Open AccessAdsorption of Fuchsin Basic on Copper in Citric Acid
Author(s) -
J. L. Polo,
E. Cano,
Paz Pinilla,
J. M. Bastidas
Publication year - 2002
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1260/026361702321705294
Subject(s) - chemistry , adsorption , citric acid , gravimetric analysis , copper , sorption isotherm , inorganic chemistry , thermodynamics , nuclear chemistry , organic chemistry , physics
The adsorption of Fuchsin Basic (FB) on copper surfaces in citric acid solutions whose concentrations ranged from 0.001 to 0.1 M was investigated using gravimetric measurements. The concentrations of FB studied ranged from 1 × 10-5 to 1 × 10-1 M with adsorption experiments being conducted at temperatures from 298 K 328 K. The adsorption mechanism is discussed in terms of the applicability of the conventional Frumkin, Bockris-Swinkels and Kastening- Holleck isotherms, amongst others. The best fit was obtained using the Frumkin isotherm model. A thermodynamic/kinetic model of adsorption was also fitted.Peer Reviewe