Adsorption of caesium $(Cs^{+})$ from aqueous solution by porous titanosilicate xerogels
PBN-AR
Instytucja
Wydział Inżynierii Materiałowej i Ceramiki (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Desalination and Water Treatment
ISSN
1944-3994
EISSN
1944-3986
Wydawca
Taylor and Francis Inc.
Rok publikacji
2016
Numer zeszytu
12
Strony od-do
5554--5566
Numer tomu
57
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.92
Autorzy
(liczba autorów: 6)
Pozostali autorzy
+ 5
Słowa kluczowe
EN
kinetic study
adsorption capacity
xerogel pore structure
synthesis precursor
titanosilicates
Streszczenia
Język
EN
Treść
Two types of titanosilicate (TiSi) materials were synthesized by the sol–gel method using pure and technical precursors. All samples obtained were characterized using X-ray diffraction, FTIR in the mid-region and the low-temperature nitrogen adsorption/desorption technique. The synthesized xerogels were found to be amorphous with a developed porous structure. Solution pH, sample mass, initial Cs+ concentration, competitive ions, contact time and temperature were studied for their influence on TiSi sorption ability. Both samples demonstrated a high capacity for caesium across a broad pH range of 2–12, and the adsorption isotherms were fitted to the Langmuir, Freundlich, Sips, Toth and Redlich–Peterson models, while the kinetic data were described using pseudo-first and pseudo-second models. All the TiSi samples were characterized by X-ray photoelectron spectroscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy before and after the adsorption tests. Activated adsorption was proposed as a stage in the adsorption mechanism.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:099321
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