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Gas-Phase Filtration Media Properties: What to Know

By Chris Muller, Purafil Inc. |

There are many physical properties that can impact the ultimate performance of adsorbent media in gas-phase filtration applications Gas-phase filtration media specifications may list numerous physical parameters, such as shape, moisture content, bulk density, impregnation level, size and hardness (crush strength or abrasion), as important determinants of final media performance. The way these physical characteristics can be controlled and optimized during media manufacturing processes can ultimately determine media performance when installed into any number of end-use applications, including standalone pressurization or recirculation units to prevent corrosion in pulp and paper mills or petrochemical plants, or in deep-bed scrubbers in petroleum refineries and wastewater treatment plants to contain a release of toxic chemicals. In order to optimize the packing density, whether the media is to be used in disposable modules or deep-bed scrubbers, spherical media is generally preferred. It is also the most favorable shape with regard to the diffusion of contaminants into pellets. This article discusses the physical parameters of media shape, moisture content and bulk density specifically as they relate to overall media performance,…
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