Breakthrough and thermodynamic adsorption of Cr (VI) y Ni (II) bioadsorption in continuous system

Scientia et Technica Journal

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Title Breakthrough and thermodynamic adsorption of Cr (VI) y Ni (II) bioadsorption in continuous system
Creator Tejada Tovar, Candelaria Nahir
Newball López, Luis Carlos
Cardona Lara, Camilo Esteban
Description The removal of heavy metals present in water is an issue of environmental interest, due to bioaccumulation, biomagnification and the carcinogenic and mutagenic effects on living beings. The objective of the present study was to use plantain peel residues in Chromium (VI) and Nickel (II) removal in continuous system, evaluating the effect of bed height, temperature and adsorbent particle size on the process; obtaining a 98.7% 99.71% removal yield for Cr (VI) and Ni (II), respectively. The FTIR showed that the bioadsorbent has a heterogeneous structure with the presence of hydroxyl groups, saturated and unsaturated hydrocarbons, carbonyls, carboxyl, among others, and it was established that the process is controlled by electrostatic reactions between the active centers and the metal. The breakage curve was carried out under the optimal conditions established by the Response Surface Methodology (RSM) and it was established that the bioadsorbent has an extensive useful life, as it was not saturated throughout the process. The thermodynamic parameters established that the process is exothermic and irreversible, being favored at room temperature. Taking into account the behavior of plantain peels during the breakage curve, it is recommended to use it as a filler in a packed bed to remove Cr (VI) and Ni (II).
Publisher Universidad Tecnológica de Pereira
Date 2021-03-30
Type info:eu-repo/semantics/article
Format application/pdf
Source Scientia et Technica; Vol 26 No 1 (2021): Enero-Marzo 2021; 72-81
Scientia et Technica; Vol. 26 Núm. 1 (2021): Enero-Marzo 2021; 72-81
Language eng
Rights Derechos de autor 2021 Scientia et technica

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