The influence of process parameters on struvite continuous crystallization kinetics

被引：51
|
作者：
Matynia, A
Koralewska, J
Wierzbowska, B
Piotrowski, K
机构：
[1] Wroclaw Univ Technol, Dept Chem, PL-50370 Wroclaw, Poland
[2] Silesian Tech Univ, Dept Chem & Proc Engn, Gliwice, Poland
来源：
CHEMICAL ENGINEERING COMMUNICATIONS | 2006年 / 193卷 / 02期
关键词：
magnesium ammonium phosphate hexahydrate (MAP); struvite; precipitation; reaction crystallization; DTM MSMPR crystallizer; SDG models;
D O I：
10.1080/009864490949008
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Experimental data concerning the kinetics of mass crystallization of struvite during the process of magnesium ion removal from water with the use of ammonium dihydrogenphosphate, NH4H2PO4 , addition under alkaline conditions are presented. The tests were carried out in a continuous laboratory DTM MSMPR crystallizer with internal circulation of suspension (T = 298 K). The influence of concentration of Mg2+ ions in the raw material, pH of the process environment, and residence time of suspension on the nucleation and growth rates of struvite crystals was established. Kinetic parameters were evaluated from the crystal size distributions using selected size-dependent growth (SDG) models.
引用
收藏
页码：160 / 176
页数：17
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