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Adsorption of cephalexin in aqueous media by graphene oxide: kinetics, isotherm, and thermodynamics

by Shimabuku-Biadola, Quelen Leticia , Bergamasco, Rosângela , dos Santos, Tássia Rhuna Tonial , Silva, Marcela Fernandes , Fagundes-Klen, Marcia Regina , Wernke, Gessica

in Adsorption / Antibiotics / Aquatic Pollution / Aqueous solutions / Atmospheric Protection/Air Quality Control/Air Pollution / Cephalexin / Cephalexin - chemistry / Cephalexin - metabolism / Earth and Environmental Science / Ecotoxicology / Environment / Environmental Chemistry / Environmental Health / Environmental science / Graphene / graphene oxide / Graphite - chemistry / Isotherms / Kinetics / Morphology / Reaction kinetics / Research Article / Scanning electron microscopy / sorption isotherms / Thermodynamics / Transmission electron microscopy / Waste Water Technology / Water Management / Water Pollutants, Chemical / Water Pollution Control / Zeta potential

2020

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Adsorption of cephalexin in aqueous media by graphene oxide: kinetics, isotherm, and thermodynamics

by Shimabuku-Biadola, Quelen Leticia , Bergamasco, Rosângela , dos Santos, Tássia Rhuna Tonial , Silva, Marcela Fernandes , Fagundes-Klen, Marcia Regina , Wernke, Gessica

2020

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Adsorption of cephalexin in aqueous media by graphene oxide: kinetics, isotherm, and thermodynamics

by Shimabuku-Biadola, Quelen Leticia , Bergamasco, Rosângela , dos Santos, Tássia Rhuna Tonial , Silva, Marcela Fernandes , Fagundes-Klen, Marcia Regina , Wernke, Gessica

2020

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Journal Article

Adsorption of cephalexin in aqueous media by graphene oxide: kinetics, isotherm, and thermodynamics

Shimabuku-Biadola, Quelen Leticia,

Bergamasco, Rosângela,

dos Santos, Tássia Rhuna Tonial,

Silva, Marcela Fernandes,

Fagundes-Klen, Marcia Regina,

Wernke, Gessica

2020

Overview

The present study proposes the synthesis and characterization of graphene oxide (GO) and its application in the adsorption of the antibiotic cephalexin (CFX) in aqueous solution. The characterization of graphene oxide was obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and zeta potential. The influence of pH on the batch adsorption process was investigated by analysing adsorption equilibrium isotherms and adsorption kinetics. The images obtained by SEM and TEM presented the typical morphology attributed to GO sheets. The kinetic adsorption tests showed that equilibrium was reached in 420 min, and an adsorption capacity of 164 mg g −1 was obtained. The models that best fit the experimental data were pseudo-second as well as the Langmuir isotherm. Therefore, GO was effective for removing the CFX antibiotic from aqueous solution by using a batch adsorption process.

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Publisher

Springer Berlin Heidelberg,Springer Nature B.V

Subject

/ Atmospheric Protection/Air Quality Control/Air Pollution

/ Cephalexin

/ Cephalexin - chemistry