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Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies
The presence of synthetic dyes in water causes serious environmental issues owing to the low water quality, toxicity to environment and human carcinogenic effects. Adsorption has emerged as simple and environmental benign processes for wastewater treatment. This work reports the use of porous Fe-bas...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085003/ https://www.ncbi.nlm.nih.gov/pubmed/32131394 http://dx.doi.org/10.3390/ma13051107 |
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author | Paz, Camila B. Araújo, Rinaldo S. Oton, Lais F. Oliveira, Alcineia C. Soares, João M. Medeiros, Susana N. Rodríguez-Castellón, Enrique Rodríguez-Aguado, Elena |
author_facet | Paz, Camila B. Araújo, Rinaldo S. Oton, Lais F. Oliveira, Alcineia C. Soares, João M. Medeiros, Susana N. Rodríguez-Castellón, Enrique Rodríguez-Aguado, Elena |
author_sort | Paz, Camila B. |
collection | PubMed |
description | The presence of synthetic dyes in water causes serious environmental issues owing to the low water quality, toxicity to environment and human carcinogenic effects. Adsorption has emerged as simple and environmental benign processes for wastewater treatment. This work reports the use of porous Fe-based composites as adsorbents for Acid Red 66 dye removal in an aqueous solution. The porous FeC and Fe/FeC solids were prepared by hydrothermal methods using iron sulfates and sucrose as precursors. The physicochemical properties of the solids were evaluated through X-ray diffraction (XRD), Scanning electron microscopy coupled with Energy dispersive spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared s (FTIR), Raman and Mössbauer spectroscopies, nitrogen adsorption–desorption isotherms, Electron Paramagnetic Resonance (EPR) and magnetic saturation techniques. Results indicated that the Fe species holds magnetic properties and formed well dispersed Fe(3)O(4) nanoparticles on a carbon layer in FeC nanocomposite. Adding iron to the previous solid resulted in the formation of γ-Fe(2)O(3) coating on the FeC type structure as in Fe/FeC composite. The highest dye adsorption capacity was 15.5 mg·g(−1) for FeC nanocomposite at 25 °C with the isotherms fitting well with the Langmuir model. The removal efficiency of 98.4% was obtained with a pristine Fe sample under similar experimental conditions. |
format | Online Article Text |
id | pubmed-7085003 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70850032020-03-23 Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies Paz, Camila B. Araújo, Rinaldo S. Oton, Lais F. Oliveira, Alcineia C. Soares, João M. Medeiros, Susana N. Rodríguez-Castellón, Enrique Rodríguez-Aguado, Elena Materials (Basel) Article The presence of synthetic dyes in water causes serious environmental issues owing to the low water quality, toxicity to environment and human carcinogenic effects. Adsorption has emerged as simple and environmental benign processes for wastewater treatment. This work reports the use of porous Fe-based composites as adsorbents for Acid Red 66 dye removal in an aqueous solution. The porous FeC and Fe/FeC solids were prepared by hydrothermal methods using iron sulfates and sucrose as precursors. The physicochemical properties of the solids were evaluated through X-ray diffraction (XRD), Scanning electron microscopy coupled with Energy dispersive spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared s (FTIR), Raman and Mössbauer spectroscopies, nitrogen adsorption–desorption isotherms, Electron Paramagnetic Resonance (EPR) and magnetic saturation techniques. Results indicated that the Fe species holds magnetic properties and formed well dispersed Fe(3)O(4) nanoparticles on a carbon layer in FeC nanocomposite. Adding iron to the previous solid resulted in the formation of γ-Fe(2)O(3) coating on the FeC type structure as in Fe/FeC composite. The highest dye adsorption capacity was 15.5 mg·g(−1) for FeC nanocomposite at 25 °C with the isotherms fitting well with the Langmuir model. The removal efficiency of 98.4% was obtained with a pristine Fe sample under similar experimental conditions. MDPI 2020-03-02 /pmc/articles/PMC7085003/ /pubmed/32131394 http://dx.doi.org/10.3390/ma13051107 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Paz, Camila B. Araújo, Rinaldo S. Oton, Lais F. Oliveira, Alcineia C. Soares, João M. Medeiros, Susana N. Rodríguez-Castellón, Enrique Rodríguez-Aguado, Elena Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies |
title | Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies |
title_full | Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies |
title_fullStr | Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies |
title_full_unstemmed | Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies |
title_short | Acid Red 66 Dye Removal from Aqueous Solution by Fe/C-based Composites: Adsorption, Kinetics and Thermodynamic Studies |
title_sort | acid red 66 dye removal from aqueous solution by fe/c-based composites: adsorption, kinetics and thermodynamic studies |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085003/ https://www.ncbi.nlm.nih.gov/pubmed/32131394 http://dx.doi.org/10.3390/ma13051107 |
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