The effect of surfactants on oxygen mass-transfer through the air-water interface

被引：5
|
作者：
Mölder, E [1 ]
Tenno, T [1 ]
Mashirin, A [1 ]
机构：
[1] Univ Tartu, Inst Phys Chem, EE-51014 Tartu, Estonia
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2002年
关键词：
air-water interface; oxygen mass-transfer; surfactants;
D O I：
10.1065/espr2002.04.115.10
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The aim of the current study was to investigate the oxygen transfer rate through the water-air interface in the presence of different concentrations of various surfactants. The surfactants used in the current study were methanol, ethanol, 1-propanol and 1-butanol. The measurements were performed with an apparatus based on the electrochemical oxygen sensor. The results obtained showed that the impediment to oxygen mass-transfer through the water-air interface depends on the molecular structure and concentration of the surfactant used. A simple mathematical model was proposed, which allowed us to calculate the characteristic constants of surfactants-K' and delta k starting from the experimental results. K' is the reciprocal of the equilibrium constant of adsorption process and delta k characterizes the influence of the surfactant to oxygen mass-transfer through the air-water interface.
引用
收藏
页码：39 / 42
页数：4
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