| Literature DB >> 31845249 |
Gessica Wernke1, Quelen Leticia Shimabuku-Biadola2, Tássia Rhuna Tonial Dos Santos1, Marcela Fernandes Silva1, Marcia Regina Fagundes-Klen3, Rosângela Bergamasco1.
Abstract
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.Entities:
Keywords: Adsorption; Antibiotic cephalexin; Characterization; Graphene oxide; Water treatment
Mesh：
Substances：
Year: 2019 PMID： 31845249 DOI： 10.1007/s11356-019-07146-y
Source DB: PubMed Journal: Environ Sci Pollut Res Int ISSN： 0944-1344 Impact factor: 4.223