The adsorption mechanism of Al(III) and Fe(III) ions on bastnaesite surfaces

• Autorzy: Cao Shiming , Cao Yijun , Ma Zilong , Liao Yinfei

Identyfikatory

DOI

10.5277/ppmp18113

• Języki publikacji: EN

Abstrakty

EN

The adsorption mechanism of Al(III) and Fe(III) ions on bastnaesite surfaces was investigated by a combination of DFT calculation, XPS analysis, adsorption isotherm study and adsorption kinetic investigations. DFT calculation results indicated that ≡CeOH0 and ≡CO3H0 are primary functional groups on bastnaesite surfaces. XPS analysis reveals that Al(III) and Fe(III) ions adsorbed onto the bastnaesite surfaces through the interaction between aluminium/iron hydroxide species and oxygen atoms of surface ≡CeOH0 groups. No interaction between aluminium/iron hydroxide species and ≡CO3H0 groups was detected. Adsorption isotherm studies demonstrated that the adsorption data of Al(III) and Fe(III) ions is fitted relatively well by Freundlich equations, the adsorption kinetic characteristics fitted to pseudo-second order model. Freundlich constants suggested favorable process for Al(III) and Fe(III) ions adsorption, and each adsorbed metal hydroxide specie complex with at least two oxygen atoms of surface ≡CeOH0 groups.

Słowa kluczowe

EN

Al(III); Fe(III); bastnaesite; adsorption

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 1
• Strony: 97--107
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Cao Shiming

• School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, China

autor

Cao Yijun

• National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, China.

autor

Ma Zilong

• National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, China.

autor

Liao Yinfei

• National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou, China.

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).