- Tytuł:
- Adsorption of Ni2+ from aqueous solution by magnetic Fe@graphite nano-composite
- Autorzy:
-
Konicki, W.
Pelka, R.
Arabczyk, W. - Powiązania:
- https://bibliotekanauki.pl/articles/778219.pdf
- Data publikacji:
- 2016
- Wydawca:
- Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
- Tematy:
-
magnetic nanocomposite
iron nanoparticles
nickel
adsorption - Opis:
- The removal of Ni2+ from aqueous solution by iron nanoparticles encapsulated by graphitic layers (Fe@G) was investigated. Nanoparticles Fe@G were prepared by chemical vapor deposition CVD process using methane as a carbon source and nanocrystalline iron. The properties of Fe@G were characterized by X-ray Diffraction method (XRD), High-Resolution Transmission Electron Microscopy (HRTEM), Fourier Transform-Infrared Spectroscopy (FTIR), BET surface area and zeta potential measurements. The effects of initial Ni2+ concentration (1–20 mg L−1 ), pH (4–11) and temperature (20–60°C) on adsorption capacity were studied. The adsorption capacity at equilibrium increased from 2.96 to 8.78 mg g−1 , with the increase in the initial concentration of Ni2+ from 1 to 20 mg L−1 at pH 7.0 and 20°C. The experimental results indicated that the maximum Ni2+ removal could be attained at a solution pH of 8.2 and the adsorption capacity obtained was 9.33 mg g−1 . The experimental data fitted well with the Langmuir model with a monolayer adsorption capacity of 9.20 mg g−1 . The adsorption kinetics was found to follow pseudo-second-order kinetic model. Thermodynamics parameters, ΔHO, ΔGO and ΔSO, were calculated, indicating that the adsorption of Ni2+ onto Fe@G was spontaneous and endothermic in nature.
- Źródło:
-
Polish Journal of Chemical Technology; 2016, 18, 4; 96-103
1509-8117
1899-4741 - Pojawia się w:
- Polish Journal of Chemical Technology
- Dostawca treści:
- Biblioteka Nauki
Artykuł