期刊名称：Chemical Industry and Chemical Engineering Quarterly
印刷版ISSN：1451-9372
出版年度：2020
卷号：26
期号：4
页码：395-399
DOI：10.2298/CICEQ191029017C
出版社：Association of the Chemical Engineers
摘要：The drowning-out crystallization process of sodium molybdate (Na2MoO4) was studied in water-ethanol solutions at room temperature. Sodium molybdate was separated from the solution in well crystalline particles using less water and energy compared with the industrial processes that use evaporative crystallization. Results showed that crystallization of sodium molybdate di-hydrate was achieved after 20 or 40 minutes, in one or two operating stages for super-saturation control with the addition of 25 or 50 vol% ethanol respectively. Crystallization with ethanol could reduce the operating costs in about 32%, respect to conventional evaporative crystallization method and the exhausted ethanol in the aqueous solution could be recovered by distillation and then recycled into the process.
