Dynamic Surface Tension and Adsorption Kinetics of Sodium Lignosulfonate Aqueous Solutions |
| |
| Authors: | Rong Li Seyed Foad Aghamiri Dongjie Yang P Chen |
| |
| Institution: | 1. School of Chemistry and Chemical Engineering, South China University of Technology, State Key Lab of Pulp and Paper Engineering , Guangzhou , Guangdong , P. R. China;2. Department of Chemical Engineering , University of Waterloo , Waterloo , Ontario , Canada;3. Department of Chemical Engineering , University of Waterloo , Waterloo , Ontario , Canada;4. Department of Chemical Engineering , Faculty of Engineering, University of Isfahan , Isfahan , Iran;5. School of Chemistry and Chemical Engineering, South China University of Technology, State Key Lab of Pulp and Paper Engineering , Guangzhou , Guangdong , P. R. China;6. Department of Chemical Engineering , University of Waterloo , Waterloo , Ontario , Canada |
| |
| Abstract: | In the article, the dynamic surface tension of sodium lignosulfonate (SL) aqueous solutions are investigated using an axisymmetric drop shape analysis-profile method. The data are analyzed by the Langmuir, Frumkin, modified Frumkin, and modified Flory-Huggins equations. The results indicate that the Langmuir model's results with two adjustable parameters are comparable to that of other models with three or four adjustable parameters. Based on the simplicity of simulation, the Langmuir adsorption equation is used to correlate the dynamic adsorption processing. The aggregation between SL molecules and the variation of adsorption configuration are proposed to interpret the results of dynamic surface tension.  |
| |
| Keywords: | Aggregation Langmuir model sodium lignosulfonate surface tension |
|
|
