Preparation of granular ceramic filter and prediction of its collection efficiency

Hyun Jin Choi, Jeong Uk Kim, Sung Hyun Kim, Myong Hwa Lee

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The silicon carbide (SiC) ceramic filter is the most favorable component to remove particulate matter from hot flue gas due to its high filtration efficiency and high thermal durability. The effect of SiC powder size on the physical properties and filtration performance to prepare high-performance granular ceramic filter media was investigated in this study. Disk-type filter media were prepared by mixing ceramic components followed by physical compression and sintering. The porosity and average pore diameter in the filter media increased with increasing powder size. However, the mechanical strength decreased with increasing powder size, while it increased with increasing physical compressive force. The filter performance factor, qFM was introduced to evaluate the ceramic filter properties, and the SiC50 filter was the best of the ceramic filters prepared in this study. We also found that diffusion was a dominant collection mechanism for particles smaller than 0.7 m, and direct interception and inertia were dominant collection mechanisms for particles larger than 0.7 m in the SiC50 filter based on a single collector efficiency model. In addition, the predicted collection efficiencies showed reasonably good agreement with the experimental ones.

Original languageEnglish
Pages (from-to)1070-1079
Number of pages10
JournalAerosol Science and Technology
Issue number10
Publication statusPublished - 2014 Oct

ASJC Scopus subject areas

  • Environmental Chemistry
  • Materials Science(all)
  • Pollution


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