Removal of Monodisperse Liquid Aerosols by Using the Polysulfone Membrane Filters

doi:10.1016/j.seppur.2006.08.012

Chia Nan University of Pharmacy & Science Institutional Repository > 環境永續暨休閒學院 > 職業安全衛生系(含防災所) > 期刊論文 > Item 310902800/22249

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標題:	Removal of Monodisperse Liquid Aerosols by Using the Polysulfone Membrane Filters
作者:	Hsiao-Lin Huang Da-Ming Wang Se-Tsung Kao Shinhao Yang Yi-Chin Huang
貢獻者:	職業安全衛生系
關鍵字:	Aerosol penetration Polysulfone membrane filters Face velocity Relative humidity Quality factor
日期:	2007-03
上傳時間:	2010-01-15 11:25:04 (UTC+8)
摘要:	Polymer membrane filters are extensively used for sampling and collecting aerosols. This work explores the aerosol penetration of the polysulfone (PSF) membrane filters using monodisperse liquid aerosols. Three concentration-casting polysulfone solutions (15, 20 and 25%) were utilized to yield PSF membrane filters with variously sized pores. Additionally, the effects of various factors, including the species of the aerosol (dioctyl phthalate and potassium chloride), the size of the aerosol (0.03–0.5 μm), the face velocity (5, 10 and 20 cm/s) and the relative humidity (30, 50 and 70%), on the aerosol penetrations, were estimated. Experimental results indicate that the penetrations of DOP liquid aerosols through 15, 20 and 25% PSF membrane filters with “Boltzmann charge equilibrium” are 3.1–9.1, 1.5–3.7 and 0.6–1.4%, respectively. The most penetrating size of the PSF membrane filters was around 0.05 μm. Our results further demonstrate that penetration through PSF membrane filters fell as the concentration-casting solution increased, because the pore size of the PSF membrane filters declines as the concentration of the casting solution rises. Moreover, the penetration of solid aerosols through PSF membrane filters exceeds that of liquid aerosols. Penetration through the PSF membrane filters increases obviously with the flow rate when aerosol smaller than 0.21 μm. When aerosol larger than 0.3 μm, the variations of penetration through the PSF membrane filters become smaller at different flow rates. The relative humidity does not influence the performance of the PSF membrane filters. Results of this study demonstrate that the 25% PSF membrane filter has a larger qF than the 15 and 20% PSF membrane filters.
關聯:	Separation and Purification Technology 54(1)： p.96-103
顯示於類別:	[職業安全衛生系(含防災所)] 期刊論文

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