Open AccessCompetitive Adsorption and Desorption of 2,4-D and PCOC in a Volcanic Soil
Author(s) -
Sridhar Susarla,
G. V. Bhaskar,
S. M. Rao Bhamidimarri
Publication year - 1991
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 - 10.1177/026361749100800402
Subject(s) - desorption , adsorption , chemistry , freundlich equation , chromatography , competition (biology) , analytical chemistry (journal) , organic chemistry , ecology , biology
The competitive adsorption and desorption of 2,4-D and PCOC, two of the commonly used phenoxy herbicide chemicals, in a volcanic soil has been examined. A Freundlich-type isotherm incorporating competition between the solutes was used to analyze the adsorption and desorption data. The competition coefficients for 2,4-D and PCOC were linearly dependent on the initial concentration for adsorption and on the amount adsorbed for desorption. The adsorption capacities of 2,4-D and PCOC in a bicomponent system were reduced by 10% and 8%, respectively, in comparison to their single-component values. The desorption studies showed that both 2,4-D and PCOC were difficult to desorb in a bicomponent system.