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DC Field | Value | Language |
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dc.contributor.author | Vanegas Peña, Maria Eulalia | |
dc.contributor.author | Castro Tamay, Pablo Reinaldo | |
dc.contributor.author | Novoa, Néstor | |
dc.contributor.author | Arrué, Ramón | |
dc.contributor.author | Juela Quintuña, Diego Marcelo | |
dc.contributor.author | Cruzat Contreras, Christian Americo | |
dc.date.accessioned | 2022-03-07T19:24:16Z | - |
dc.date.available | 2022-03-07T19:24:16Z | - |
dc.date.issued | 2022 | |
dc.identifier.issn | 1566-2543, e 1572-8900 | |
dc.identifier.uri | https://www.scopus.com/record/display.uri?eid=2-s2.0-85118919809&origin=resultslist&sort=plf-f&src=s&st1=Potential+Biopolymer+Adsorbent+Functionalized&sid=a17eaa92736ad77438789126fcfc5bf3&sot=b&sdt=b&sl=60&s=TITLE-ABS-KEY%28Potential+Biopolymer+Adsorbent+Functionalized%29&relpos=3&citeCnt=1&searchTerm=#author-keywords | |
dc.description.abstract | In the present study, an adsorbent with a synergistic effect was developed from chitosan (CS) and Fe3O4 nanoparticles (Fe3O4 Nps) to remove Cr(VI) from aqueous solutions. The Fe3O4 Nps were synthesized by co-precipitation and were characterized by TEM. The CS/NPs composites were prepared by electrospinning technique and analyzed by SEM, FT-IR, DSC, and TGA. In the batch system, the influence of Fe3O4 Nps content, pH, contact time, Cr(VI) initial concentration, adsorbent dosage, and the temperature was investigated; the Cr(VI) concentration was determined using a colorimetric method by UV–Vis spectroscopy. The Fe3O4 Nps presented a quasi-spherical shape and an average size of 18 nm, with a low particle distribution. The SEM analysis reveals the presence of highly porous, interconnected micrometric structures. The optimal adsorption conditions were 1% load of Fe3O4 Nps by weight of CS, pH 3, 25 °C, and equilibrium was reached at just 9 min. Besides, the adsorption is favored by increasing Cr(VI) initial concentration and adsorbent dosage. The studies of reaction kinetics and adsorption equilibrium showed that the experimental data were better fitted to the Pseudo-second-order and Langmuir isotherm models, establishing monolayer formation and chemisorption. The maximum adsorption capacity of CS/ Fe3O4 Nps was 440.75 mg/g, which indicates a high affinity of the adsorbent for Cr(VI). Finally, a kinetic diffusion study established that intraparticle diffusion, and in particular surface diffusion, are important resistances in the transport of Cr(VI) from the liquid phase to the active site. | |
dc.language.iso | es_ES | |
dc.source | Journal of Polymers and the Environment | |
dc.subject | Chitosan | |
dc.subject | Fe3O4 nanoparticles | |
dc.subject | Cr (VI) removal | |
dc.subject | Metal adsorption | |
dc.title | Potential biopolymer adsorbent functionalized with Fe3O4 nanoparticles for the removal of Cr(VI) from aqueous solution | |
dc.type | ARTÍCULO | |
dc.ucuenca.idautor | 0103168118 | |
dc.ucuenca.idautor | 1104245657 | |
dc.ucuenca.idautor | 0000-0002-7167-2694 | |
dc.ucuenca.idautor | 0000-0001-6925-8702 | |
dc.ucuenca.idautor | 0302396718 | |
dc.ucuenca.idautor | 0107985681 | |
dc.identifier.doi | 10.1007/s10924-021-02323-y | |
dc.ucuenca.embargoend | 2023-06-30 | |
dc.ucuenca.version | Versión publicada | |
dc.ucuenca.embargointerno | 2023-06-30 | |
dc.ucuenca.areaconocimientounescoamplio | 05 - Ciencias Físicas, Ciencias Naturales, Matemáticas y Estadísticas | |
dc.ucuenca.afiliacion | Vanegas, M., Universidad de Cuenca, Facultad de Ciencias Químicas, Cuenca, Ecuador | |
dc.ucuenca.afiliacion | Castro, P., Universidad de Cuenca, Facultad de Ciencias Químicas, Cuenca, Ecuador | |
dc.ucuenca.afiliacion | Novoa, N., Universidad de Concepción, Concepción, Chile | |
dc.ucuenca.afiliacion | Arrué, R., Universidad de Concepción, Concepción, Chile | |
dc.ucuenca.afiliacion | Juela, D., Universidad de Cuenca, Facultad de Ciencias Químicas, Cuenca, Ecuador | |
dc.ucuenca.afiliacion | Cruzat, C., Universidad de Cuenca, Facultad de Ciencias Químicas, Cuenca, Ecuador | |
dc.ucuenca.correspondencia | Vanegas Peña, Maria Eulalia, eulalia.vanegas@ucuenca.edu.ec | |
dc.ucuenca.volumen | Volumen 30, número 5 | |
dc.ucuenca.indicebibliografico | SCOPUS | |
dc.ucuenca.factorimpacto | 0.648 | |
dc.ucuenca.cuartil | Q1 | |
dc.ucuenca.numerocitaciones | 0 | |
dc.ucuenca.areaconocimientofrascatiamplio | 1. Ciencias Naturales y Exactas | |
dc.ucuenca.areaconocimientofrascatiespecifico | 1.4 Ciencias Químicas | |
dc.ucuenca.areaconocimientofrascatidetallado | 1.4.4 Ciencia de Los Polímeros | |
dc.ucuenca.areaconocimientounescoespecifico | 052 - Medio Ambiente | |
dc.ucuenca.areaconocimientounescodetallado | 0521 - Ciencias Ambientales | |
dc.ucuenca.urifuente | https://www.springer.com/journal/10924/ | |
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