Title :
Study on Adsorption of Chitosan and interaction with C12EO5 on Silica
Author :
Liu Bingtao ; Fokkink, Remco ; De Keizer, Arie
Author_Institution :
Sch. of Municipal & Environ. Eng., North China Inst. of Water Conservancy & Hydroelectric Power, Zhengzhou, China
Abstract :
Abstract-the article intends to introduce the authors´ experimental study on adsorption behaviour of chitosan solution on silica by reflectometry. Effect of pH on adsorption of Chitosan and interaction with non-ionic surfactant on silica has been studied. The adsorbed amount Γ was 0.80, 0.35 mg·m-2 at pH6.8 and 6.0, respectively. Zeta potential measurements have been measured in the experiment. Exchanges in surface functionality upon adsorbing C12EO5 on chitosan layer are reported. The results are discussed in terms of adsorption kinetics, adsorbed mass plateau values, and reversibility of the layer formation.The mechanism of the adsorption process are likely to be the electrostatic attraction and entropic origin which is typical for adsorption of strongly charged polyelectrolytes onto oppositely charged surfaces.
Keywords :
adsorption; electrokinetic effects; electrostatics; organic compounds; pH; polymer electrolytes; reaction kinetics; reflectometry; silicon compounds; surface charging; surfactants; SiO2; adsorbed mass plateau values; adsorption kinetics; chitosan; electrostatic attraction; entropic origin; layer formation reversibility; nonionic surfactant; oppositely charged surfaces; pH; reflectometry; silica; strongly charged polyelectrolytes; surface functionality exchanges; zeta potential measurements; Absorption; Chemistry; Electrostatic measurements; Kinetic theory; Power engineering and energy; Reflectometry; Silicon compounds; Surface emitting lasers; Surface fitting; Water conservation;
Conference_Titel :
Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4712-1
Electronic_ISBN :
2151-7614
DOI :
10.1109/ICBBE.2010.5517987
