GADOLINIUM SORPTION ON MULTI-WALLED CARBON NANOTUBES | Zendy

Danijela D. Maksin | Zendy; Marija Vukčević | Zendy; Tatjana Đurkić | Zendy; Ivana Stanišić | Zendy; Tamara Bakić | Zendy; Milena Radomirović | Zendy; Antonije Onjia | Zendy

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GADOLINIUM SORPTION ON MULTI-WALLED CARBON NANOTUBES

Author(s) -

Danijela D. Maksin,

Marija Vukčević,

Tatjana Đurkić,

Ivana Stanišić,

Tamara Bakić,

Milena Radomirović,

Antonije Onjia

Publication year - 2019

Publication title -

contemporary materials

Language(s) - English

Resource type - Journals

eISSN - 1986-8677

pISSN - 1986-8669

DOI - 10.7251/comen1901035m

Subject(s) - sorption , gadolinium , freundlich equation , carbon nanotube , langmuir , aqueous solution , materials science , lanthanide , kinetics , carbon fibers , chemical engineering , thermodynamics , chemistry , nanotechnology , adsorption , organic chemistry , metallurgy , composite material , ion , physics , quantum mechanics , composite number , engineering

Rare earth metals are deemed to be the materials of future due to their numerous applications including medical diagnostics, nuclear facilities, petroleum industry, etc. In this paper, multi-walled carbon nanotubes, which possess unique physicochemical properties, were evaluated as sorbents for lanthanoid gadolinium from aqueous solutions. The pH-dependent sorption behavior of Gd was studied in the pH range from 3 to 11 at room temperature (298 K). Equilibrium data over a range of initial Gd concentrations of 5−50 mg L−1 was analyzed with Langmuir, Freundlich and Redlich-Peterson models. Sorption kinetics was fitted with the pseudo-first-order, the pseudo-second-order and fractional power kinetic models.

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