Title

HYDROPHOBIC ORGANOSILICA ADSORBENTS FOR REMOVAL OF SODIUM DICLOFENAC FROM AQUEOUS SOLUTIONS

Authorship

Reisr, Glaydson Simões dos; Sampaior, Carlos Hoffmann; Lima, Eder Claudio; Castro, Amilton Feliciano; Brum, Irineu Antônio Schadach de

Reisr, Glaydson Simões dos

I am this author

Sampaior, Carlos Hoffmann

I am this author

Lima, Eder Claudio

I am this author

Castro, Amilton Feliciano

I am this author

Brum, Irineu Antônio Schadach de

I am this author

DOI

10.5151/1516-392X-27786

Downloads

Abstract

Micropore organosilicas (MOs) were synthesized using methyl-phenyl-polysiloxane as precursor. The MOs were characterized using several analytical and functional techniques. The materials were assigned as micropores materials, with specific surface area up to 642 m2 g-1 and yield up to 72.55%. The adsorbents have hydrophobic surfaces and were used for removal of diclofenac from aqueous solutions. The adsorption kinetic and isothermal data were well described by the general order and Sips models, respectively. Diclofenac exhibited a better affinity than NM and the mechanism of adsorption suggested that hydrophobic groups play a key role in the adsorption process.

Keywords

Methyl-phenyl-polysiloxane, Organosilica adsorbents, Hydrophobic surfaces, Kinetic and isotherm models, Pharmaceuticals adsorption

Pharmaceuticals adsorption