Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds
This research explored the efficiency of snail shells powder (SSP) for Cu(II) removal from aqueous solutions and the production of valuable compounds from the residual product. To confirm its chemical and mineral components, the material was characterized by different instrumental techniques. The ef...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2021/9537680 |
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| author | Redouane Ouafi Meryem Asri Anass Omor Mustapha Taleb Zakia Rais |
| author_facet | Redouane Ouafi Meryem Asri Anass Omor Mustapha Taleb Zakia Rais |
| author_sort | Redouane Ouafi |
| collection | DOAJ |
| description | This research explored the efficiency of snail shells powder (SSP) for Cu(II) removal from aqueous solutions and the production of valuable compounds from the residual product. To confirm its chemical and mineral components, the material was characterized by different instrumental techniques. The effects of experimental parameters such as the pH of the solution, the effect of SSP dose, particle size, and initial concentration of Cu(II) on the removal process were studied. The removal of Cu(II) was reasonably fast to be completed within a time frame of 90 min. The kinetics following the pseudo-second-order model (R2 = 0.979) were better compared to the pseudo-first-order model (R2 = 0.896). The increase in pH values leads to an increase in the amount of Cu(II) adsorbed. Afterward, the adsorption capacity reaches stability at pH near 7. The maximum Cu(II) removal occurred with a mass of 8 g·L−1 and a particle size of 300 μm. This particle size presents approximately 44.5% of SSP particles, which is the largest proportion of the sample as shown by particle size analysis. The adsorption isotherm was well described by Langmuir and Freundlich equations. The thermodynamic parameters values showed that the Cu(II) adsorption was a spontaneous and exothermic process. Furthermore, with the presence of CaCO3, the precipitation of Cu(II) in the form of posnjakite occurred with a high Cu(II) removal rate close to 99%. The residual SSP was used for the production of valuable compounds through the thermal decomposition process at various temperatures. |
| format | Article |
| id | doaj-art-6cb90b84e38d49cb833d57e844ec7bce |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-6cb90b84e38d49cb833d57e844ec7bce2025-02-03T05:43:46ZengWileyJournal of Chemistry2090-90632090-90712021-01-01202110.1155/2021/95376809537680Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable CompoundsRedouane Ouafi0Meryem Asri1Anass Omor2Mustapha Taleb3Zakia Rais4Engineering Laboratory of Organometallic Molecular Materials and Environment, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, MoroccoMicrobial Biotechnology and Bioactive Molecules Laboratory, Faculty of Sciences and Techniques, Sidi Mohammed Ben Abdellah University, Fez, MoroccoEngineering Laboratory of Organometallic Molecular Materials and Environment, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, MoroccoEngineering Laboratory of Organometallic Molecular Materials and Environment, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, MoroccoEngineering Laboratory of Organometallic Molecular Materials and Environment, Faculty of Science Dhar El Mahraz, Sidi Mohamed Ben Abdellah University, Fez, MoroccoThis research explored the efficiency of snail shells powder (SSP) for Cu(II) removal from aqueous solutions and the production of valuable compounds from the residual product. To confirm its chemical and mineral components, the material was characterized by different instrumental techniques. The effects of experimental parameters such as the pH of the solution, the effect of SSP dose, particle size, and initial concentration of Cu(II) on the removal process were studied. The removal of Cu(II) was reasonably fast to be completed within a time frame of 90 min. The kinetics following the pseudo-second-order model (R2 = 0.979) were better compared to the pseudo-first-order model (R2 = 0.896). The increase in pH values leads to an increase in the amount of Cu(II) adsorbed. Afterward, the adsorption capacity reaches stability at pH near 7. The maximum Cu(II) removal occurred with a mass of 8 g·L−1 and a particle size of 300 μm. This particle size presents approximately 44.5% of SSP particles, which is the largest proportion of the sample as shown by particle size analysis. The adsorption isotherm was well described by Langmuir and Freundlich equations. The thermodynamic parameters values showed that the Cu(II) adsorption was a spontaneous and exothermic process. Furthermore, with the presence of CaCO3, the precipitation of Cu(II) in the form of posnjakite occurred with a high Cu(II) removal rate close to 99%. The residual SSP was used for the production of valuable compounds through the thermal decomposition process at various temperatures.http://dx.doi.org/10.1155/2021/9537680 |
| spellingShingle | Redouane Ouafi Meryem Asri Anass Omor Mustapha Taleb Zakia Rais Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds Journal of Chemistry |
| title | Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds |
| title_full | Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds |
| title_fullStr | Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds |
| title_full_unstemmed | Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds |
| title_short | Snail Shells Adsorbent for Copper Removal from Aqueous Solutions and the Production of Valuable Compounds |
| title_sort | snail shells adsorbent for copper removal from aqueous solutions and the production of valuable compounds |
| url | http://dx.doi.org/10.1155/2021/9537680 |
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