A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution
The present study reports the use of raw, iron oxide, and aluminum oxide impregnated carbon nanotubes (CNTs) for the adsorption of hexavalent chromium (Cr(VI)) ions from aqueous solution. The raw CNTs were impregnated with 1% and 10% loadings (weight %) of iron oxide and aluminum oxide nanoparticles...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Bioinorganic Chemistry and Applications |
| Online Access: | http://dx.doi.org/10.1155/2017/1624243 |
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| author | Muhammad I. Qureshi Faheemuddin Patel Nadhir Al-Baghli Basim Abussaud Bassam S. Tawabini Tahar Laoui |
| author_facet | Muhammad I. Qureshi Faheemuddin Patel Nadhir Al-Baghli Basim Abussaud Bassam S. Tawabini Tahar Laoui |
| author_sort | Muhammad I. Qureshi |
| collection | DOAJ |
| description | The present study reports the use of raw, iron oxide, and aluminum oxide impregnated carbon nanotubes (CNTs) for the adsorption of hexavalent chromium (Cr(VI)) ions from aqueous solution. The raw CNTs were impregnated with 1% and 10% loadings (weight %) of iron oxide and aluminum oxide nanoparticles using wet impregnation technique. The synthesized materials were characterized using scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Batch adsorption experiments were performed to assess the removal efficiency of Cr(VI) ions from water and the effects of pH, contact time, adsorbent dosage, and initial concentration of the Cr(VI) ions were investigated. Results of the study revealed that impregnated CNTs achieved significant increase in the removal efficiency of Cr(VI) ions compared to raw CNTs. In fact, both CNTs impregnated with 10% loading of iron and aluminum oxides were able to remove up to 100% of Cr(VI) ions from aqueous solution. Isotherm studies were carried out using Langmuir and Freundlich isotherm models. Adsorption kinetics of Cr(VI) ions from water was found to be well described by the pseudo-second-order model. The results suggest that metallic oxide impregnated CNTs have very good potential application in the removal of Cr(VI) ions from water resulting in better environmental protection. |
| format | Article |
| id | doaj-art-2c9a669c20874d6fa55a1e11b4ebdbbf |
| institution | Kabale University |
| issn | 1565-3633 1687-479X |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Bioinorganic Chemistry and Applications |
| spelling | doaj-art-2c9a669c20874d6fa55a1e11b4ebdbbf2025-02-03T05:43:37ZengWileyBioinorganic Chemistry and Applications1565-36331687-479X2017-01-01201710.1155/2017/16242431624243A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous SolutionMuhammad I. Qureshi0Faheemuddin Patel1Nadhir Al-Baghli2Basim Abussaud3Bassam S. Tawabini4Tahar Laoui5Department of Chemical Engineering, KFUPM, Dhahran 31261, Saudi ArabiaDepartment of Mechanical Engineering, KFUPM, Dhahran 31261, Saudi ArabiaDepartment of Chemical Engineering, KFUPM, Dhahran 31261, Saudi ArabiaDepartment of Chemical Engineering, KFUPM, Dhahran 31261, Saudi ArabiaDepartment of Geosciences, KFUPM, Dhahran 31261, Saudi ArabiaDepartment of Mechanical Engineering, KFUPM, Dhahran 31261, Saudi ArabiaThe present study reports the use of raw, iron oxide, and aluminum oxide impregnated carbon nanotubes (CNTs) for the adsorption of hexavalent chromium (Cr(VI)) ions from aqueous solution. The raw CNTs were impregnated with 1% and 10% loadings (weight %) of iron oxide and aluminum oxide nanoparticles using wet impregnation technique. The synthesized materials were characterized using scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Batch adsorption experiments were performed to assess the removal efficiency of Cr(VI) ions from water and the effects of pH, contact time, adsorbent dosage, and initial concentration of the Cr(VI) ions were investigated. Results of the study revealed that impregnated CNTs achieved significant increase in the removal efficiency of Cr(VI) ions compared to raw CNTs. In fact, both CNTs impregnated with 10% loading of iron and aluminum oxides were able to remove up to 100% of Cr(VI) ions from aqueous solution. Isotherm studies were carried out using Langmuir and Freundlich isotherm models. Adsorption kinetics of Cr(VI) ions from water was found to be well described by the pseudo-second-order model. The results suggest that metallic oxide impregnated CNTs have very good potential application in the removal of Cr(VI) ions from water resulting in better environmental protection.http://dx.doi.org/10.1155/2017/1624243 |
| spellingShingle | Muhammad I. Qureshi Faheemuddin Patel Nadhir Al-Baghli Basim Abussaud Bassam S. Tawabini Tahar Laoui A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution Bioinorganic Chemistry and Applications |
| title | A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution |
| title_full | A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution |
| title_fullStr | A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution |
| title_full_unstemmed | A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution |
| title_short | A Comparative Study of Raw and Metal Oxide Impregnated Carbon Nanotubes for the Adsorption of Hexavalent Chromium from Aqueous Solution |
| title_sort | comparative study of raw and metal oxide impregnated carbon nanotubes for the adsorption of hexavalent chromium from aqueous solution |
| url | http://dx.doi.org/10.1155/2017/1624243 |
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