Nanofibrous composite air filters

Abstract

Abstract Airborne particle filtration has become a vitally critical issue, since air pollution severely threatens the public health. Due to the inadequacy of traditional filters to capture extremely fine particles, the nanofibrous composite filters have gained great importance. In order to assess the performance of the nanofibrous filters, pressure drop, capture efficiency, quality factor, uniformity of the filter structure, porosity, packing density, and properties of the turbulent flow through the pores are designated as the important parameters. The nanofibrous filter production techniques can be broadly categorized as the electro- and the nonelectrospinning techniques. Those can be fabricated with sandwich and/or composite form by using these techniques. Either of the approaches can be employed depending on the content and structure of the air filter as composite and biocidal air filter.