Effect of grinding and heating on Ni2+ uptake properties of waste paper sludge |
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| Authors: | Kumar Jha Vinay Kameshima Yoshikazu Nakajima Akira Okada Kiyoshi MacKenzie Kenneth J D |
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| Institution: | Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology, O-okayama, Meguro, Tokyo, Japan. |
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| Abstract: | Uptake properties of Ni2+ were examined for unmilled and milled paper sludge calcined at various temperatures to develop a new usage of waste paper sludge. Since paper sludge mainly consists of cellulose (C6H(10)O5]n) fibers, calcite (CaCO3), kaolinite (Al2Si2O5(OH)4) and talc (Mg3Si(4)O(10)(OH)2), amorphous and crystalline CaO(MgO)-Al(2)O(3)-SiO(2) compounds are formed by calcining paper sludge. Wet and dry milling treatments were performed to accelerate solid-state reaction to form the above mentioned target compounds. The crystalline phases originally present decompose at increasing calcining temperature (up to 800 degrees C) in the order cellulose
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| Keywords: | Waste paper sludge Mechanochemical treatment Ni2+ uptake Amorphous CaO– Al2O3– SiO2 |
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