Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction
Abstract The objective of this work was to evaluate the degradation of rhodamine B dye from aqueous solution by photo-Fenton reaction under visible irradiation using a Fe-rich bentonite as a catalyst. The material was thermally treated at a low temperature (200 °C) and characterized by XRD, N2 adsor...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Cerâmica
|
| Series: | Cerâmica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000100147&lng=en&tlng=en |
| _version_ | 1811256551223066624 |
|---|---|
| author | B. M. Zimmermann S. Silvestri J. Leichtweis G. L. Dotto E. S. Mallmann E. L. Foletto |
| author_facet | B. M. Zimmermann S. Silvestri J. Leichtweis G. L. Dotto E. S. Mallmann E. L. Foletto |
| author_sort | B. M. Zimmermann |
| collection | DOAJ |
| description | Abstract The objective of this work was to evaluate the degradation of rhodamine B dye from aqueous solution by photo-Fenton reaction under visible irradiation using a Fe-rich bentonite as a catalyst. The material was thermally treated at a low temperature (200 °C) and characterized by XRD, N2 adsorption-desorption isotherms, FTIR, SEM-EDS and XRF. Iron leaching in aqueous solution after the photo-Fenton reaction was evaluated by atomic absorption spectroscopy. The material exhibited a mesoporous structure, containing a specific surface area of 99 m2.g-1. The catalytic results showed significant dye degradation, reaching 95% of decolorization and 72% of mineralization at 300 min of reaction. The catalyst showed high chemical stability in four reaction cycles. Therefore, this thermally treated Fe-rich bentonite can be considered as a promising catalyst in the heterogeneous photo-Fenton reaction for the degradation of rhodamine B from aqueous solution. |
| first_indexed | 2024-04-12T17:42:51Z |
| format | Article |
| id | doaj.art-eaf2bbb4de5745bd863ffda658ece9a0 |
| institution | Directory Open Access Journal |
| issn | 1678-4553 |
| language | English |
| last_indexed | 2024-04-12T17:42:51Z |
| publisher | Associação Brasileira de Cerâmica |
| record_format | Article |
| series | Cerâmica |
| spelling | doaj.art-eaf2bbb4de5745bd863ffda658ece9a02022-12-22T03:22:46ZengAssociação Brasileira de CerâmicaCerâmica1678-45536537314715210.1590/0366-69132019653732521S0366-69132019000100147Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reactionB. M. ZimmermannS. SilvestriJ. LeichtweisG. L. DottoE. S. MallmannE. L. FolettoAbstract The objective of this work was to evaluate the degradation of rhodamine B dye from aqueous solution by photo-Fenton reaction under visible irradiation using a Fe-rich bentonite as a catalyst. The material was thermally treated at a low temperature (200 °C) and characterized by XRD, N2 adsorption-desorption isotherms, FTIR, SEM-EDS and XRF. Iron leaching in aqueous solution after the photo-Fenton reaction was evaluated by atomic absorption spectroscopy. The material exhibited a mesoporous structure, containing a specific surface area of 99 m2.g-1. The catalytic results showed significant dye degradation, reaching 95% of decolorization and 72% of mineralization at 300 min of reaction. The catalyst showed high chemical stability in four reaction cycles. Therefore, this thermally treated Fe-rich bentonite can be considered as a promising catalyst in the heterogeneous photo-Fenton reaction for the degradation of rhodamine B from aqueous solution.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000100147&lng=en&tlng=enFe-rich bentonitecharacterizationphoto-Fentonrhodamine Bvisible light |
| spellingShingle | B. M. Zimmermann S. Silvestri J. Leichtweis G. L. Dotto E. S. Mallmann E. L. Foletto Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction Cerâmica Fe-rich bentonite characterization photo-Fenton rhodamine B visible light |
| title | Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction |
| title_full | Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction |
| title_fullStr | Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction |
| title_full_unstemmed | Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction |
| title_short | Effect of thermal treatment on the catalytic activity of a Fe-rich bentonite for the photo-Fenton reaction |
| title_sort | effect of thermal treatment on the catalytic activity of a fe rich bentonite for the photo fenton reaction |
| topic | Fe-rich bentonite characterization photo-Fenton rhodamine B visible light |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0366-69132019000100147&lng=en&tlng=en |
| work_keys_str_mv | AT bmzimmermann effectofthermaltreatmentonthecatalyticactivityofaferichbentoniteforthephotofentonreaction AT ssilvestri effectofthermaltreatmentonthecatalyticactivityofaferichbentoniteforthephotofentonreaction AT jleichtweis effectofthermaltreatmentonthecatalyticactivityofaferichbentoniteforthephotofentonreaction AT gldotto effectofthermaltreatmentonthecatalyticactivityofaferichbentoniteforthephotofentonreaction AT esmallmann effectofthermaltreatmentonthecatalyticactivityofaferichbentoniteforthephotofentonreaction AT elfoletto effectofthermaltreatmentonthecatalyticactivityofaferichbentoniteforthephotofentonreaction |