| 초록 |
Nano-sized metal oxide catalyst was coated on the recycled cylindrical-type porous filter media by spray coating process. Silica based porous filter media were recovered by a simple acid leaching the catalytic metal components from the used gas filter media (ExPolTM). The residual silicate matrix obtained after acid treatment was coated again with colloidal copper-manganese oxide particles, which resulted in catalyst coated porous cylindrical-type gas filter media. The chemical compositions, porous character, and gas removal performance of the re-produced filter media were systematically compared with those of the original filter media. The newly developed recycle process enables us to make cost-effective ceramic gas filter media and provides a environmental-benign and resource-recycling production route. |
