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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 駱尚廉(Shang-Lien Lo) | |
dc.contributor.author | Chia-Chuan Chang | en |
dc.contributor.author | 張家銓 | zh_TW |
dc.date.accessioned | 2021-06-13T15:36:52Z | - |
dc.date.available | 2008-07-14 | |
dc.date.copyright | 2008-07-14 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-10 | |
dc.identifier.citation | Achenbach, L. A., Michaelidou, U., Bruce, R. A., Fryman, J. and Coates, J. D., 'Dechloromonas agitata gen. Nov., sp nov and dechlorosoma suillum gen. Nov., sp nov., two novel environmentally dominant (per)chlorate-reducing bacteria and their phylogenetic position', International Journal of Systematic and Evolutionary Microbiology 51, 527 (2001).
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37650 | - |
dc.description.abstract | 過氯酸鹽 (ClO4-) 已經被美國環保署認定為新興污染物之一,本研究使用零價鎂 (Mg0) 及銅鎂 (Cu/Mg) 雙金屬於開放系統中去除水中過氯酸鹽,實驗變數包括銅之來源、負載比例、加藥量、初始濃度、反應溫度等,探討各條件對過氯酸鹽去除率之影響,並以中間產物氯酸鹽 (ClO3-) 及亞氯酸鹽 (ClO2-) 為反應物,探討過氯酸鹽與銅鎂雙金屬之反應途徑。批覆銅之來源有硝酸銅 (Cu(NO3)2)、氯化銅 (CuCl2) 及硫酸銅 (CuSO4) 三種,實驗結果顯示,以硝酸銅為批覆銅之來源時,20% Cu/Mg雙金屬與過氯酸鹽反應之過氯酸鹽去除率 (76%) 為最佳,而最適之加藥量為20 g/L,過氯酸鹽濃度於反應時間1分鐘內,瞬間降低,但中間產物氯酸鹽及亞氯酸鹽均未被偵測到,最終產物氯離子 (Cl-) 濃度亦沒有隨之增加,等溫吸附實驗之結果顯示,Langmuir及Freundlich模式皆可適用,因此,反應初期主要之去除機制為吸附作用。 | zh_TW |
dc.description.abstract | Perchlorate (ClO4-) has been identified as an emerging contaminant by U.S. EPA. In this study, zero-valent magnesium and Cu/Mg bimetallic particles were used to remove perchlorate in open system. Source of Cu, loading ratio, dosage, initial concentration, and temperature were considered variables during the experiments to investigate the effects of the different conditions on perchlorate removal rate. In addition, intermediate, chlorate (ClO3-) and chlorite (ClO2-), were as reactants to investigate the pathway of the reactions of perchlorate with Cu/Mg bimetallic particles. The loading source of Cu were from Cu(NO3)2 , CuCl2, and CuSO4. The experiments suggested that the highest removal rate, 76%, was achieved by 20% Cu/Mg bimetallic particles loaded from Cu(NO3)2 and 20 g/L was the optimal dosage. However, the initial rapid drop of perchlorate within 1 minute was not matched by an immediate increase in chloride (Cl-) concentration. Intermediate, chlorate and chlorate, were also undetected. The adsorption experiment data have good fit for both Langmuir and Freundlich adsorption isotherm. Therefore, adsorption were considered the primary removal mechanism in the beginning of the reactions. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T15:36:52Z (GMT). No. of bitstreams: 1 ntu-97-R95541108-1.pdf: 8837620 bytes, checksum: ee4f5681c2fc40ce6bd560f798abedb9 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 誌謝…………………………………………………………………………………..…………………………..…….……i
摘要……………………………….………………………………………………………………….………….………....ii Abstract…………………………………………………………………………………………………………………….iii 目錄……………………………….………………………………………………………………….………….………...iv 圖目錄……….…………………………………………………………………………………………………..……...viii 表目錄…………………………………………………………………………………………xi 第一章 緒論 1 1-1 研究緣起 1 1-2 研究目的與內容 2 第二章 文獻回顧 4 2-1 過氯酸鹽 4 2-1-1 過氯酸鹽之來源 4 2-1-2 過氯酸鹽對健康之危害 5 2-1-3 過氯酸鹽之物理化學性質 8 2-1-4 過氯酸鹽現行之處理技術 11 2-2 零價金屬處理技術之探討 14 2-2-1 零價鐵還原過氯酸鹽 14 2-2-2 零價鎂還原硝酸鹽 16 2-2-3 零價鋁還原硝酸鹽 17 2-2-4 零價鋅還原硝酸鹽 17 2-3 雙金屬觸媒處理技術之探討 18 2-3-1 鈀鎂雙金屬對多氯聯苯之脫氯作用 18 2-3-2 銅鐵雙金屬還原硝酸鹽 19 2-4 等溫吸附模式 20 2-4-1 Langmuir等溫吸附方程式 20 2-4-2 Freundlich等溫吸附方程式 21 第三章 實驗材料及方法 23 3-1 實驗流程 23 3-2 反應材料之製備 25 3-2-1 零價金屬 25 3-2-2 雙金屬顆粒 25 3-3 開放系統下之反應動力實驗 26 3-3-1 銅之來源與負載比例之動力實驗 27 3-3-2 加藥量之動力實驗 27 3-3-3 初始濃度之動力實驗 27 3-3-4 反應溫度之動力實驗 28 3-3-5 中間產物之動力實驗 28 3-4吸附實驗 28 3-4-1 氫氧化物吸附實驗 28 3-4-2 等溫吸附實驗 29 3-5 過氯酸鹽及其還原產物之濃度分析 29 3-6 反應材料之表面分析 30 第四章 結果與討論 32 4-1 雙金屬材料之選擇 32 4-1-1 基本金屬之選擇 32 4-1-2 第二金屬之選擇 34 4-2 反應材料之表面分析 36 4-2-1 Mg粉 36 4-2-2 Cu/Mg 雙金屬顆粒 43 4-3 酸洗之影響 56 4-4 銅鎂雙金屬之動力實驗 59 4-4-1 銅之來源與負載比例之影響 59 4-4-2 加藥量之影響 64 4-4-3 初始濃度之影響 65 4-4-4 反應溫度之影響 66 4-4-5 中間產物之去除與質量平衡 67 4-5 氫氧化物吸附之影響 70 4-6 等溫吸附實驗之結果 72 第五章 結論與建議 75 5-1 結論 75 5-2 建議 77 第六章 參考文獻 78 附錄 實驗數據 84 | |
dc.language.iso | zh-TW | |
dc.title | 零價鎂及銅鎂雙金屬去除水中過氯酸鹽之研究 | zh_TW |
dc.title | Removal of Perchlorate by Zero-valent Magnesium and Cu/Mg Bimetallic Particles | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 劉雅瑄(Ya-Hsuan Liou),林郁真(Yu-Chen Lin) | |
dc.subject.keyword | 過氯酸鹽,零價鎂,銅鎂雙金屬,開放系統,等溫吸附, | zh_TW |
dc.subject.keyword | adsorption isotherm,Cu/Mg bimetallic particles,open system,perchlorate,zero-valent magnesium, | en |
dc.relation.page | 91 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-10 | |
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 |
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