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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/33123完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 鄭福田 | |
| dc.contributor.author | Yu-Ming Chan | en |
| dc.contributor.author | 詹煜銘 | zh_TW |
| dc.date.accessioned | 2021-06-13T04:25:52Z | - |
| dc.date.available | 2007-07-28 | |
| dc.date.copyright | 2006-07-28 | |
| dc.date.issued | 2006 | |
| dc.date.submitted | 2006-07-21 | |
| dc.identifier.citation | 1. Aguiar, M. L. and Coury J.R., 'Cake Formation in Fabric Filtration of Gases,' Ind. Eng. Chem. Res., Vol.35, 1996, pp.3673-3679.
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H., 'Effect of Bi-Modal Aerosol Mass loading on the Pressure Drop for Gas Cleaning Industrial Filters,' Aerosol Science and Technology, Vol.35, 2001, pp.805-814. 20. Mercer, T. T., Aerosol Technology in Hazard Evaluation, Academic Press, New Tork., 1973. 21. Morawska, L., Thomas, S., Bofinger, N. D., Wainwright, D. and Neale, D., 'Comprehensive characterization of aerosols in a subtropical urban atmosphere: particle size distribution and correlation with gaseous pollutants,' Atmospheric Environment, Vol. 32, 1998, pp.2467-2478. 22. Nemmar, A., Hoet, P. H.,. Vanquickenborne, B., Dinsdale, D., Thomeer, M., Hoylaerts, M. F., Vanbilloen, H., Mortelmans, L. and Nemery, B, 'Passage of inhaled particles into the blood circulation in humans,' Circulation, Vol.105, 2002, pp.411-414. 23. Nemmar, A., Hoylaerts M. F., Hoet P. H. M. , Dinsdale, D., Smith, T., Xu, H., Vermylen, J. and Nemery, B., 'Ultrafine particles affect experimental thrombosis in an in vivo hamster model,' American Journal of Respiratory and Critical Care Medicine, Vol. 166, 2002, pp.998-1004. 24. Novick, V. J., Monson, P. R. and Ellison, P. E., 'The Effect of Solid Particle Mass Loading on the Pressure Drop of HEPA Filters,' Journal of Aerosol Science, Vol.23, no.6, 1992, pp.657-665. 25. Oberdörster, G., Gelein, R., Ferin, J., and Weiss, B, 'Association of Particulate Air Pollution and Acute Mortality: Involvement of Ultrafine Particles,' Inhalation Toxicology, Vol.71, 1995, pp. 111 -124. 26. Oberdörster, G., Sharp, Z., Atudorei, V., Elder, A., Gelein, R., Kreyling, W. and Cox, C., 'Translocation of inhaled ultrafine particles to the brain,' Inhalation Toxicology , Vol.16, 2004, pp. 437-445. 27. Pilacinski, W., Ruuskanen, J., Chen, C.C., Pan, M. I., and Willeke, K, 'Size-fractionating Aerosol Generator,' Aerosol Science and Technology, Vol. 13, 1990, pp.450-458. 