Temperature dependence of herbicide adsorption from aqueous solutions on activated carbon fiber and cloth

M Angeles Fontecha-Camara; M Victoria López-Ramón; Miguel A Alvarez-Merino; Carlos Moreno-Castilla

doi:10.1021/la061666v

Temperature dependence of herbicide adsorption from aqueous solutions on activated carbon fiber and cloth

Langmuir. 2006 Nov 7;22(23):9586-90. doi: 10.1021/la061666v.

Authors

M Angeles Fontecha-Camara¹, M Victoria López-Ramón, Miguel A Alvarez-Merino, Carlos Moreno-Castilla

Affiliation

¹ Departamento de Química Inorgánica y Orgánica, Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain.

PMID: 17073483
DOI: 10.1021/la061666v

Abstract

Diuron and amitrole adsorption from aqueous solution on an activated carbon fiber and an activated carbon cloth were studied as a function of temperature. Diuron adsorption was greater than that of amitrole and increased with rising temperature, whereas amitrole adsorption decreased when the temperature increased. Endothermicity of diuron adsorption was due to an increase in the planarity and diffusion of diuron molecules with higher temperatures. However, the exothermicity found for amitrole was due to the increase in amitrole solubility and in vibrational energy of adsorbed molecules with higher temperature. External mass transfer resistance was also found to play an important role in diuron adsorption on activated carbon cloth.