The combined effects of supersaturation and Ba2+ on the batch cooling crystallization of potassium dihydrogen phosphate

✍ Scribed by Guozong Zheng; Jingkui Liang; Zhengdong Li; Genbo Su; Xinxin Zhuang

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 244 KB
• Volume: 43
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200711065

✦ Synopsis

Abstract

The combined effects of supersaturation and Ba^2+^ on potassium dihydrogen phosphate (KDP) were investigated in batch cooling suspension crystallization. Growth size, morphology, and impurity Ba^2+^ adsorbed in the KDP crystals were measured with changing Ba^2+^ concentration and supersaturation. Significant changes in shapes and volume of the grown crystals have been observed. The results further confirmed that the size and shape of crystals were greatly determined by supersaturation. Ba^2+^ ions significantly modified the growth habit of KDP crystals. The concentration of Ba^2+^ ions adsorbed in the crystals increases with the increasing Ba^2+^ ions in the solutions and supersaturation. The foggy phenomena caused by the addition of Ba to the KDP solution were also described. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)