28. Rulison, A. J. and Flagan, C. R., 'Electrospray Atomization of Electrolytic Solutions,' Journal of Colloid and Interface Science, Vol. 167, 1994, pp.135-145. 29. Shi, J.P. and Harrison, R. M., 'Investigation of Ultrafine Particle Formation during Diesel Exhaust Dilution,' Environment Science & Technology, Vol. 33, 1999, pp. 3730-3736. 30. Shi, J. P., Douglas E. E., Kahn A. A., Harrison, R. M., 'Sources and concentration of nanoparticles (<10 nm diameter) in the urban atmosphere,' Atmospheric Environment, Vol.35, 2001, pp.1193 -1202. 31. Stone, V., Brown, D. M., Watt, N., Wilson, M., Donaldson, K., Ritchie, H., and MacNee, W, 'Ultrafine particle-mediated activation of macrophages: intracellular calcium signalling and oxidative stress,' Inhalation Toxicology, Vol. 12, Suppl 3, 2001, pp. 345-351. 32. Silva, C. R. N., Negrini, V. S., Aguiar, M. L. and Coury, J. R., ' Influence of gas velocity on cake formation and detachment,' Powder Technology, Vol.101, 1999, pp.165-172. 33. The Royal Society & The Royal Academy of Engineering, Nanoscience and nanotechnologies: Opportunities and uncertainties, 2004. 34. Tobias, H. J., Beving, D. E. and Ziemann, P. J., 'Chemical Analysis of Diesel Engine Nanoparticles Using a Nano-DMA/ Thermal Desorption Particle Beam Mass Spectrometer,' Environment Scence & Technology, Vol.35, 2001, pp.2233-2243. 35. VanOsdell, D.W., Donovan, R.P., Furlong, D.A. and Hovis, L.S., 'Fourth Symposium on the Transfer and Utilization of Particulate Control Technology,' EPA-600/9-84-025a, 1984, pp.342-356. 36. Wilson, M. R., Lightbody, J. H., Donaldson, K., Sales, J. and Stone, V. 'Interactions between ultrafine particles and transition metals in vivo and in vitro,' Toxicology and Applied Pharmacology, Vol. 184, 2002, pp. 172-179. 37. 陳威宇,針扎不織布與薄膜濾材負載特性研究,碩士論文,國立台灣大學職業醫學與工業衛生研究所,台北,1999. 38. 黃盛修,低充填密度纖維性濾材過濾與負載特性研究,碩士論文,國立台灣大學職業醫學與工業衛生研究所,台北,1996. | |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/33123 | - |
| dc.description.abstract | 由於人為的燃燒廢氣以及奈米科技的開發應用,人們暴露於奈米微粒的機會大增,近年來流行病學的研究指出奈米微粒對人體可能會造成健康危害,因此奈米微粒的移除為一重要的課題。過濾是有效去除奈米微粒的一種機制,本研究嘗試用薄膜作為過濾奈米微粒之濾材,僅管以往不乏文獻探討過濾之負載特性,但多限於微米及次微米微粒的負載特性,因此本研究主要針對奈米微粒於薄膜過濾下之負載特性進行探討。
