Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system

Sema Akyil; Mahmoud A.A. Aslani; Şule Aytaş

doi:10.1016/S0925-8388(98)00204-7

Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system

Sema Akyil^*, Mahmoud A.A. Aslani, Şule Aytaş

^*Bu çalışma için yazışmadan sorumlu yazar

Ege University

Araştırma sonucu: ???type-name??? › Makale › bilirkişi

33 Atıf (Scopus)

Özet

The sorption of U(VI) from aqueous solutions on zeolite X has been studied by a batch technique. Distribution coefficients (K_d) were determined for sorption systems as a function of sorbate concentration, pH, contact time and temperature. The sorption isotherm was formed according to the Langmuir isotherm. Thermodynamic parameters have been determined at different temperatures. The ΔH° values for U(VI) on zeolite X were -29.5147 kJ mol^-1 at 313 K at pH 3 and -19.8705 kJ mol^-1 at 303 K at pH 9. The sorption of U(VI) on zeolite X is an exothermic in nature. Negative values of ΔG° show the spontaneous values for U(VI) that become less negative at higher temperatures, which shows that sorption is less favoured at higher temperatures.

Orijinal dil	İngilizce
Sayfa (başlangıç-bitiş)	769-773
Sayfa sayısı	5
Dergi	Journal of Alloys and Compounds
Hacim	271-273
DOI'lar	https://doi.org/10.1016/S0925-8388(98)00204-7
Yayın durumu	Yayınlandı - 12 Haz 1998
Harici olarak yayınlandı	Evet

Belgeye Erişim

10.1016/S0925-8388(98)00204-7

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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title = "Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system",

abstract = "The sorption of U(VI) from aqueous solutions on zeolite X has been studied by a batch technique. Distribution coefficients (Kd) were determined for sorption systems as a function of sorbate concentration, pH, contact time and temperature. The sorption isotherm was formed according to the Langmuir isotherm. Thermodynamic parameters have been determined at different temperatures. The ΔH° values for U(VI) on zeolite X were -29.5147 kJ mol-1 at 313 K at pH 3 and -19.8705 kJ mol-1 at 303 K at pH 9. The sorption of U(VI) on zeolite X is an exothermic in nature. Negative values of ΔG° show the spontaneous values for U(VI) that become less negative at higher temperatures, which shows that sorption is less favoured at higher temperatures.",

keywords = "Adsorption isotherms, Uranium adsorption, Zeolite, Zeolite X",

author = "Sema Akyil and Aslani, {Mahmoud A.A.} and {\c S}ule Ayta{\c s}",

year = "1998",

month = jun,

day = "12",

doi = "10.1016/S0925-8388(98)00204-7",

language = "English",

volume = "271-273",

pages = "769--773",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system

AU - Akyil, Sema

AU - Aslani, Mahmoud A.A.

AU - Aytaş, Şule

PY - 1998/6/12

Y1 - 1998/6/12

N2 - The sorption of U(VI) from aqueous solutions on zeolite X has been studied by a batch technique. Distribution coefficients (Kd) were determined for sorption systems as a function of sorbate concentration, pH, contact time and temperature. The sorption isotherm was formed according to the Langmuir isotherm. Thermodynamic parameters have been determined at different temperatures. The ΔH° values for U(VI) on zeolite X were -29.5147 kJ mol-1 at 313 K at pH 3 and -19.8705 kJ mol-1 at 303 K at pH 9. The sorption of U(VI) on zeolite X is an exothermic in nature. Negative values of ΔG° show the spontaneous values for U(VI) that become less negative at higher temperatures, which shows that sorption is less favoured at higher temperatures.

AB - The sorption of U(VI) from aqueous solutions on zeolite X has been studied by a batch technique. Distribution coefficients (Kd) were determined for sorption systems as a function of sorbate concentration, pH, contact time and temperature. The sorption isotherm was formed according to the Langmuir isotherm. Thermodynamic parameters have been determined at different temperatures. The ΔH° values for U(VI) on zeolite X were -29.5147 kJ mol-1 at 313 K at pH 3 and -19.8705 kJ mol-1 at 303 K at pH 9. The sorption of U(VI) on zeolite X is an exothermic in nature. Negative values of ΔG° show the spontaneous values for U(VI) that become less negative at higher temperatures, which shows that sorption is less favoured at higher temperatures.

KW - Adsorption isotherms

KW - Uranium adsorption

KW - Zeolite

KW - Zeolite X

UR - http://www.scopus.com/inward/record.url?scp=0032094115&partnerID=8YFLogxK

U2 - 10.1016/S0925-8388(98)00204-7

DO - 10.1016/S0925-8388(98)00204-7

M3 - Article

AN - SCOPUS:0032094115

SN - 0925-8388

VL - 271-273

SP - 769

EP - 773

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Distribution of uranium on zeolite X and investigation of thermodynamic parameters for this system

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