کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9636494 | 465854 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Initial growth kinetics and structure of colloidal aggregates in a turbulent coagulator
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Aggregation kinetics of colloidal polymeric particles in diluted dispersions was monitored in a stirred tank coagulator using small angle static light scattering. Experimental data were evaluated to obtain two independent moments of the cluster mass distribution along the aggregation process. We applied a population balance modeling approach to early stages of aggregate growth, where breakage is not yet significant compared to aggregation, in order to simultaneously describe both measured moments of the cluster mass distribution. This approach allowed us to uniquely determine both the aggregation rate constant and the effective fractal dimension for aggregates produced during the initial growth regime in the coagulator. We also showed that, similarly as observed in quiescent aggregating systems, the power law region analysis of static light scattering data underestimates the fractal dimension of aggregates early in the course of aggregation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 156, Issues 2â3, 23 August 2005, Pages 226-234
Journal: Powder Technology - Volume 156, Issues 2â3, 23 August 2005, Pages 226-234
نویسندگان
Maurice H. Waldner, Jan Sefcik, Miroslav Soos, Massimo Morbidelli,