本研究選用之奈米微粒產生器為電噴式霧化器,產生之蔗糖微粒粒徑為18 nm、37 nm及50 nm。在表面風速5.3 cm/s、7 cm/s、8.5 cm/s及10 cm/s下,分別量測PVC及PCTE兩種表面材質之薄膜的壓損變化情形。 評估濾材壓損通常利用單位面積的微粒負載量與壓損的關係所建立濾材之負載曲線。負載曲線可分為四個階段,第一階段壓損緩慢上升,主要是小於孔徑之微粒進入濾材的深部,第二階段壓損快速上升,則是因濾材孔隙受到微粒堵塞所致,第三階段為過渡階段,主要是因為負載微粒被已負載的微粒收集或者直接衝擊在濾材上所造成,第四階段表面過濾區因濾餅形成,過濾面積變大,壓損增加之斜率降低,呈現線性上升的趨勢。 依據兩種濾材之負載曲線來推論濾材表面特性不同對於負載特性所造成之影響,PVC 薄膜類似纖維的多層結構不容易使奈米微粒進入濾材的深部,反之PCTE 薄膜的直穿孔結構則容易使微粒進入孔洞內部而被收集,使得PVC 薄膜相對於PCTE 薄膜容易被堵塞。 影響奈米微粒負載之因素部份,當微粒粒徑愈小時,微粒總表面積的增加與單位面積微粒負載量所造成之壓降變化有正相關之趨勢,但微粒總表面積比與P/W值比並非完全一致,可知微粒總表面積對壓降變化雖有影響,但並不完全跟表面積有關。而表面風速愈大時,單位面積微粒負載量下之壓降變化愈大,藉由分析PVC及PCTE薄膜在不同表面風速下與壓損變化之相關性,可知壓損變化大約與表面風速的一次方成正比,此現象與微米負載的結果一致,推測其原因與堆積的微粒被氣流壓密,造成濾餅孔隙率降低有關。 此外,經由變異數分析可知表面風速及微粒粒徑對壓損變化有顯著性的影響,將其迴歸分析可得到兩種濾材之壓損推估公式,其壓損變化約與表面風速之一次方成正比,與微粒粒徑的0.5次方成反比;與微米負載常用之 Kozeny-Carman公式相比,兩者在表面風速的影響有一致的關係,但在粒徑的影響上,微米微粒負載公式卻是與粒徑的2次方成反比。考量到奈米微粒的運動特性,利用Cunningham 校正因子將微米微粒負載公式予以修正,則微米微粒負載公式的P/W值則與微粒粒徑的1次方成反比,仍與本研究所建立之奈米微粒負載公式有所差異。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2021-06-13T04:25:52Z (GMT). No. of bitstreams: 1 ntu-95-R93541201-1.pdf: 3852057 bytes, checksum: d0b48bd34dc32269dbd6de07b273fe91 (MD5) Previous issue date: 2006 | en |
| dc.description.tableofcontents | 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 奈米微粒之來源與健康危害 3 2.1.1 奈米微粒來源 3 2.1.2 奈米微粒之健康危害 5 2.2 過濾理論及特性探討 7 2.2.1 過濾理論 7 2.2.2 過濾品質 8 2.2.3 過濾負載特性 9 2.3 微粒產生方法比較 17 2.3.1 微粒產生方法介紹 17 2.3.2 微粒產生方法之比較 22 2.4薄膜之分類與特性 24 2.4.1 常見之濾材分類 24 2.4.2 薄膜濾材之分類及特性 24 第三章 研究方法 27 3.1 研究規劃 27 3.1.1 研究架構 27 3.1.2 研究流程 28 3.2 研究材料與器材 30 3.2.1 過濾材質 32 3.2.2 奈米微粒產生儀器 33 3.2.3 微粒負載測試設備 34 3.2.4 微粒資料監測設備 35 3.3 因子選擇與控制 35 3.3.1 負載微粒粒徑的選擇 35 3.3.2 表面風速的選定 36 3.4 壓損推估模式之建立方法 37 3.4.1 資料處理 37 3.4.2 模式建立方法 38 第四章 結果與討論 39 4.1 奈米微粒之產生特性 39 4.1.1 控制條件測試結果 39 4.1.2 奈米微粒產生穩定度之測試結果 43 4.1.3 奈米微粒產出濃度之特性 45 4.2 薄膜濾材之負載特性探討 46 4.2.1衛星微粒對負載之貢獻 47 4.2.1 濾材表面特性對於負載曲線的影響 49 4.2.2 微粒粒徑對於負載曲線的影響 55 4.2.3 表面風速對於負載曲線的影響 66 4.3 壓損推估模式之建立 72 第五章 結論與建議 79 5.1 結論 79 5.2 建議 80 參考文獻 81 | |
| dc.language.iso | zh-TW | |
| dc.subject | 奈米微粒 | zh_TW |
| dc.subject | 薄膜過濾 | zh_TW |
| dc.subject | 負載特性 | zh_TW |
| dc.subject | nanoparticle | en |
| dc.subject | loading characteristic | en |
| dc.subject | membrane filtration | en |
| dc.title | 奈米微粒於薄膜過濾下之負載特性研究 | zh_TW |
| dc.title | The loading characteristics of membrane filters by nanoparticles | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 94-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 陳志傑,張艮輝,林文印,劉遵賢 | |
| dc.subject.keyword | 奈米微粒,薄膜過濾,負載特性, | zh_TW |
| dc.subject.keyword | nanoparticle,membrane filtration,loading characteristic, | en |
| dc.relation.page | 85 | |
| dc.rights.note | 有償授權 | |
| dc.date.accepted | 2006-07-22 | |
| 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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