A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite
Local clay (bentonite) and a zeolite (clinoptilolite) have been characterized and used for the removal of Pb(II) and Cd(II) ions from aqueous solutions using batch sorption experiments. Parameters such as the equilibrium time, the effect of pH and temperature were studied. The sorption capacities of...
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| Format: | Article |
| Language: | English |
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SAGE Publications
2009-02-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361709788921588 |
| _version_ | 1797283482316046336 |
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| author | H. Faghihian M. Nejati-Yazdinejad |
| author_facet | H. Faghihian M. Nejati-Yazdinejad |
| author_sort | H. Faghihian |
| collection | DOAJ |
| description | Local clay (bentonite) and a zeolite (clinoptilolite) have been characterized and used for the removal of Pb(II) and Cd(II) ions from aqueous solutions using batch sorption experiments. Parameters such as the equilibrium time, the effect of pH and temperature were studied. The sorption capacities of the two sorbents were calculated by fitting the Langmuir adsorption model to the experimental data points. Metal ion sorption by zeolite [q 0 Pb(II) = 0.515 mmol/g, q 0 Cd(II) = 0.392 mmol/g] was higher than that by bentonite [q 0 Pb(II) = 0.436 mmol/g, q 0 Cd(II) = 0.381 mmol/g]. The removal of Pb(II) ions was much greater than that of Cd(II) ions under identical experimental conditions. The negative values of the Gibbs' free energy change (ΔG 0 ) demonstrate the spontaneous nature of the sorption process with both sorbents, while the positive values of the enthalpy change (ΔH 0 ) indicate that the sorption process was endothermic in nature. |
| first_indexed | 2024-03-07T17:32:16Z |
| format | Article |
| id | doaj.art-bb91c419d36942368f1cf2ed14861728 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T17:32:16Z |
| publishDate | 2009-02-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-bb91c419d36942368f1cf2ed148617282024-03-02T17:47:38ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382009-02-012710.1260/026361709788921588A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and ClinoptiloliteH. FaghihianM. Nejati-YazdinejadLocal clay (bentonite) and a zeolite (clinoptilolite) have been characterized and used for the removal of Pb(II) and Cd(II) ions from aqueous solutions using batch sorption experiments. Parameters such as the equilibrium time, the effect of pH and temperature were studied. The sorption capacities of the two sorbents were calculated by fitting the Langmuir adsorption model to the experimental data points. Metal ion sorption by zeolite [q 0 Pb(II) = 0.515 mmol/g, q 0 Cd(II) = 0.392 mmol/g] was higher than that by bentonite [q 0 Pb(II) = 0.436 mmol/g, q 0 Cd(II) = 0.381 mmol/g]. The removal of Pb(II) ions was much greater than that of Cd(II) ions under identical experimental conditions. The negative values of the Gibbs' free energy change (ΔG 0 ) demonstrate the spontaneous nature of the sorption process with both sorbents, while the positive values of the enthalpy change (ΔH 0 ) indicate that the sorption process was endothermic in nature.https://doi.org/10.1260/026361709788921588 |
| spellingShingle | H. Faghihian M. Nejati-Yazdinejad A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite Adsorption Science & Technology |
| title | A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite |
| title_full | A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite |
| title_fullStr | A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite |
| title_full_unstemmed | A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite |
| title_short | A Comparative Study of the Sorption of Cd(II) and Pb(II) Ions from Aqueous Solution by Local Bentonite and Clinoptilolite |
| title_sort | comparative study of the sorption of cd ii and pb ii ions from aqueous solution by local bentonite and clinoptilolite |
| url | https://doi.org/10.1260/026361709788921588 |
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