Gas phase filtration has gained much attention due to increased pollution level, growing public awareness and issued guidelines by regulatory bodies on global air quality¹. In the cabin air segment, OEMs and filter element manufacturers demand higher removal efficiency of VOCs and harmful toxic gases, in addition to high particulate filtration targets, dust holding capacity and lower pressure drop. To address these challenges, we will describe an innovative media, that combines high-quality adsorbent layer and next-generation particulate filter layers for improved performance. This data will be supported by computational modeling.

In this study, we illustrated the media developing workflow through a case study to meet element performance and VOC removal requirements. An alternative carbon composition was engineered based on the model. Its performance was further confirmed via in-house flat sheet media testing. Finally, the optimized solution was validated through complete filter element testing.

The semi-analytical model developed in this work has demonstrated the capability to predict the adsorption performance of flat sheet carbon media and pleated filter elements for multiple application environments involving different flow rates, various upstream concentration levels, and a wide range of carbon add-on in the media.