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Use of bone char prepared from an invasive species, pleco fish (Pterygoplichthys spp.), to remove fluoride and Cadmium(II) in water

Medellín Castillo, Nahum Andres | Cruz Briano, Sergio Armando [autor/a] | Leyva Ramos, Roberto [autor/a] | Moreno Piraján, Juan Carlos [autor/a] | Torres Dosal, Arturo [autor/a] | Giraldo Gutierréz, Liliana [autor/a] | Labrada Delgado, Gladis Judith [autor/a] | Pérez, Raul Ocampo [autor/a] | Rodriguez Estupiñan, Jenny Paola [autor/a] | Reyes Lopez, Simon Yobanny [autor/a] | Berber Mendoza, María Selene [autor/a].
Tipo de material: Artículo en línea Artículo en línea Tema(s): Pterygoplichthys | Peces | Hueso carbonizado | Propiedades fisicoquímicas | Cadmio | Fluoruros | Impacto ambientalTema(s) en inglés: Pterygoplichthys | Fishes | Bone char | Chemicophysical properties | Cadmium | Fluorides | Environmental impactDescriptor(es) geográficos: Tenosique (Tabasco, México) | Río Usumacinta Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Environmental Management. volumen 256, art. número 109956 (February 2020), páginas 1-10. --ISSN: 0301-4797Número de sistema: 59750Resumen:
Inglés

In this study, bone char (BC) from pleco fish (Pterygoplichthys spp.) was synthesized, and their textural and physicochemical properties, as well as its adsorption capacity towards fluoride and Cd(II) from single and binary aqueous solutions, were determined. The results showed that the properties of the BCs were independent of the type of bone used and the surface areas were close to 110 m² g−¹. The effect of solution pH revealed that the adsorption capacity of BC towards fluoride from water raised by decreasing the solution pH. This trend was attributed to the electrostatic interaction between the positively charged surface and the fluoride in aqueous solution. On the contrary, the capacity of BC for adsorbing Cd(II) was enhanced by increasing the solution pH, indicating that electrostatic interactions were also essential but with a contrary effect in comparison with fluoride adsorption due to the negatively charged surface at pH above the point zero charge (pHPZC = 8.16). The experimental data for binary adsorption of fluoride and Cd(II) were interpreted satisfactorily using the modified Freundlich multicomponent isotherm (EFMI), and the experimental data revealed that Cd(II) have an antagonistic effect on the adsorption of fluoride, whereas the presence of fluoride does not affect the capacity of BC for adsorbing Cd(II). Thermogravimetric, XRD diffraction and IR spectroscopy analysis corroborated that the adsorption of fluoride in BC is due to electrostatic attractions, ion exchange or chemisorption and physisorption. Besides, the removal of Cd(II) occurs by physical adsorption and ion exchange. It was concluded that BC is an alternative material for the removal of fluoride and Cd(II) from aqueous solutions, and it is a possible application for using the bones of this invasive fish species.

Recurso en línea: https://www.sciencedirect.com/science/article/pii/S0301479719316743?via%3Dihub
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Disponible para usuarios de ECOSUR con su clave de acceso

In this study, bone char (BC) from pleco fish (Pterygoplichthys spp.) was synthesized, and their textural and physicochemical properties, as well as its adsorption capacity towards fluoride and Cd(II) from single and binary aqueous solutions, were determined. The results showed that the properties of the BCs were independent of the type of bone used and the surface areas were close to 110 m² g−¹. The effect of solution pH revealed that the adsorption capacity of BC towards fluoride from water raised by decreasing the solution pH. This trend was attributed to the electrostatic interaction between the positively charged surface and the fluoride in aqueous solution. On the contrary, the capacity of BC for adsorbing Cd(II) was enhanced by increasing the solution pH, indicating that electrostatic interactions were also essential but with a contrary effect in comparison with fluoride adsorption due to the negatively charged surface at pH above the point zero charge (pHPZC = 8.16). The experimental data for binary adsorption of fluoride and Cd(II) were interpreted satisfactorily using the modified Freundlich multicomponent isotherm (EFMI), and the experimental data revealed that Cd(II) have an antagonistic effect on the adsorption of fluoride, whereas the presence of fluoride does not affect the capacity of BC for adsorbing Cd(II). Thermogravimetric, XRD diffraction and IR spectroscopy analysis corroborated that the adsorption of fluoride in BC is due to electrostatic attractions, ion exchange or chemisorption and physisorption. Besides, the removal of Cd(II) occurs by physical adsorption and ion exchange. It was concluded that BC is an alternative material for the removal of fluoride and Cd(II) from aqueous solutions, and it is a possible application for using the bones of this invasive fish species. eng

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