Desulfurization Performance of Sorbent Derived from Waste Concrete
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概要
- 論文の詳細を見る
Desulfurization performances of a sorbent derived from waste concrete were examined with thermal gravimetric analysis under the temperature range from 303 K to 1173 K. The sorbent is fine particles of which the mean diameter is distributed 10-200 μm, which was generated as a byproduct in a recycling process of aggregates from waste concrete. The sorbent is mainly composed of hydrated cement component, i.e., calcium silicate hydrate (C-S-H) and calcium hydroxide (Ca(OH)2). The sorbent showed SO2 removal activity over the temperature range studied. The desulfurization rate was lower under lower temperature range up to 773 K, where the desulfurization rate gradually decreased with increasing temperature. The desulfurization activity under the lower temperatures can be attributed to the direct reaction of SO2 with C-S-H and Ca(OH)2. For the higher temperature range, the desulfurization rate was much higher, which is almost half of those for pure calcium carbonate, a conventional sorbent for dry desulfurization.
著者
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Yamasaki Akihiro
Department of Materials and Life Science, Seikei University
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Yanagisawa Yukio
Department Of Environment Systems Graduate School Of Frontier Sciences The University Of Tokyo
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Iizuka Atsushi
Research Center For Sustainable Science And Engineering Institute Of Multidisciplinary Research For
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Yamasaki Akihiro
Department Of Materials And Life Science Faculty Of Science And Technology Seikei University
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Iizuka Atsushi
Research Center for Sustainable Science and Engineering, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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