Göransson A, Trägårdh C
Food Engineering, Center for Chemistry and Chemical Engineering, Lund Institute of Technology at Lund University, Lund, SE-221 00, Sweden
J Colloid Interface Sci. 2000 Nov 15;231(2):228-237. doi: 10.1006/jcis.2000.7139.
The deposition of polystyrene latex particles of 0.46 µm diameter was studied in situ using a wall-jet cell in combination with total internal reflection microscopy. The particles were deposited onto an indium tin oxide surface in a laminar flow field for up to 13 h. The initial particle flux was found to be mass-transfer-controlled. It was shown that one period of the time-dependent deposition rate period was of first-order nature. The effective particle transfer coefficient during this period appeared to be correlated inversely to the wall shear rate. With the help of three characteristic empirical constants, one of them being a mass transfer coefficient, the overall deposition process was described by a model equation. The concentration dependency was elucidated using a Langmuir-type pseudoisotherm. Copyright 2000 Academic Press.
使用壁面射流池结合全内反射显微镜原位研究了直径为0.46 µm的聚苯乙烯乳胶颗粒的沉积情况。颗粒在层流场中沉积到氧化铟锡表面上长达13小时。发现初始颗粒通量受传质控制。结果表明，随时间变化的沉积速率周期的一个阶段具有一级性质。在此期间，有效颗粒转移系数似乎与壁面剪切速率成反比。借助三个特征经验常数（其中一个是传质系数），用一个模型方程描述了整个沉积过程。使用朗缪尔型假等温线阐明了浓度依赖性。版权所有2000年学术出版社。
