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RISS 인기검색어
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- 저자 : Zeng Lingke (검색결과 2 건)
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Shulin Wang,Mei Zhou,Lingke Zeng,Wubin Dai 한양대학교 세라믹연구소 2016 Journal of Ceramic Processing Research Vol.17 No.10
The purpose of this study is to prepare cheaper and higher performance reticulate porous ceramic (RPC) which is quitesuitable for using in organic carrier. The RPC was made by clay through the polymeric foam replication process. The X-raypowder diffraction (XRD) phase analysis indicated that the RPC was mainly comprised mullite when sintered at 1350 oC. Thesurface status of different component RPCs were also observed under scanning electron microscopy (SEM). The bio-filmproperties of RPC with different component and pore size were evaluated by the removal rates of CODCr and NH3-N. Theresults illustrated that the RPC had high effectiveness on the adsorption of micro-organism, the removal rates of CODCr andNH3-N were all reached to ~ 90%. The bio-film effect was associated to porosity, pore size and surface status of the RPC. Moreover, the porosity and pore size played more importantly role than the surface status in the process of bio-film for theRPC carriers. In fact, the RPC carriers with more porosity and suitable pore size achieve better sewage treatment effect.
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Reparation and properties of porous ceramics via re-coating technique
Zhou Mei,Dai Wubin,Zeng Lingke 한양대학교 세라믹연구소 2015 Journal of Ceramic Processing Research Vol.16 No.5
Via a polymeric foam replication and two-step route (heating and re-coating), the reticulate porous ceramics (RPCs) were fabricated. The coating slurries were made up mainly by the ceramic powder (major raw material) and silica sol (binder). The re-coating slurries were obtained by mixing the pore-forming raw material with dilute coating slurries. The effect of the solidcontents on the re-coating rate (Pr) and the porosity (θs) was investigated. The experimental results indicate that the Pr is increasing and the θs is decreasing gradually following the increase of solid-contents. The specific surface area and the pore size distribution of the sintered bodies were measured by intrusive mercury curve. Morphological characteristics of the sintered bodies were investigated by the scanning electron microscopy (SEM). The results illustrated that the pore diameter were all quite spread and the effective specific surface areas for the samples G-4, S-4 and D-4 RPCs are 0.36 m2 /g, 0.52 m2 / g and 1.63 m2 /g, respectively.
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