Combined ozonation process and adsorption onto bentonite natural adsorbent for the o-cresol elimination
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Título: | Combined ozonation process and adsorption onto bentonite natural adsorbent for the o-cresol elimination |
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Autor/es: | Taleb, Zoubida | Ramdani, Amina | Berenguer Betrián, Raúl | Ramdani, Nadia | Adjir, Mehdi | Taleb, Safia | Morallon, Emilia | Nemmich, Said | Tilmatine, Amar |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Elimination | O-cresol | Ozonation | Adsorption | Sodium naturalbentonite | Industrial wastewater |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 5-ene-2021 |
Editor: | Taylor & Francis |
Cita bibliográfica: | International Journal of Environmental Analytical Chemistry. 2023, 103(5): 977-994. https://doi.org/10.1080/03067319.2020.1865335 |
Resumen: | This work studies the removal of o-cresol from wastewater by using ozonation followed by adsorption onto sodium natural bentonite (Na-Bent). The degradation of o-cresol was followed by UV-Vis. During ozonation, 2-methylbenzoquinone (2-mBQ) and 2-methylhydroquinone (2-mHQ) were identified as two of the main by-products, while the pH decrease suggested the breakage of aromatic compounds into smaller organic acids. After 30 min treatment, the o-cresol degradation for 250–62.5 mg/L solutions was found between 64–85%, respectively. Next, the wastewater containing persistent o-cresol and by-products was contacted with Na-Bent adsorbent. The solutions and physicochemical properties of Na-Bent were analysed, before and after adsorption, by UV-Vis, FTIR, XRD and N2 adsorption-desorption. Moreover, equilibrium and kinetic experiments were carried out to study the adsorptive properties of the Na-Bent. While sole ozonation or adsorption failed on the remediation of o-cresol solutions, the obtained results show that the contact of ozonated solutions with Na-Bent led to almost total removal of the o-cresol initial concentrations (between 96% and 99%). This excellent performance is assigned to the high volume of interlayer micropores and the suitable surface chemistry of this natural adsorbent. |
Patrocinador/es: | The authors would like to thank the Algerian Directorate General of Scientific Research and Technological Development (DGRSDT) and the Ministry for Higher Education and Scientific Research for the financial support for this work. In addition, the Spanish Ministerio de Economía y Competitividad and FEDER funds (RYC-2017-23618) are gratefully appreciated. |
URI: | http://hdl.handle.net/10045/117637 |
ISSN: | 0306-7319 (Print) | 1029-0397 (Online) |
DOI: | 10.1080/03067319.2020.1865335 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2021 Informa UK Limited, trading as Taylor & Francis Group |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1080/03067319.2020.1865335 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas |
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Taleb_etal_2021_IntJEnvironAnalChem_final.pdf | Versión final (acceso restringido) | 3,73 MB | Adobe PDF | Abrir Solicitar una copia |
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