The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate
A 3-Amino-Propyl Trimethoxy Silane (APTS) functionalized silica was prepared and investigated. The functionalized silica showed a powerful removal behavior towards Chromium (III) [Cr (III)] and Cadmium (II) [Cd (II)] ions in aqueous solution. Different factors affecting the heavy metal ions adsorpti...
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2025-05-01
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| author | Kenneth O. Amanze Janet O. Amanze Appolinus I. C. Ehirim Lynda C. Ngozi-Olehi Rosemary I. Uchegbu Glory J. Okore Pamela I. Okeke Christian E. Enyoh |
| author_facet | Kenneth O. Amanze Janet O. Amanze Appolinus I. C. Ehirim Lynda C. Ngozi-Olehi Rosemary I. Uchegbu Glory J. Okore Pamela I. Okeke Christian E. Enyoh |
| author_sort | Kenneth O. Amanze |
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| description | A 3-Amino-Propyl Trimethoxy Silane (APTS) functionalized silica was prepared and investigated. The functionalized silica showed a powerful removal behavior towards Chromium (III) [Cr (III)] and Cadmium (II) [Cd (II)] ions in aqueous solution. Different factors affecting the heavy metal ions adsorption on these substrates such as pH, initial concentration, contact time, and temperature were investigated. FT-IR analyses were carried out to characterize the functionalization of salicylaldehyde unto 3-aminopropyl silica. Results showed that optimum adsorption of the metal ions occurred at a pH of 7 and 6 by the pure silica and functionalized silica, respectively. Removal efficiencies of the adsorbents showed the trend: Salicylaldehyde-APTS modified > pure silica. The adsorption was described by the Langmuir adsorption isotherm. The kinetic results showed that the adsorption was described well with the pseudo second-order kinetic model. The study reveals that both pure silica and functionalized silica can be used as good adsorbents for the removal of the heavy metal pollutants from aqueous solutions and may be applied in the treatment of industrial waste waters, and they may be useful in detoxifying our already polluted environments. |
| format | Article |
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| issn | 2673-7167 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Physchem |
| spelling | doaj-art-cf7caac1b87d49afae7c43e5e9879f242025-06-25T14:19:26ZengMDPI AGPhyschem2673-71672025-05-01522010.3390/physchem5020020The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane SalicylateKenneth O. Amanze0Janet O. Amanze1Appolinus I. C. Ehirim2Lynda C. Ngozi-Olehi3Rosemary I. Uchegbu4Glory J. Okore5Pamela I. Okeke6Christian E. Enyoh7Departmento de Quimica Analytica, Universidad de Cadiz, 11003 Cádiz, SpainDepartmento de Quimica Analytica, Universidad de Cadiz, 11003 Cádiz, SpainDepartment of Inorganic Chemistry, Alvan Ikoku Federal University of Education, Owerri PMB 1033, NigeriaDepartment of Physical Chemistry, Alvan Ikoku Federal University of Education, Owerri PMB 1033, NigeriaDepartment of Organic Chemistry, Alvan Ikoku Federal University of Education, Owerri PMB 1033, NigeriaDepartment of Analytical Chemistry, Alvan Ikoku Federal University of Education, Owerri PMB 1033, NigeriaDepartment of Physical Chemistry, Alvan Ikoku Federal University of Education, Owerri PMB 1033, NigeriaGraduate School of Science and Engineering, Saitama University, Saitama 338-8570, JapanA 3-Amino-Propyl Trimethoxy Silane (APTS) functionalized silica was prepared and investigated. The functionalized silica showed a powerful removal behavior towards Chromium (III) [Cr (III)] and Cadmium (II) [Cd (II)] ions in aqueous solution. Different factors affecting the heavy metal ions adsorption on these substrates such as pH, initial concentration, contact time, and temperature were investigated. FT-IR analyses were carried out to characterize the functionalization of salicylaldehyde unto 3-aminopropyl silica. Results showed that optimum adsorption of the metal ions occurred at a pH of 7 and 6 by the pure silica and functionalized silica, respectively. Removal efficiencies of the adsorbents showed the trend: Salicylaldehyde-APTS modified > pure silica. The adsorption was described by the Langmuir adsorption isotherm. The kinetic results showed that the adsorption was described well with the pseudo second-order kinetic model. The study reveals that both pure silica and functionalized silica can be used as good adsorbents for the removal of the heavy metal pollutants from aqueous solutions and may be applied in the treatment of industrial waste waters, and they may be useful in detoxifying our already polluted environments.https://www.mdpi.com/2673-7167/5/2/20heavy metal ionschromium (III) ionscadmium (II) ionsisothermskinetic models3-aminopropyl trimethoxy silane |
| spellingShingle | Kenneth O. Amanze Janet O. Amanze Appolinus I. C. Ehirim Lynda C. Ngozi-Olehi Rosemary I. Uchegbu Glory J. Okore Pamela I. Okeke Christian E. Enyoh The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate Physchem heavy metal ions chromium (III) ions cadmium (II) ions isotherms kinetic models 3-aminopropyl trimethoxy silane |
| title | The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate |
| title_full | The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate |
| title_fullStr | The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate |
| title_full_unstemmed | The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate |
| title_short | The Comparative Removal of Chromium and Cadmium Ions from Aqueous Solutions Using Silica Support Immobilized with 3-Aminopropyl Trimethoxysilane Salicylate |
| title_sort | comparative removal of chromium and cadmium ions from aqueous solutions using silica support immobilized with 3 aminopropyl trimethoxysilane salicylate |
| topic | heavy metal ions chromium (III) ions cadmium (II) ions isotherms kinetic models 3-aminopropyl trimethoxy silane |
| url | https://www.mdpi.com/2673-7167/5/2/20 |
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