Application of nickel ferrite nanoparticles in adsorption of amoxicillin antibiotic
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Universidade Federal de Minas Gerais
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Artigo de periódico
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Membros da banca
Resumo
According to the World Health Organization, amoxicillin (AMX) is the most widely
consumed antibiotic in the world. Consequently, there is great interest in the development of new
technologies that allow the removal of this type of contaminant, as exposure to antibiotic residues
can cause a variety of adverse effects, such as toxicity and antimicrobial resistance. In this work,
AMX adsorption from aqueous solution was investigated using nickel ferrite nanoparticles. The
nanoadsorbents were prepared by the coprecipitation method, annealed at 300 to 700 °C, and
characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Mössbauer
spectroscopy (ME) and vibratory sample magnetometry (VSM). Nanoparticle size, pH and
temperature were found to significantly affect the amount of adsorbed AMX. The pseudo-second
order kinetic model described the adsorption process and the adsorption isotherm fitted to the
Freundlich model. AMX adsorption capacity was 104-45 mg g−1 (miligram of AMX per gram of
ferrite) for ferrite annealed at 300-700 °C, respectively. The nanoadsorbents employed showed
higher AMX removal efficiency when compared to other iron oxides. Moreover, the good reuse
results obtained showed their great potential for antibiotic removal by adsorption.
Abstract
Assunto
Ferrita, Adsorção
Palavras-chave
Ferrite, Adsorption, Amoxicillin, Beta-lactam
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Endereço externo
https://www.scielo.br/j/jbchs/i/2020.v31n12/