Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents
Contamination of effluents with chemicals is a serious problem that impacts human health. Methylene blue is a cationic dye found frequently in industrial and urban sewages. In this work, dried grinded seeds and peels of nance were used as biosorbents in aqueous solutions at pH 7 and 10 (simulating u...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2021/5556940 |
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| author | Lorena Robles-Melchor Maribel Cornejo-Mazón Diana Maylet Hernández-Martínez Gustavo F. Gutiérrez-López Santiago García-Pinilla Edgar Oliver López-Villegas Darío Iker Téllez-Medina |
| author_facet | Lorena Robles-Melchor Maribel Cornejo-Mazón Diana Maylet Hernández-Martínez Gustavo F. Gutiérrez-López Santiago García-Pinilla Edgar Oliver López-Villegas Darío Iker Téllez-Medina |
| author_sort | Lorena Robles-Melchor |
| collection | DOAJ |
| description | Contamination of effluents with chemicals is a serious problem that impacts human health. Methylene blue is a cationic dye found frequently in industrial and urban sewages. In this work, dried grinded seeds and peels of nance were used as biosorbents in aqueous solutions at pH 7 and 10 (simulating urban and textile effluents) finding that Langmuir and Freundlich isotherms adequately described the sorption. Adsorption efficiencies were larger than 98% in all cases and slightly lower at pH 7 due to the closeness with the point of zero charge (pzc) of seeds and peels of nance (5.96 and 3.42, respectively). In all cases, Langmuir adsorption was favorable (RLa < 1), and Gibbs free energy of adsorption was negative indicating spontaneity, and since these values were larger than −80 but lower than 0 kJ/mol, the MB removal process was mainly due to physical interactions, a characteristic of physical adsorption. No significant differences were found amongst bulk mass transfer coefficients for the adsorption of both sorbents, indicating that both bioadsorbents had the same hydrodynamic and driving forces as well as depicted similar MB-adsorbent affinities. Interaction of MB with adsorbents was corroborated by FTIR spectroscopy, and the sorption was evidenced by scanning electron microscopy and image analysis which indicated that both adsorbents had fractal structures. |
| format | Article |
| id | doaj-art-d75e476ed01f4be2a18880c9f24aec4d |
| institution | OA Journals |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-d75e476ed01f4be2a18880c9f24aec4d2025-08-20T02:19:34ZengWileyJournal of Chemistry2090-90632090-90712021-01-01202110.1155/2021/55569405556940Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural BiosorbentsLorena Robles-Melchor0Maribel Cornejo-Mazón1Diana Maylet Hernández-Martínez2Gustavo F. Gutiérrez-López3Santiago García-Pinilla4Edgar Oliver López-Villegas5Darío Iker Téllez-Medina6Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Biofísica, Carpio y Plan de Ayala S/N Santo Tomás 11340, Ciudad de México, MexicoInstituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Biofísica, Carpio y Plan de Ayala S/N Santo Tomás 11340, Ciudad de México, MexicoInstituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Biofísica, Carpio y Plan de Ayala S/N Santo Tomás 11340, Ciudad de México, MexicoInstituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Ingeniería Bioquímica, Carpio y Plan de Ayala S/N Santo Tomás 11340, Ciudad de México, MexicoFacultad de Ingeniería de Alimentos, Fundación Universitaria Agraria de Colombia–Uniagraria, Calle 170 # 54a–10, C.P. 111166, Bogotá, ColombiaInstituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Investigación, Carpio y Plan de Ayala S/N 11340, Ciudad de México, MexicoInstituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Departamento de Ingeniería Bioquímica, Carpio y Plan de Ayala S/N Santo Tomás 11340, Ciudad de México, MexicoContamination of effluents with chemicals is a serious problem that impacts human health. Methylene blue is a cationic dye found frequently in industrial and urban sewages. In this work, dried grinded seeds and peels of nance were used as biosorbents in aqueous solutions at pH 7 and 10 (simulating urban and textile effluents) finding that Langmuir and Freundlich isotherms adequately described the sorption. Adsorption efficiencies were larger than 98% in all cases and slightly lower at pH 7 due to the closeness with the point of zero charge (pzc) of seeds and peels of nance (5.96 and 3.42, respectively). In all cases, Langmuir adsorption was favorable (RLa < 1), and Gibbs free energy of adsorption was negative indicating spontaneity, and since these values were larger than −80 but lower than 0 kJ/mol, the MB removal process was mainly due to physical interactions, a characteristic of physical adsorption. No significant differences were found amongst bulk mass transfer coefficients for the adsorption of both sorbents, indicating that both bioadsorbents had the same hydrodynamic and driving forces as well as depicted similar MB-adsorbent affinities. Interaction of MB with adsorbents was corroborated by FTIR spectroscopy, and the sorption was evidenced by scanning electron microscopy and image analysis which indicated that both adsorbents had fractal structures.http://dx.doi.org/10.1155/2021/5556940 |
| spellingShingle | Lorena Robles-Melchor Maribel Cornejo-Mazón Diana Maylet Hernández-Martínez Gustavo F. Gutiérrez-López Santiago García-Pinilla Edgar Oliver López-Villegas Darío Iker Téllez-Medina Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents Journal of Chemistry |
| title | Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents |
| title_full | Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents |
| title_fullStr | Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents |
| title_full_unstemmed | Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents |
| title_short | Removal of Methylene Blue from Aqueous Solutions by Using Nance (Byrsonima crassifolia) Seeds and Peels as Natural Biosorbents |
| title_sort | removal of methylene blue from aqueous solutions by using nance byrsonima crassifolia seeds and peels as natural biosorbents |
| url | http://dx.doi.org/10.1155/2021/5556940 |
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