Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust
Carra sawdust pretrated with formaldehyde was used to adsorb RR239 (reactive azo dye) at varying pH and zerovalent iron (ZVI) dosage. Modeling of kinetic results shows that sorption process is best described by the pseudo-second-order model. Batch experiments suggest that the decolorization efficie...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universidad de Antioquia
2013-02-01
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| Series: | Revista Facultad de Ingeniería Universidad de Antioquia |
| Subjects: | |
| Online Access: | https://revistas.udea.edu.co/index.php/ingenieria/article/view/14677 |
| _version_ | 1797861604260315136 |
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| author | Nedher Sánchez Mario Vazquez Roberto Torresi |
| author_facet | Nedher Sánchez Mario Vazquez Roberto Torresi |
| author_sort | Nedher Sánchez |
| collection | DOAJ |
| description |
Carra sawdust pretrated with formaldehyde was used to adsorb RR239 (reactive azo dye) at varying pH and zerovalent iron (ZVI) dosage. Modeling of kinetic results shows that sorption process is best described by the pseudo-second-order model. Batch experiments suggest that the decolorization efficiency was strongly enhanced with the presence of ZVI and low solution pH. The kinetics of dye sorption by mixed sorbent (5 g of sawdust and 180 mg of ZVI) at pH 2.0 was rapid, reaching more than 90% of the total discoloration in three minutes.
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| first_indexed | 2024-04-09T22:06:54Z |
| format | Article |
| id | doaj.art-230b55f8f2d74712b9a48291b71d06cc |
| institution | Directory Open Access Journal |
| issn | 0120-6230 2422-2844 |
| language | English |
| last_indexed | 2024-04-09T22:06:54Z |
| publishDate | 2013-02-01 |
| publisher | Universidad de Antioquia |
| record_format | Article |
| series | Revista Facultad de Ingeniería Universidad de Antioquia |
| spelling | doaj.art-230b55f8f2d74712b9a48291b71d06cc2023-03-23T12:35:54ZengUniversidad de AntioquiaRevista Facultad de Ingeniería Universidad de Antioquia0120-62302422-28442013-02-015510.17533/udea.redin.14677Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdustNedher Sánchez0Mario Vazquez1Roberto Torresi2University of AntioquiaUniversity of AntioquiaUniversity of São Paulo Carra sawdust pretrated with formaldehyde was used to adsorb RR239 (reactive azo dye) at varying pH and zerovalent iron (ZVI) dosage. Modeling of kinetic results shows that sorption process is best described by the pseudo-second-order model. Batch experiments suggest that the decolorization efficiency was strongly enhanced with the presence of ZVI and low solution pH. The kinetics of dye sorption by mixed sorbent (5 g of sawdust and 180 mg of ZVI) at pH 2.0 was rapid, reaching more than 90% of the total discoloration in three minutes. https://revistas.udea.edu.co/index.php/ingenieria/article/view/14677zerovalent iron particles (ZVI) azo dye sorption kineticspseudo-second order |
| spellingShingle | Nedher Sánchez Mario Vazquez Roberto Torresi Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust Revista Facultad de Ingeniería Universidad de Antioquia zerovalent iron particles (ZVI) azo dye sorption kinetics pseudo-second order |
| title | Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust |
| title_full | Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust |
| title_fullStr | Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust |
| title_full_unstemmed | Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust |
| title_short | Degradation and adsorption of AZO RR239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust |
| title_sort | degradation and adsorption of azo rr239 dye in aqueous solution by nanoscale zerovalent iron particles immobilized on sawdust |
| topic | zerovalent iron particles (ZVI) azo dye sorption kinetics pseudo-second order |
| url | https://revistas.udea.edu.co/index.php/ingenieria/article/view/14677 |
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