Comparative Filtration Performance of Composite Air Filter Materials Synthesized Using Different Impregnated Porous Media

Abstract

Indoor environment quality is currently a hot research topic. In this study, composite air filter materials were synthesized using different impregnated porous medium materials, and their filtration performance and structural parameters were analyzed. The results showed that composite filter materials’ structures changed at the fibers’ surfaces when synthesized using different porous medium material layers. The filtration efficiency of composite filter materials synthesized using different porous media reached a maximum 0.8 m/s filtration velocity, and PM10, PM2.5, and PM1.0 increased by 1.67~26.07, 1.19~26.96, and 1.10~21.98%, respectively. The filtration efficiencies of reduced graphene oxide composite for PM10, PM2.5, and PM1.0 were 21.26, 20.22, and 18.50% higher, respectively, than those of carbon black composite. In addition, the filtration efficiency of the composite material synthesized by reducing graphene oxide improved for 0 to 1.0 μm particulates and was more effective by comparison. Filtration efficiency and resistance were comprehensively considered during air filter use to provide useful values for the selection and preparation of composite filter materials in the future.

The Performance Testing and Analysis of Common New Filter Materials: A Case of Four Filter Materials

“…Through the microstructure, it could also be seen that the resistance could be reduced by changing the fibers’ own structure, without affecting the filtration efficiency. According to the relevant literature [ 19 ], fibers can be composed of porous media with a large specific surface area. When passing through dust sources, this can not only efficiently capture pollutants, but also provide multi-channel airflow, thereby reducing the resistance without affecting the filtration efficiency.…”

“…Therefore, the preparation and optimization of fiber materials have always been among the main directions in research on high-performance filtration materials [ 17 ]. Domestic and foreign scholars have achieved certain results through extensive related research [ 18 , 19 , 20 , 21 ]. The focus of such research is on improving the efficiency of filter materials [ 18 ], as well as the development of new materials [ 19 , 20 , 21 ], and so on.…”

“…Domestic and foreign scholars have achieved certain results through extensive related research [ 18 , 19 , 20 , 21 ]. The focus of such research is on improving the efficiency of filter materials [ 18 ], as well as the development of new materials [ 19 , 20 , 21 ], and so on. However, due to the changing environment and increasing demand for the removal of small- and medium-sized particles from the air, research on new materials has always been the mainstream direction of current research.…”

Differences in Performance and Conductivity Persistence of New Reduced Graphene Oxide Air Filter Materials before and after Eliminating Static Electricity

“…However, due to the relatively long research cycle, complex preparation processes, high costs, high difficulty in operation, and unstable performance of new air filter materials [14,15], it is difficult to promote new air filter materials on a large scale in a short period of time. In particular, in response to the demand for more frequent use of filters in the post-pandemic era [16], the performance requirements for air filters will become higher compared to the past.…”

“…For most bacteria and viral microorganisms, the size is on the micron or submicron scale. For example, relevant studies have shown that viruses are about 100 nm in size [16]. These small particles in the air could be efficiently captured by the filter fibers, which are very small and dense.…”