Kinetic study of removal heavy metal from aqueous solution using the synthetic aluminum silicate
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Date
Authors
MENA ULECIA, KAREL
Treto-Suárez, Manuel Alejandro
Prieto-García, Julio Omar
Mollineda-Trujillo, Ángel
Lamazares, Emilio
Hidalgo-Rosa, Yoan
Mena-Ulecia, Karel
Treto-Suárez, Manuel Alejandro
Prieto-García, Julio Omar
Mollineda-Trujillo, Ángel
Lamazares, Emilio
Hidalgo-Rosa, Yoan
Mena-Ulecia, Karel
Authors
Date
Datos de publicación:
10.1038/s41598-020-67720-0
Keywords
Adsorción - Silicato de aluminio - Cinética - Metales pesados - Tratamiento de aguas residuales - Intercambio iónico.
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Abstract
One of the problems that most affect humanity today is the wastewater discharge into different water bodies. It was estimated that more than 7 million tons of wastewater are generated worldwide and are discharged into rivers, lakes, and reservoirs. Among the most dangerous wastewaters are those from inorganic chemistry research laboratories, mainly due to heavy metals. These problems have become a highly relevant topic, and numerous researchers have tried to design wastewater treatment systems that will deal more efficiently with heavy metals elimination. In this work, the synthesis, characterization, and evaluation of hydrated aluminium silicate were performed as alternative wastewater treatment from chemistry research and teaching laboratories. The compound obtained was Al<inf>2</inf>O<inf>3</inf>3 SiO<inf>2</inf>H<inf>2</inf>O, which was characterized by the determination of its physicochemical properties. These revealed a low density, very porous material, with low crystallinity, strong chemical resistance, a large surface area, and a high apparent ionic exchange capacity. Absorption kinetics studies of heavy metals in aqueous solutions, through more widespread models, have demonstrated that Al<inf>2</inf>O<inf>3</inf>3 SiO<inf>2</inf>H<inf>2</inf>O has excellent properties as absorbents of this material. The amorphous hydrated aluminium silicate achieves a decrease in the concentration of all the metal ions studied, reducing them to discharge levels permissible. © 2020 Elsevier B.V., All rights reserved.
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Keywords
Adsorción , Silicato de aluminio , Cinética , Metales pesados , Tratamiento de aguas residuales , Intercambio iónico.
Citation
10.1038/s41598-020-67720-0