Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals
Polyacrylamide was synthesized and chemically modified (PAAm) with 1,2,4,5-tetrahydroxybenzene (THB) or benzene-1,2,4,5-tetrol by applying the reaction conditions of Minisci. A degree of modification as high as 42% was obtained under the following conditions: temperature of 70–80 °C, reaction time o...
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| Format: | Article |
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SAGE Publishing
2013-08-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.31.8.691 |
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| author | Saâd Moulay Nabila Bensacia François Garin Ioana Fechete Anne Boos |
| author_facet | Saâd Moulay Nabila Bensacia François Garin Ioana Fechete Anne Boos |
| author_sort | Saâd Moulay |
| collection | DOAJ |
| description | Polyacrylamide was synthesized and chemically modified (PAAm) with 1,2,4,5-tetrahydroxybenzene (THB) or benzene-1,2,4,5-tetrol by applying the reaction conditions of Minisci. A degree of modification as high as 42% was obtained under the following conditions: temperature of 70–80 °C, reaction time of 3 hours and [2,5-dihydroxy-1,4-benzoquinone]-to-[AAm] ratio of 2.5. The synthesized PAAm and its modified form (THB–PAAm) were characterized by UV–Vis, Fourier transform infrared spectroscopy, 13 C nuclear magnetic resonance, differential scanning calorimetry and thermogravimetric analysis. A severe degradation of the modified PAAm was observed, as confirmed by its relatively low molecular weight. Yet, the glass-transition temperature of THB–PAAm was found to be drastically lower than that of pristine PAAm, 63.1 versus 161.19 °C. A study of copper(II) adsorption by the cross-linked PAAm and THB–PAAm resins was undertaken by varying the following parameters: pH, time, temperature, ionic strength, sorbent mass and initial copper(II) concentration. Adsorption of Pb(II) and Cd(II) by the resins and their corresponding desorption extents were estimated. A new way of crosslinking polyacrylamide and its modified form through an oxidative decarboxylation process is applied. |
| format | Article |
| id | doaj-art-700b85cafec54f66ab4b372c2a4c33bf |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2013-08-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-700b85cafec54f66ab4b372c2a4c33bf2025-01-02T02:59:18ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382013-08-013110.1260/0263-6174.31.8.691Polyacrylamide-Based Sorbents for the Removal of Hazardous MetalsSaâd Moulay0Nabila Bensacia1François Garin2Ioana Fechete3Anne Boos4 Laboratoire de Chimie-Physique Moléculaire et Macromoléculaire, Département de Chimie Industrielle, Faculté des Sciences de L'Ingénieur, Université Saâd Dahlab de Blida, B. P. 270, Route de Soumâa, 09000 Blida, Algeria Laboratoire de Chimie-Physique Moléculaire et Macromoléculaire, Département de Chimie Industrielle, Faculté des Sciences de L'Ingénieur, Université Saâd Dahlab de Blida, B. P. 270, Route de Soumâa, 09000 Blida, Algeria Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse, UMR 7515 CNRS, European Laboratory for Catalysis and Surface Science (ELCASS), Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse, UMR 7515 CNRS, European Laboratory for Catalysis and Surface Science (ELCASS), Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse, UMR 7515 CNRS, European Laboratory for Catalysis and Surface Science (ELCASS), Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, FrancePolyacrylamide was synthesized and chemically modified (PAAm) with 1,2,4,5-tetrahydroxybenzene (THB) or benzene-1,2,4,5-tetrol by applying the reaction conditions of Minisci. A degree of modification as high as 42% was obtained under the following conditions: temperature of 70–80 °C, reaction time of 3 hours and [2,5-dihydroxy-1,4-benzoquinone]-to-[AAm] ratio of 2.5. The synthesized PAAm and its modified form (THB–PAAm) were characterized by UV–Vis, Fourier transform infrared spectroscopy, 13 C nuclear magnetic resonance, differential scanning calorimetry and thermogravimetric analysis. A severe degradation of the modified PAAm was observed, as confirmed by its relatively low molecular weight. Yet, the glass-transition temperature of THB–PAAm was found to be drastically lower than that of pristine PAAm, 63.1 versus 161.19 °C. A study of copper(II) adsorption by the cross-linked PAAm and THB–PAAm resins was undertaken by varying the following parameters: pH, time, temperature, ionic strength, sorbent mass and initial copper(II) concentration. Adsorption of Pb(II) and Cd(II) by the resins and their corresponding desorption extents were estimated. A new way of crosslinking polyacrylamide and its modified form through an oxidative decarboxylation process is applied.https://doi.org/10.1260/0263-6174.31.8.691 |
| spellingShingle | Saâd Moulay Nabila Bensacia François Garin Ioana Fechete Anne Boos Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals Adsorption Science & Technology |
| title | Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals |
| title_full | Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals |
| title_fullStr | Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals |
| title_full_unstemmed | Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals |
| title_short | Polyacrylamide-Based Sorbents for the Removal of Hazardous Metals |
| title_sort | polyacrylamide based sorbents for the removal of hazardous metals |
| url | https://doi.org/10.1260/0263-6174.31.8.691 |
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