Crystal Growth Rate of a Fixed K-Alum Crystal in Suspended Solution of MSMPR Crystallizer

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概要

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• The surface structure of the grown crystals and crystal growth rate in suspended supersaturation solution were investigated by using a differential interference microscope with a VTR system and an AFM system. It was found that the surface of the growing crystal had many fine crystals and new growth steps generated from the place of adhered fine crystals. Most of the fine crystals were in the range of 10 μm to 40 μm in size, and their orientations were random. Also the heights of the new growth steps were in the range of a few nm to about 70 nm. The crystal growth rate Gs in suspended solution was faster than the rate Gn in non-suspended solution at the same supersaturation. These rates can be given byGs = 1.1 × 10–1ΔC0.47 (suspended)Gn = 4.8 × 10–2ΔC0.60 (non-suspended)where ΔC (=Cs – C) is supersaturation, Cs and C were the saturated and fixed concentration, respectively. The growth rate Gs increased with decrease of the average crystal size Lav of the suspended crystal in an MSMPR crystallizer. An adequate linear correlation between Gs and Lav was obtained.

• 社団法人 化学工学会の論文
• 2002-11-01

著者

• SHIMIZU Kenji

  Department of Gastroenterology, Kobe Asahi Hospital

• SUZUKI Eiichi

  Department of General Medicine, Niigata University Medical and Dental Hospital

• Ogawa Kohei

  Dep. Of Chemical Engineering Tokyo Inst. Of Technol.

• Shimizu Kenji

  Department Of Chemical Engineering Iwate University

• Guzman Luis

  Department Of Chemistry And Material Engineering Ibaraki College Of Technology

• OGAWA Kaoru

  Center for Regional Collaboration in Research and Education, Iwate University

• OGAWA Kaoru

  Advanced Science and Technology Institute, Iwate Industrial Promotion Center

• Guzman Luis

  Department Of Chemical Engineering Faculty Of Engineering Iwate University

• Ogawa Kaoru

  Advanced Science And Technology Institute Iwate Industrial Promotion Center

• Ogawa K

  Dep. Of Chemical Engineering Tokyo Inst. Of Technol.

• Suzuki Eiichi

  Department Of Chemistry & Bioengineering Iwate University

• Suzuki Eiichi

  Department Of Chemical Engineering Iwate University

• Shimizu Kenji

  Department Of Applied Chemistry And Molecular Science Iwate University

• Ogawa Kaoru

  Center For Regional Collaboration In Research And Education Iwate University

• Suzuki Eiichi

  Department Of Applied Chemistry Tokyo Institute Of Technology

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