Adsorption of ceftazidime from aqueous solution by multi-walled carbon nanotubes

• Autorzy: Zhang H. , Hu X.
• Języki publikacji: EN

Abstrakty

EN

Antibiotic contamination of water has become a problem that cannot be ignored. However, existing water treatment technologies at home and abroad couldn’t remove the antibiotics efficiently in the water environment. Our study investigated the adsorption of ceftazidime in aqueous solutions by multiwall carbon nanotubes (MWCNTs), and examined the impact of such factors as pH value, ion strength, and concentration of organic matter on the adsorption process. The results showed that, when the dosage of MWCNTs was 1.6 g/L and the initial concentration of ceftazidime was 30 mg/L, the removal rate of the ceftazidime came up to 80-90%. The pH value of solution, the ion strength, and organic concentrations showed minimal or negligible impacts. The Freundlich isotherm fit the adsorption well. Kinetic analysis was conducted using models. The regression results showed that the adsorption kinetics were accurately represented by the pseudo-second order model (R²>0.99). Based on the pseudo-second order model, the equilibrium adsorption capacity of MWCNTs was 14.79 mg/g.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2015
• Tom: 24
• Numer: 5
• Opis fizyczny: p.2285-2293,fig.,ref.

Twórcy

autor

Zhang H.

• College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R.China

autor

Hu X.

• College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P.R.China

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Identyfikatory

DOI

10.15244/pjoes/41537