Uranium adsorption studies on aminopropyl modified mesoporous sorbent (NH2-MCM-41) using statistical design method
Küçük Resim Yok
Tarih
2010
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
MCM-41 has been synthesized and modified in order to graft amine groups on its surface. The modified NH2-MCM-41 adsorbent was characterized by using XRD, SEM, surface area and porosity analyzer, and FT-IR. This characterized adsorbent was investigated for uranium adsorption using the batch method. The central composite design (CCD) combined with the response surface methodology (RSM) was selected to determine the effects of parameters and their interactions for the removal of UO22+ ions. The optimum values of the parameters determined were 4.2 for the initial pH, 60 degrees C for the temperature, 90 mg L-1 for the initial concentration and 173 min for the shaking time using the response surface methodology. Delta H degrees and Delta S degrees were calculated from the slope and the intercept of plots of In K-d versus 1/T. The isotherm models, Langmuir, Freundlich, Dubinin-Radushkevich (D-R) have been studied to explain the adsorption characteristics. (C) 2010 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Kaynak
Journal of Nuclear Materials
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
406
Sayı
3
