李慧梅2006-07-262018-06-282006-07-262018-06-282002-07-31http://ntur.lib.ntu.edu.tw//handle/246246/22087本計畫利用界面活性劑調理濾材，使 濾材成為帶電濾材提升對過濾效能，其中 分別利用陰離子（sodium dodecyl sulfate 與 sodium oleate）與陽離子界面活性劑（dimethyl dioctadecylammonium bromide）使濾 材成為帶正電及負電之濾材。在探討濾材 之過濾效率時，分別針對不同之實驗變因 比較，如氣膠微粒之大小（0.05～0.5µm）、 氣膠微粒之帶電性（正電、負電及中性帶 電）及表面風速（5、10、15 cm/s）。比較 處理前後之濾材之過濾效率，以中性電荷 之氣膠微粒測試，表面處理界面活性劑之 濾材，其過濾效率較未處理之濾材約增加 20~30%，根據比較靜電吸引機制（庫倫力 與介電力），可以發現當表面處理界面活 性劑後，可使濾材表面帶電成為帶電濾材。In the study, the appropriate surfactants were used to make the fibrous filter become charged to increase the filtration efficiency. The anionic surfactants (i.e., sodium dodecyl sulfate and sodium oleate) and cationic surfactant (i.e., dimethyl dioctadecylammo-nium bromide) were used to create the negative and positive charged-medium filter, respectively. The filtration efficiency of those filters was investigated as function of particle size (0.05-0.5 µm) and charge state (positive charged, negative charged, and neutral) for three face velocities (5, 10, and 15 cm/s). By comparison, the filtration efficiency of the treated fibrous filter has been shown to increase 20-30% than no-treated fibrous filter for neutral particles. The electrostatic particle capture mechanisms were in addition to the mechanical capture mechanism of the treated fibrous filter. The results indicated that the fibrous filter treated with surfactant become the charged-medium filter.application/pdf133943 bytesapplication/pdfzh-TW國立臺灣大學環境工程學研究所帶電濾材界面活性劑過濾效率Charged-medium filterfiltration efficiencysurfactantreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/22087/1/902211E002037.pdf