New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media
The existence of heavy metal ions in aqueous media is one of the biggest environmental pollution problems and thus the removal of heavy metals is a very important procedure. In this work, a new adsorbent was synthesized by modifying 3-aminopropyl-functionalized silica gel with thiamine (vitamin B1)...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2017-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2017/0352-51391600098D.pdf |
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| author | Deniz Sabahattin Taşci Neşe Yetimoğlu Ece Kök Kahraman Memet Vezir |
| author_facet | Deniz Sabahattin Taşci Neşe Yetimoğlu Ece Kök Kahraman Memet Vezir |
| author_sort | Deniz Sabahattin |
| collection | DOAJ |
| description | The existence of heavy metal ions in aqueous media is one of the biggest environmental pollution problems and thus the removal of heavy metals is a very important procedure. In this work, a new adsorbent was synthesized by modifying 3-aminopropyl-functionalized silica gel with thiamine (vitamin B1) and characterized. The influence of the uptake conditions, such as pH, contact time, initial feed concentration and foreign metal ions, on the binding capacity of thiamine-functionalized silica gel sorbent (M3APS) were investigated. Maximum obtained adsorption capacities for Pb(II), Hg(II) and Cd(II) were 39.4±0.2, 30.9±0.5 and 9.54±0.4 mg g-1 M3APS, respectively, at pH 5.0. The observed selectivity of M3APS for these metal ions was the following: Pb(II) > Hg(II) > Cd(II). Adsorption isotherm models were also applied to the adsorption process. As a result, the Langmuir isotherm model gave the best fit for the adsorption of metal ions on M3APS. The Gibbs energy change (ΔG) for the adsorption of Pb(II), Hg(II) and Cd(II) were calculated to predict the nature of adsorption process. Having such satisfactory adsorption results, M3APS is a potential candidate adsorbent for Pb(II) and Hg(II) removal from aqueous media. |
| first_indexed | 2024-12-12T05:07:58Z |
| format | Article |
| id | doaj.art-9ae4e685205044a4b81b978a02a6d3e1 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-12T05:07:58Z |
| publishDate | 2017-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-9ae4e685205044a4b81b978a02a6d3e12022-12-22T00:37:03ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212017-01-0182221522610.2298/JSC160816098D0352-51391600098DNew thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous mediaDeniz Sabahattin0Taşci Neşe1Yetimoğlu Ece Kök2Kahraman Memet Vezir3Marmara University, Faculty of Technology, Textile Engineering Department, Goztepe Campus, Istanbul, TurkeyMarmara University, Faculty of Science and Letters, Chemistry Department, Goztepe Campus, Istanbul, TurkeyMarmara University, Faculty of Science and Letters, Chemistry Department, Goztepe Campus, Istanbul, TurkeyMarmara University, Faculty of Science and Letters, Chemistry Department, Goztepe Campus, Istanbul, TurkeyThe existence of heavy metal ions in aqueous media is one of the biggest environmental pollution problems and thus the removal of heavy metals is a very important procedure. In this work, a new adsorbent was synthesized by modifying 3-aminopropyl-functionalized silica gel with thiamine (vitamin B1) and characterized. The influence of the uptake conditions, such as pH, contact time, initial feed concentration and foreign metal ions, on the binding capacity of thiamine-functionalized silica gel sorbent (M3APS) were investigated. Maximum obtained adsorption capacities for Pb(II), Hg(II) and Cd(II) were 39.4±0.2, 30.9±0.5 and 9.54±0.4 mg g-1 M3APS, respectively, at pH 5.0. The observed selectivity of M3APS for these metal ions was the following: Pb(II) > Hg(II) > Cd(II). Adsorption isotherm models were also applied to the adsorption process. As a result, the Langmuir isotherm model gave the best fit for the adsorption of metal ions on M3APS. The Gibbs energy change (ΔG) for the adsorption of Pb(II), Hg(II) and Cd(II) were calculated to predict the nature of adsorption process. Having such satisfactory adsorption results, M3APS is a potential candidate adsorbent for Pb(II) and Hg(II) removal from aqueous media.http://www.doiserbia.nb.rs/img/doi/0352-5139/2017/0352-51391600098D.pdfheavy metal ionsadsorptionAASenvironmental remediation. |
| spellingShingle | Deniz Sabahattin Taşci Neşe Yetimoğlu Ece Kök Kahraman Memet Vezir New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media Journal of the Serbian Chemical Society heavy metal ions adsorption AAS environmental remediation. |
| title | New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media |
| title_full | New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media |
| title_fullStr | New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media |
| title_full_unstemmed | New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media |
| title_short | New thiamine functionalized silica microparticules as a sorbent for the removal of lead, mercury and cadmium ions in aqueous media |
| title_sort | new thiamine functionalized silica microparticules as a sorbent for the removal of lead mercury and cadmium ions in aqueous media |
| topic | heavy metal ions adsorption AAS environmental remediation. |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2017/0352-51391600098D.pdf |
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