Preparation of Spherical Granules of Dolomite Kiln Dust as Gas Adsorbent Choi, Young-Hoon; Huh, Jae-Hoon; Lee, Shin-Haeng; Han, Choon; Ahn, Ji-Whan;
It is highlighted that increasing the adsorbent surface area on volumetric basis is very important in providing an easy access for gas molecules. Fine particles around of soft-burned dolomite kiln dust (SB-DKD) were hydrated to wet slurry samples by ball mill process and then placed in a chamber to use spray dryer method. Spherical granules with particle size distribution of were prepared under the experimental condition with or without addition of a pore-forming agent. The relationship between bead size of the pore-forming agent and size of SB-DKD particles is the most significant factor in preparation of spherical granules with a high porosity. Whereas addition of smaller beads than SB-DKD resulted in almost no change in the surface porosity of spherical granules, addition of larger beads than SB-DKD contributed to obtaining of the particles with both 15 times larger average pore volume and 1 order of magnitude larger porosity. It is considered that spherical granules with improved gas adsorption ability may also be utilized for other atmospheric gas adsorption.
Use of Calcined Oyster Shell Powders as CO2 Adsorbents in Algae-Containing Water, Journal of the Korean Ceramic Society, 2016, 53, 4, 429
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