Fabrication of Humidity Control Ceramics from Drinking-Water Treatment Sludge and Onggi Soil Lee, Min-Jin; Lee, Hyeon-Jun; Kim, Kyungsun; Hwang, Hae-Jin;
In this study, humidity control ceramics with good adsorption/desorption capabilities and high strength were fabricated from drinking-water treatment sludge (DWTS) and Onggi soil. The DWTS powder heat-treated at and Onggi soil were mixed at weight ratios of 40:60, 50:50, 60:40, and 70:30 and fired at . With increasing DWTS content, density and flexural strength increased. For the sample with a DWTS:Onggi soil weight ratio of 70:30, porosity and specific surface area decreased with increasing firing temperature, attributed to densification and grain growth at high firing temperatures. From the results obtained, a firing temperature of is the optimum condition for fabricating humidity control ceramics with good adsorption/desorption capabilities and strength. The maximum adsorbed amount for the sample fired at was .
Humidity control ceramics;Adsorption/Desorption capability;Drinking-water treatment sludge (DWTS);Onggi soil;Eco-friendly;
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