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Adsorption of dyes on chitin. I. Equilibrium studies
Author(s) -
McKay G.,
Blair H. S.,
Gardner J. R.
Publication year - 1982
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1982.070270827
Subject(s) - freundlich equation , mordant , adsorption , chitin , langmuir , equilibrium constant , chemistry , thermodynamics , materials science , nuclear chemistry , chitosan , organic chemistry , physics , dyeing
Equilibrium isotherms have been studied for the adsorption of four dyestuffs, namely, Acid Blue 25, Acid Blue 158, Mordant Yellow 5, and Direct Red 84, onto chitin. Langmuir and Freundlich constants have been determined and the effects of chitin particle size and solution temperature have been investigated. Theoretical isotherms have been compared with experimental data and good agreement was obtained using a composite isotherm of the general form: Y e = iC e /(1 + jC e m ), where i , j , and m are constants.