Application of the Danckwerts method in a bubble column -: Effects of surfactants on mass transfer coefficient and interfacial area

被引：61

作者：

Vázquez, G

Cancela, MA

Riverol, C

Alvarez, E

Navaza, JM

机构：

[1] Univ Santiago, Dept Chem Engn, E-15706 Santiago, Spain

[2] Univ Vigo, Dept Chem Engn, Vigo 36200, Spain

来源：

CHEMICAL ENGINEERING JOURNAL | 2000年 / 78卷 / 01期

关键词：

Danckwerts method; interfacial area; mass transfer coefficient; surfactants;

D O I：

10.1016/S1385-8947(99)00174-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We determined interfacial areas, A, and individual mass transfer coefficients, k(L), for the absorption of CO2 in a bubble column, with an anionic surfactant in the absorbent liquid. The results of experiments to determine the dependence of k(L) on surface tension of the liquid phase and the superficial velocity of the gas were fitted to within a 10% error by expressions of the form k(L) = K-4 sigma(1.35) u(G)(0.5) where k(4) depends exclusively on the kind of bubbling device. Likewise, the experimental values of specific area, a, were correlated with the column diameter d(c) and the physical properties by means the following equation: ad(c) =K . Re-0.98 . Sc-0.57 . Fr-0.09 . Bo(-0.70) (d(p)/d(c)) (-0.19) that reproduces satisfactorily the experimental values. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：13 / 19

页数：7