<abstract xmlns="http://www.w3.org/1999/xhtml">Adsorption of 8-hydroxyquinoline (8HQ) on powdered orange peel (POP), a locally available adsorbent, has been studied. Experiment was performed on different 8HQ concentration, particle size, and adsorbent dosage. The Langmuir and Freundlich adsorption isotherm model has been tested. The obtained results best fitted the Langmuir model, suggesting monolayer adsorption of 8HQ on POP. The kinetic studies for the adsorption process were also carried out using pseudo-first- and pseudo-second-order models, and the data obtained is best fitted to the pseudo-second-order kinetic model. Thermodynamic parameters were calculated for the adsorption process and the result showed that the values of ΔGads, ΔHads, and ΔSads are −1171.4J/mol, −140J/mol and −40.5 J/K at 303 K. Thus, it can be summarized that the adsorption of 8HQ is spontaneous, chemisorbed, monolayer, and exothermic</abstract>

Adsorption of 8-hydroxyquinoline (8HQ) on powdered orange peel (POP), a locally available adsorbent, has been studied. Experiment was performed on different 8HQ concentration, particle size, and adsorbent dosage. The Langmuir and Freundlich adsorption isotherm model has been tested. The obtained results best fitted the Langmuir model, suggesting monolayer adsorption of 8HQ on POP. The kinetic studies for the adsorption process were also carried out using pseudo-first- and pseudo-second-order models, and the data obtained is best fitted to the pseudo-second-order kinetic model. Thermodynamic parameters were calculated for the adsorption process and the result showed that the values of ΔGads, ΔHads, and ΔSads are −1171.4J/mol, −140J/mol and −40.5 J/K at 303 K. Thus, it can be summarized that the adsorption of 8HQ is spontaneous, chemisorbed, monolayer, and exothermic

8-Hydroxyqunoline adsorption from aqueous solution using powdered orange peel: kinetic and isotherm study

Department of Chemistry, College of Natural Sciences, Jimma University, P.O. Box 378, Jimma, Ethiopia

Acta Universitatis Sapientiae, Agriculture and Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Adsorption of 8-hydroxyquinoline (8HQ) on powdered orange peel (POP), a locally available adsorbent, has been studied. Experiment was performed on different...

8-Hydroxyqunoline adsorption from aqueous solution using powdered orange peel: kinetic and isotherm study

Publicado en línea: 22 dic 2015

Páginas: 36 - 46

Recibido: 05 mar 2015

Aceptado: 02 jun 2015

DOI: https://doi.org/10.1515/ausae-2015-0003

Palabras clave
adsorption, 8-hydroxyquinoline, orange peel, isotherm model

© 2015 Khalid Siraj et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

8-Hydroxyqunoline adsorption from aqueous solution using powdered orange peel: kinetic and isotherm study

Publicado en línea: 22 dic 2015

Páginas: 36 - 46

Recibido: 05 mar 2015

Aceptado: 02 jun 2015

DOI: https://doi.org/10.1515/ausae-2015-0003

Palabras claveadsorption, 8-hydroxyquinoline, orange peel, isotherm model

© 2015 Khalid Siraj et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Palabras clave
adsorption, 8-hydroxyquinoline, orange peel, isotherm model