Adsorption of nickel from aqueous solution by the use of low-cost adsorbents
The removal of Ni(II) from aqueous solution by different adsorbents was investigated. Calcined phosphate, red mud, clarified sludge (a steel industry waste material) were used for the adsorption studies. The influence of pH, contact time, initial metal concentration, adsorbent nature and concentrati...
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| Veröffentlicht in: | Desalination and water treatment 2009-12, Vol.12 (1-3), p.276-283 |
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| container_title | Desalination and water treatment |
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| creator | Hannachi, Yasser Shapovalov, N.A. Hannachi, Aymen |
| description | The removal of Ni(II) from aqueous solution by different adsorbents was investigated. Calcined phosphate, red mud, clarified sludge (a steel industry waste material) were used for the adsorption studies. The influence of pH, contact time, initial metal concentration, adsorbent nature and concentration on the selectivity and sensitivity of the removal process was investigated. The adsorption process was found to follow a first-order rate mechanism and rate constant was evaluated at 30°C. Langmuir and Freundlich adsorption isotherms fit well in the experimental data and their constants were evaluated. The thermodynamic equilibrium constant and the Gibbs free energy were calculated for each system. The adsorption capacity (qmax) calculated from Langmuir isotherm and the values of Gibbs free energy obtained showed that Calcined phosphate has the largest capacity and affinity for the removal of Ni(II) compared to the other adsorbents used in the study. |
| doi_str_mv | 10.5004/dwt.2009.953 |
| format | Article |
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The adsorption capacity (qmax) calculated from Langmuir isotherm and the values of Gibbs free energy obtained showed that Calcined phosphate has the largest capacity and affinity for the removal of Ni(II) compared to the other adsorbents used in the study.</description><identifier>ISSN: 1944-3986</identifier><identifier>ISSN: 1944-3994</identifier><identifier>DOI: 10.5004/dwt.2009.953</identifier><language>eng</language><publisher>Elsevier Inc</publisher><subject>Calcined phosphate ; Clarified sludge ; First-order rate mechanism ; Freundlich isotherm ; Gibbs free energy ; Langmuir isotherm ; Red mud</subject><ispartof>Desalination and water treatment, 2009-12, Vol.12 (1-3), p.276-283</ispartof><rights>2009 Elsevier Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c346t-23a922bd6c03b4e426e0d39b77095ba6f190adc453cd3d858b0f62569dcc59013</citedby><cites>FETCH-LOGICAL-c346t-23a922bd6c03b4e426e0d39b77095ba6f190adc453cd3d858b0f62569dcc59013</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Hannachi, Yasser</creatorcontrib><creatorcontrib>Shapovalov, N.A.</creatorcontrib><creatorcontrib>Hannachi, Aymen</creatorcontrib><title>Adsorption of nickel from aqueous solution by the use of low-cost adsorbents</title><title>Desalination and water treatment</title><description>The removal of Ni(II) from aqueous solution by different adsorbents was investigated. 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Calcined phosphate, red mud, clarified sludge (a steel industry waste material) were used for the adsorption studies. The influence of pH, contact time, initial metal concentration, adsorbent nature and concentration on the selectivity and sensitivity of the removal process was investigated. The adsorption process was found to follow a first-order rate mechanism and rate constant was evaluated at 30°C. Langmuir and Freundlich adsorption isotherms fit well in the experimental data and their constants were evaluated. The thermodynamic equilibrium constant and the Gibbs free energy were calculated for each system. 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| ispartof | Desalination and water treatment, 2009-12, Vol.12 (1-3), p.276-283 |
| issn | 1944-3986 1944-3994 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_746081336 |
| source | Alma/SFX Local Collection |
| subjects | Calcined phosphate Clarified sludge First-order rate mechanism Freundlich isotherm Gibbs free energy Langmuir isotherm Red mud |
| title | Adsorption of nickel from aqueous solution by the use of low-cost adsorbents |
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