AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
Abstract View
A Study on the Filtration Characteristics of Charged Porous Fiber Filters
CHIH-TE WANG, Tsung-Ming Tu, Shao-Tai Lee, Yu-Hao Tseng, Bi-Ling Huang, Jia-Xi Shi, Wen-Yinn Lin, Institute of Environmental Engineering and Management, NTUT
Abstract Number: 113 Working Group: Control and Mitigation Technology
Abstract This study evaluated the charging characteristics of Electrospinning fibers. Nanofibers are used suitable in filtration because of high filtration efficiency and low pressure drop. In addition, nanofibers are also provided with exceptional properties which included highly specific area, high aspect ratio, and pore diameter. They are broadly used in a variety of applications, such as filtration for air or water, tissue engineering scaffolds, protective clothing and biomedical application, etc. Electrospinning fibers are nanofibers with electrostatic attraction on their surface. The surface of electret filters has electrostatic attraction, as increasing the electricity, particle penetration will gradually decrease. Besides, some researches indicated porous fiber having higher surface area. However, no research on the filtration characteristics of charged porous fiber has been found. Therefore, this study discusses the filtration characteristics of charged porous fiber.
An electrospinning system was set up in this study and nanofibers can be produced by electrospinning technology. The material of filters was PMMA. In addition, the surface voltage and penetration efficiency were investigated in this research.
The results of this study showed that the porous fiber had better efficiency improvement. The surface voltage of the porous fiber filter with a diameter of about 500nm was more than that of the smooth fiber surface voltage -0.088kV. Moreover, the average penetration efficiency is 12.42% lower than that of smooth fiber. The experimental results indicated that the surface voltage, penetration and filter quality of porous fiber were more prominent than smooth fiber after charging.