Kinetic and equilibrium studies on adsorption of Reactive Blue 19 dye from aqueous solutions by nanohydroxyapatite adsorbent

• Autorzy: Ciobanu G. , Barna S. , Harja M.

Identyfikatory

DOI

10.1515/aep-2016-0014

• Języki publikacji: EN

Abstrakty

EN

In the present study the adsorption of Reactive Blue 19 dye on the hydroxyapatite (HAp) nanopowders was investigated. The batch adsorption experiments were performed by monitoring the adsorbent dosage, contact time, dye solution concentration, pH and temperature. At pH 3 and 20ºC, high dye removal rates of about 95.58% and 86.95% for the uncalcined and calcined nanohydroxyapatites, respectively, were obtained. The kinetic studies indicated the dye adsorption onto nanohydroxyapatite samples to follow a pseudo-second order model. The Langmuir isotherm was found to be the best to represent the equilibrium with experimental data. The maximum adsorption capacity of uncalcined and calcined nanohydroxyapatite samples has been found to be 90.09 mg/g and 74.97 mg/g, respectively.

Słowa kluczowe

EN

Reactive Blue 19 dye; hydroxyapatite; adsorption

• Wydawca: Institute of Environmental Engineering, Polish Academy of Sciences
• Czasopismo: Archives of Environmental Protection
• Rocznik: 2016
• Tom: Vol. 42, no. 2
• Strony: 3--11
• Opis fizyczny: Bibliogr. 32 poz., fot., tab., wykr.

Twórcy

autor

Ciobanu G.

• Gheorghe Asachi Technical University of Iasi, Romania Faculty of Chemical Engineering and Environmental Protection

autor

Barna S.

• Gheorghe Asachi Technical University of Iasi, Romania Faculty of Chemical Engineering and Environmental Protection

autor

Harja M.

• Gheorghe Asachi Technical University of Iasi, Romania Faculty of Chemical Engineering and Environmental Protection

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.