Chemistry Research Journal
Published August 31, 2020 | Version v1
Journal article Open

Models Sorption of Cyhalofop-Butyl, on Mesopotamic Agricultural Soils

Authors/Creators

  • 1. Laboratorio de Investigaciones en Tecnología Ambiental, Facultad de Ciencias Exactas y Naturales y Agrimensura, IQUIBANEA, Universidad Nacional del Nordeste. Avenida Libertad 5460. Corrientes. Argentina.
  • 2. Facultad de Ciencias Veterinarias, Universidad Nacional del Nordeste. Juan Bautista Cabral 2131. Corrientes. Argentina

Description

Abstract The adsorption equilibrium of butyl (2R)-2-[4-(4-cyano-2-fluorophenoxy) phenoxy]propanoate (CB) was studied in rice-growing soil. The equilibrium sorption data were fitted into Langmuir, Temkin and Dubinin–Radushkevich (DRK) isotherms. Of the four adsorption isotherm, the R2 value of Dubinin–Radushkevich isotherm model was the highest. The maximum monolayer coverage (qm) from Langmuir isotherm model was determined to be 0.079 mg g-1, the separation factor indicating a favorable sorption experiment is 0.38. The heat of sorption process was estimated from Temkin Isotherm model to be 0.0004 J mol-1 and the mean free energy was estimated from DRK isotherm model to be 7.0 KJ mol-1 which vividly proved that the adsorption experiment followed a physical process.

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