Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
15th Fall Meeting of The Ceramic Society of Japan
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Host: The Ceramic Society of Japan

Recycling of waste glass by leaching of alkali and heavy metal
Tomoko Akai, Danping Chen, Hirotsugu Masui, Tetsuo Yazawa
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Keywords: Silica, Waste Glass, alkali extraction, metal extraction, acid leach
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Pages 24

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Abstract
For the purpose of recycling waste colored glass, we attempt to extract alkali and metals from the glass. The soda-lime-silicate glasses are leached in nitric acid after crushing to fine powder or remelting with H3BO3. It is found that alkali and metal ions are successfully leached by those treatments. Chemical composition of the glasses thus obtained is also analyzed.
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© The Ceramic Society of Japan 2002
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