Fontecha-Camara M Angeles, López-Ramón M Victoria, Alvarez-Merino Miguel A, Moreno-Castilla Carlos
Departamento de Química Inorgánica y Orgánica, Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain.
Langmuir. 2006 Nov 7;22(23):9586-90. doi: 10.1021/la061666v.
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.
研究了温度对水溶液中敌草隆和杀草强在活性炭纤维和活性炭布上吸附的影响。敌草隆的吸附量大于杀草强，且随温度升高而增加，而杀草强的吸附量随温度升高而降低。敌草隆吸附的吸热性是由于较高温度下敌草隆分子的平面度和扩散增加。然而，杀草强的放热性是由于较高温度下杀草强溶解度和吸附分子振动能的增加。外部传质阻力在敌草隆在活性炭布上的吸附中也起重要作用。
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