Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Adsorption of Chromium onto Activated Alumina: Kinetics and Thermodynamics Studies
In this study, the removal of chromium (VI) by adsorption on activated alumina was investigated and the results were fitted to Langmuir, Freundlich, Dubinin‐Redushkevich, and Temkin adsorption models at various temperatures. The constants of each model were evaluated depending on temperature. Thermodynamic parameters for the adsorption system were determined at 10, 25 and 40°C. (ΔH° = −21.18 kJ.mol−1; ΔG° = −8.75 to −7.43 kJ.mol−1 and ΔS° = −0.043 kJ.K−1.mol−1). The obtained values showed that chromium (VI) adsorption is a spontaneous and exothermic process. The kinetic process was evaluated by first‐order, second‐order and Elovich kinetic models.
Adsorption of Chromium onto Activated Alumina: Kinetics and Thermodynamics Studies
In this study, the removal of chromium (VI) by adsorption on activated alumina was investigated and the results were fitted to Langmuir, Freundlich, Dubinin‐Redushkevich, and Temkin adsorption models at various temperatures. The constants of each model were evaluated depending on temperature. Thermodynamic parameters for the adsorption system were determined at 10, 25 and 40°C. (ΔH° = −21.18 kJ.mol−1; ΔG° = −8.75 to −7.43 kJ.mol−1 and ΔS° = −0.043 kJ.K−1.mol−1). The obtained values showed that chromium (VI) adsorption is a spontaneous and exothermic process. The kinetic process was evaluated by first‐order, second‐order and Elovich kinetic models.
Adsorption of Chromium onto Activated Alumina: Kinetics and Thermodynamics Studies
Marzouk, Ikhlass (Autor:in) / Dammak, Lassaad (Autor:in) / Hamrouni, Béchir (Autor:in)
Water Environment Research ; 85 ; 99-104
01.02.2013
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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