Pinnacle Agricultural Research & Management

(ISSN: 2360-9451)

March 2015, Vol. 3 (3).

© Author(s) 2015. This work is distributed under the Creative Commons Attribution 3.0 License.

Research Article

 

Model Isothermal Of The Equilibrium Of The Herbicide 2,4-Dichlorophenoxyacetic Acid In Watery Phase On Soil With High Contained Organic Matter

A.N. Pila1*, M.J. Jorge2, J.M. Romero3, N. L. Jorge4* & E. A. Castro5

1,2,3,4LabInTam,
Facultad de Cs. Exactas y Naturales y Agrimensura,
Universidad Nacional del Nordeste,
Av. Libertad 5470 - (3400) Corrientes-Argentina.

5INIFTA,
Theoretical Chemistry Division,
Suc. 4, C.C. 16, La Plata 1900,
Buenos Aires, Argentina.





Accepted 13 March, 2015; Available Online 17 March, 2015.

Abstract:

Adsorption isotherm of 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide on soil high in organic matter (used in rice cultivation) from determined batch test. The effects of contact time, initial concentration were investigated. The adsorption equilibrium data were processed in accordance with three most widely used adsorption isoterms: Freundlich, Langmuir and Temkin isoterm models. The equilibrium data were best represented by Freundlich isoterm model, showing higher Kd values reveal that adsorption is strong. These results are related to the different content and nature of soil organic matter.


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