytes, checksum: 9a1419cae2fc457777e48ac9910ad2fe (MD5) Previous issue date: 2013 | en |
| dc.description.tableofcontents | 口試委員會審定書 i
誌謝 ii 中文摘要 iii ABSTRACT iv 目錄 v 圖目錄 viii 表目錄 xi 第一章 前言 1 1.1 研究緣起 1 1.2 研究目的 2 第二章 文獻回顧 3 2.1 地下水汙染與含氯有機汙染物 3 2.1.1 地下水汙染 3 2.1.2 含氯有機物 4 2.1.3 二氯甲烷的特性與來源 10 2.1.4 二氯甲烷之危害與管制 10 2.2 使用透水性反應牆進行受到含氯有機物汙染地下水之整治復育技術 13 2.3 零價鐵金屬與其他零價金屬 16 2.3.1 零價鐵金屬 16 2.3.2 複合金屬 18 2.3.3 奈米金屬（零價金屬奈米顆粒） 24 2.3.4 目前零價鐵金屬技術之缺點與有待改良之處 27 2.3.5 銅金屬的使用 33 2.4 電子媒介體 35 2.4.1 維生素 B12簡介 37 2.4.2 維生素 B12之特性與其反應原理 38 2.4.3 影響維生素 B12催化脫氯反應之因素 41 第三章 研究方法 43 3.1 研究流程 43 3.2 實驗藥品 44 3.3 污染物儲備溶液與維生素 B12儲備溶液配製 44 3.4 污染物與生成物濃度分析 46 3.5 零價金屬與複合金屬的製備 48 3.6 金屬材料特性分析 49 3.7 批次實驗 50 第四章 結果與討論 51 4.1 銅金屬材料特性分析 51 4.2 零價銅金屬於還原條件下降解二氯甲烷 55 4.2.1 零價銅金屬與硼氫化鈉去除二氯甲烷 55 4.2.2 零價銅金屬劑量對二氯甲烷降解之影響 57 4.2.3 硼氫化鈉還原劑劑量對二氯甲烷降解之影響 62 4.2.4 零價銅金屬反應前後之觀察 63 4.2.5 零價銅金屬於硼氫化鈉還原條件下去除二氯甲烷之機制探討 65 4.2.6 系統中銅離子濃度分析 67 4.3 零價銅金屬與維生素 B12催化降解二氯甲烷 68 4.3.1 零價銅金屬與維生素 B12降解二氯甲烷 68 4.3.2 零價銅金屬劑量對零價銅金屬-維生素 B12系統降解二氯甲烷之影響 71 4.3.3 維生素 B12劑量對零價銅金屬-維生素 B12系統降解二氯甲烷之影響 74 4.3.4 零價銅金屬與維生素 B12最佳使用量探討 78 4.3.5 系統 pH對於零價銅金屬與維生素 B12催化降解二氯甲烷 82 4.3.6 UV分析與維生素 B12反應機制探討 84 4.3.7 零價銅金屬反應前後之觀察 93 4.3.8 銅金屬-維生素 B12系統去除二氯甲烷之機制 96 4.4 成本效益評估 98 4.5銅金屬-維生素 B12系統應用於零價鐵金屬 100 4.5.1 配製銅鐵複合金屬配合維生素 B12降解二氯甲烷 100 4.5.2 簡易配製零價鐵與零價銅金屬方法與其材料特性分析 101 4.5.3 零價鐵-銅金屬-B12系統與其去除含氯有機汙染物的能力 105 第五章 結論與建議 108 5.1 結論 108 5.2 建議 110 參考文獻 111 附錄 120 | |
| dc.language.iso | zh-TW | |
| dc.title | 以零價銅金屬及維生素 B12催化二氯甲烷還原降解之研究 | zh_TW |
| dc.title | Catalytic Degradation of Dichloromethane by Zero-valent Copper and Vitamin B12 under Reduction Conditions | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 101-2 | |
| dc.description.degree | 博士 | |
| dc.contributor.oralexamcommittee | 連興隆,張慶源,林郁真,曾迪華 | |
| dc.subject.keyword | 催化脫氯,含氯有機汙染物,鈷胺素,地下水整治復育,奈米顆粒,零價鐵, | zh_TW |
| dc.subject.keyword | Catalytic dechlorination,chlorinated organic contaminants,cobalamin,groundwater remediation,nanoparticles,zero-valent iron (ZVI), | en |
| dc.relation.page | 123 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2013-07-11 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 環境工程學研究所 | zh_TW |
| 顯示於系所單位： | 環境工程學研究所 | |
文件中的檔案：
| 檔案 | 大小 | 格式 | |
|---|---|---|---|
| ntu-102-1.pdf 目前未授權公開取用 | 5.75 MB | Adobe PDF |
系統中的文件，除了特別指名其著作權條款之外，均受到著作權保護，並且保留所有的權利。