Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’
The kinetics, equilibrium and thermodynamics of the biosorption of Cd (II) from aqueous solution by the leaf biomass of Calotropis procera popularly known in western Nigeria as ‘bom bom’and genrally known as Sodom apple were investigated at different experimental conditions. Optimum conditions of pH...
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| Format: | Article |
| Language: | English |
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Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)
2013-05-01
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| Series: | Journal of Applied Sciences and Environmental Management |
| Online Access: | https://www.ajol.info/index.php/jasem/article/view/88512 |
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| author | Babalola J Oyebamiji LC Overah Adesola Babarinde Vincent O Oninla A Olatunde |
| author_facet | Babalola J Oyebamiji LC Overah Adesola Babarinde Vincent O Oninla A Olatunde |
| author_sort | Babalola J Oyebamiji |
| collection | DOAJ |
| description | The kinetics, equilibrium and thermodynamics of the biosorption of Cd (II) from aqueous solution by the leaf biomass of Calotropis procera popularly known in western Nigeria as ‘bom bom’and genrally known as Sodom apple were investigated at different experimental conditions. Optimum conditions of pH, contact time, biomass dosage, initial metal ion concentration and temperature were determined to be 5, 60 minutes, 110 mg, 0.3 mM and 27°C respectively. The maximum biosorption capacity was found to be 8.91 mg/g. The kinetic studies indicated that the biosorption process of the metal ion followed the pseudo-second-order and intraparticle diffusion models with an R2 value of 0.998 and 0.985 respectively. Equilibrium studies showed that the biosorption of Cd (II) is well represented by both Freundlich and Langmuir isotherms but the Langmuir model gave a better fit with an R2 value of 0.979, Langmuir constant bm of 0.0080 and monolayer adsorption capacity, m of 123.46. The calculated thermodynamic parameters (ΔG° -4.846 kJmol-1, ΔH° 10.60 kJmol-1 and ΔS° 0.052 kJK-1mol1) showed that the biosorption of Cd (II) is feasible, spontaneous, endothermic and highly disordered in nature under the experimental conditions. These findings indicate that the leaf of Calotropis procera could be employed in the removal of Cd (II) from industrial effluents. @JASEM
Keywords: Calotropis procera, Cadmium, Adsorption isotherm
J. Appl. Sci. Environ. Manage. Dec, 2011, Vol. 15 (4) 607 - 615 |
| first_indexed | 2024-04-24T06:44:35Z |
| format | Article |
| id | doaj.art-a78db660f9a445fdab62b752abf04ae9 |
| institution | Directory Open Access Journal |
| issn | 2659-1502 2659-1499 |
| language | English |
| last_indexed | 2024-04-24T06:44:35Z |
| publishDate | 2013-05-01 |
| publisher | Joint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP) |
| record_format | Article |
| series | Journal of Applied Sciences and Environmental Management |
| spelling | doaj.art-a78db660f9a445fdab62b752abf04ae92024-04-22T19:47:01ZengJoint Coordination Centre of the World Bank assisted National Agricultural Research Programme (NARP)Journal of Applied Sciences and Environmental Management2659-15022659-14992013-05-01154Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’Babalola J OyebamijiLC OverahAdesola BabarindeVincent O OninlaA OlatundeThe kinetics, equilibrium and thermodynamics of the biosorption of Cd (II) from aqueous solution by the leaf biomass of Calotropis procera popularly known in western Nigeria as ‘bom bom’and genrally known as Sodom apple were investigated at different experimental conditions. Optimum conditions of pH, contact time, biomass dosage, initial metal ion concentration and temperature were determined to be 5, 60 minutes, 110 mg, 0.3 mM and 27°C respectively. The maximum biosorption capacity was found to be 8.91 mg/g. The kinetic studies indicated that the biosorption process of the metal ion followed the pseudo-second-order and intraparticle diffusion models with an R2 value of 0.998 and 0.985 respectively. Equilibrium studies showed that the biosorption of Cd (II) is well represented by both Freundlich and Langmuir isotherms but the Langmuir model gave a better fit with an R2 value of 0.979, Langmuir constant bm of 0.0080 and monolayer adsorption capacity, m of 123.46. The calculated thermodynamic parameters (ΔG° -4.846 kJmol-1, ΔH° 10.60 kJmol-1 and ΔS° 0.052 kJK-1mol1) showed that the biosorption of Cd (II) is feasible, spontaneous, endothermic and highly disordered in nature under the experimental conditions. These findings indicate that the leaf of Calotropis procera could be employed in the removal of Cd (II) from industrial effluents. @JASEM Keywords: Calotropis procera, Cadmium, Adsorption isotherm J. Appl. Sci. Environ. Manage. Dec, 2011, Vol. 15 (4) 607 - 615https://www.ajol.info/index.php/jasem/article/view/88512 |
| spellingShingle | Babalola J Oyebamiji LC Overah Adesola Babarinde Vincent O Oninla A Olatunde Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’ Journal of Applied Sciences and Environmental Management |
| title | Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’ |
| title_full | Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’ |
| title_fullStr | Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’ |
| title_full_unstemmed | Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’ |
| title_short | Kinetic, Equilibrium and thermodynamic studies on the biosorption of Cd(II) from aqueous solutions by the leaf biomass of <i>Calotropis procera</i> – ‘Sodom apple’ |
| title_sort | kinetic equilibrium and thermodynamic studies on the biosorption of cd ii from aqueous solutions by the leaf biomass of i calotropis procera i sodom apple |
| url | https://www.ajol.info/index.php/jasem/article/view/88512 |
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