New chitosan-imine derivatives: from green chemistry to removal of heavy metals from water
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad de Antioquia
2018
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| _version_ | 1876451292506750976 |
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| author | Vivian Lizeth Triana-Guzmán |
| author_facet | Vivian Lizeth Triana-Guzmán |
| contents | New chitosan-imine derivatives: from green chemistry to removal of heavy metals from water Vivian Lizeth Triana-Guzmán Yury Ruiz-Cruz Elkin Libardo Romero-Peñaloza Héctor Fabio Zuluaga-Corrales Manuel Noé Chaur-Valencia Ingeniería chitosan Biopolymers green chemistry water treatment deacetilation degree Three novel imine-chitosan derivatives were synthesized by condensation of the amino terminals of chitosan and 4-bromomethyl-2-hydroxybenzaldehyde A1, 4-formyl-2-hydroxybenzoic acid A2, and (E)-6-((2-(pyridin-2-yl) hydrazono)methyl) picolinaldehyde A3. Noteworthy, is the aqueous synthesis of imine-chitosan compounds using relatively mild conditions (70 °C) in a green chemistry fashion. The new compounds were characterized by 1H-NMR, FT-IR, elemental analysis, thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC). A solubility study at different pH values was performed for the three compounds, obtaining very different behaviors when compared to that of the pristine chitosan. Finally, by means of atomic absorption the ability to remove heavy metal ions, such as Pb(II) and Hg(II), was investigated for the imine-chitosan derivatives, which showed a high removal percentage at basic pH (between 8-10) but low removal percentage at pH lower than 5. Additionally, the nature of the substituent determines the solubility of the resulting adducts thus widening the potential applications of chitosan derivatives. 2018 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43060744005 https://www.redalyc.org/journal/430/43060744005/ https://www.redalyc.org/journal/430/43060744005/html/ https://www.redalyc.org/journal/430/43060744005/43060744005.epub https://www.redalyc.org/journal/430/43060744005/movil 10.17533/udea.redin.n89a05 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.89 |
| format | Artículo científico |
| id | redalyc_43060744005 |
| institution | Redalyc |
| language | en |
| publishDate | 2018 |
| publisher | Universidad de Antioquia |
| spellingShingle | New chitosan-imine derivatives: from green chemistry to removal of heavy metals from water Vivian Lizeth Triana-Guzmán Ingeniería chitosan Biopolymers green chemistry water treatment deacetilation degree New chitosan-imine derivatives: from green chemistry to removal of heavy metals from water Vivian Lizeth Triana-Guzmán Yury Ruiz-Cruz Elkin Libardo Romero-Peñaloza Héctor Fabio Zuluaga-Corrales Manuel Noé Chaur-Valencia Ingeniería chitosan Biopolymers green chemistry water treatment deacetilation degree Three novel imine-chitosan derivatives were synthesized by condensation of the amino terminals of chitosan and 4-bromomethyl-2-hydroxybenzaldehyde A1, 4-formyl-2-hydroxybenzoic acid A2, and (E)-6-((2-(pyridin-2-yl) hydrazono)methyl) picolinaldehyde A3. Noteworthy, is the aqueous synthesis of imine-chitosan compounds using relatively mild conditions (70 °C) in a green chemistry fashion. The new compounds were characterized by 1H-NMR, FT-IR, elemental analysis, thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC). A solubility study at different pH values was performed for the three compounds, obtaining very different behaviors when compared to that of the pristine chitosan. Finally, by means of atomic absorption the ability to remove heavy metal ions, such as Pb(II) and Hg(II), was investigated for the imine-chitosan derivatives, which showed a high removal percentage at basic pH (between 8-10) but low removal percentage at pH lower than 5. Additionally, the nature of the substituent determines the solubility of the resulting adducts thus widening the potential applications of chitosan derivatives. 2018 artículo científico 0120-6230 https://www.redalyc.org/articulo.oa?id=43060744005 https://www.redalyc.org/journal/430/43060744005/ https://www.redalyc.org/journal/430/43060744005/html/ https://www.redalyc.org/journal/430/43060744005/43060744005.epub https://www.redalyc.org/journal/430/43060744005/movil 10.17533/udea.redin.n89a05 en http://www.redalyc.org/revista.oa?id=430 Revista Facultad de Ingeniería Universidad de Antioquia application/pdf Universidad de Antioquia Revista Facultad de Ingeniería Universidad de Antioquia (Colombia) Num.89 |
| title | New chitosan-imine derivatives: from green chemistry to removal of heavy metals from water |
| topic | Ingeniería chitosan Biopolymers green chemistry water treatment deacetilation degree |
| url | https://www.redalyc.org/articulo.oa?id=43060744005 https://www.redalyc.org/journal/430/43060744005/ https://www.redalyc.org/journal/430/43060744005/html/ https://www.redalyc.org/journal/430/43060744005/43060744005.epub https://www.redalyc.org/journal/430/43060744005/movil |