Acoustic Effect on Induction of Cerium Carbonate in Reaction Crystallization
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- He Xin-Kuai
- Department of Chemical Engineering, ILRI, Kyung Hee University
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- Kim Rayoung
- Department of Chemical Engineering, ILRI, Kyung Hee University
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- Shin Dongmin
- Department of Chemical Engineering, ILRI, Kyung Hee University
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- Kim Woo-Sik
- Department of Chemical Engineering, ILRI, Kyung Hee University
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The influence of ultrasonication and agitation on the induction of nucleation in the reaction crystallization of cerium carbonate has been investigated in a semi-batch crystallizer. When the cerium chloride and sodium carbonate reactants are constantly injected, the induction time depends significantly on ultrasonication and agitation. Due to the acoustic cavitation of ultrasonication promoting micromixing of the reactants, the induction time of cerium carbonate is markedly reduced. Simultaneously, the acoustic cavitation appears to reduce the energy barrier of nucleation, inducing nucleation at a lower supersaturation level than with the turbulent fluid motion of agitation. However, the acoustic stream of ultrasonication does not promote the induction of nucleation. Meanwhile, agitation also facilitates the induction of nucleation due to turbulent mixing of the reactants. The micromixing resulting from agitation meant the supersaturation in the solution increases rapidly when increasing the agitation speed, thereby reducing the induction time. The influence of ultrasonication and agitation on the induction of nucleation has also been compared in terms of the energy dissipation. With the same energy dissipation, ultrasonication is much more effective than agitation for induction, possibly due to its unique feature of acoustic cavitation.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 45 (4), 272-278, 2012
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679545562752
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- NII論文ID
- 130001307363
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- NII書誌ID
- AA00709658
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 023829686
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可