Ha, Jang-Hoon Bukhari, Syed Zaighum Abbas Lee, Jongman Song, In-Hyuck Park, Chanhyuk 2024-01-20T03:32:24Z 2024-01-20T03:32:24Z 2021-09-05 2016-09 0272-8842 https://pubs.kist.re.kr/handle/201004/123728 Recently, porous ceramic membranes have become a subject of significant interest due to their outstanding thermal and chemical stability. To reduce the high manufacturing costs of these porous ceramic membranes, recent research has focused on the utilization of inexpensive natural materials. However, there have not been any well-established direct comparisons of the membrane properties between typical alumina-based membranes and novel natural material-based membranes. Therefore, we compared alumina-coated alumina support layers (with average pore sizes ranging from 0.10 mu m similar to 0.18 mu m), alumina -coated diatomite-kaolin composite support layers (with an average pore size of 0.12 mu m), and alumina-coated pyrophyllite-diatomite composite support layers (with an average pore size of 0.11 gm) via the dip-coating method and subsequent heat treatment ranging from 1200 degrees C-1400 degrees C for 111. The pure water permeability of the alumina-coated diatomite-kaolin composite support layer and the alumina -coated pyrophyllite-diatomite composite support layer was found to be approximately 2.0 X 10(2) L m(-2)h(-1) bar(-1), which is similar to that of an alumina-coated alumina support layer. Therefore, we suggest that the average pore size of an alumina-coated natural material-based support layer can be effectively controlled while exhibiting acceptable water permeability. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. English ELSEVIER SCI LTD PORE CHARACTERISTICS SINTERED DIATOMITE CERAMIC SUPPORT TEMPERATURE ALPHA-AL2O3 REMOVAL FILTER Preparation processes and characterizations of alumina-coated alumina support layers and alumina-coated natural material-based support layers for microfiltration Article 10.1016/j.ceramint.2016.05.181 1 CERAMICS INTERNATIONAL, v.42, no.12, pp.13796 - 13804 CERAMICS INTERNATIONAL 42 12 13796 13804 scie scopus 000380081900057 2-s2.0-84973920698 Materials Science, Ceramics Materials Science Article PORE CHARACTERISTICS SINTERED DIATOMITE CERAMIC SUPPORT TEMPERATURE ALPHA-AL2O3 REMOVAL FILTER Alumina coating Diatomite-kaolin composite support layer Pyrophyllite-diatomite composite support layer Pore characteristics Microfiltration