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Papers by ali bagheri
Applied Radiation and Isotopes
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.
Radiation Physics and Chemistry, 2003
The effect of various doses of gamma radiation on the ion-exchange capacity, distribution coeffic... more The effect of various doses of gamma radiation on the ion-exchange capacity, distribution coefficient values, elution behaviour, physical effect, pH titration and infrared spectra of some synthetic inorganic ion exchangers, namely the cerium substituted phosphates; and naturally occurring inorganic ion exchangers, zeolites from different parts of Iran, have been studied systematically.
Radiation Physics and Chemistry, 2006
A description of the preparation and properties of an H + form of cerium (IV) molybdate ion excha... more A description of the preparation and properties of an H + form of cerium (IV) molybdate ion exchanger prepared at different pH values is given. The material was characterized by inductively coupled plasma (ICP) elemental analysis, IR spectrometry and thermo-gravimetry and titration curve analysis; its composition was found to be Ce(OH) 2 (H-MoO 4 ) 2 ?nH 2 O. It was also observed that the exchange capacity of the ion exchanger depends upon the pH value of the ceric solutions used and its value was lowered after gamma irradiation. Furthermore, the absorption of 99 Mo and the distribution coefficient of this ion exchanger for Mg(II), Ba(II), Ca(II), Ni(II), Mo(VI), Cr(VI) and Th(IV) were investigated. It was found that cerium (IV) molybdate had the highest absorption for Th(IV) and Ba(II), while Mg(II) and Ca(II) showed the lowest absorption, respectively. Finally, gamma irradiation, in general, lowered the absorption of the cations being investigated in this study. r
Applied Radiation and Isotopes, 2006
The adsorption behaviour of Ba(lI) on titanium(IV) oxide in an aqueous solution was studied by me... more The adsorption behaviour of Ba(lI) on titanium(IV) oxide in an aqueous solution was studied by means of batch technique as a function of Ba(ll) concentration, temperature and solution pH using Ba-140 as radiotracer. The results show that adsorption is essentially complete in ca 2 h and that the steady state values of adsorption at various concentrations agree well with the classical Freundlich isotherm and follow first order kinetics. The pH and temperature of the solution markedly affect the extent of adsorption. The nature and mechanism of adsorption are discussed.
Applied Radiation and Isotopes
This article appeared in a journal published by Elsevier. The attached copy is furnished to the a... more This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.
Radiation Physics and Chemistry, 2003
The effect of various doses of gamma radiation on the ion-exchange capacity, distribution coeffic... more The effect of various doses of gamma radiation on the ion-exchange capacity, distribution coefficient values, elution behaviour, physical effect, pH titration and infrared spectra of some synthetic inorganic ion exchangers, namely the cerium substituted phosphates; and naturally occurring inorganic ion exchangers, zeolites from different parts of Iran, have been studied systematically.
Radiation Physics and Chemistry, 2006
A description of the preparation and properties of an H + form of cerium (IV) molybdate ion excha... more A description of the preparation and properties of an H + form of cerium (IV) molybdate ion exchanger prepared at different pH values is given. The material was characterized by inductively coupled plasma (ICP) elemental analysis, IR spectrometry and thermo-gravimetry and titration curve analysis; its composition was found to be Ce(OH) 2 (H-MoO 4 ) 2 ?nH 2 O. It was also observed that the exchange capacity of the ion exchanger depends upon the pH value of the ceric solutions used and its value was lowered after gamma irradiation. Furthermore, the absorption of 99 Mo and the distribution coefficient of this ion exchanger for Mg(II), Ba(II), Ca(II), Ni(II), Mo(VI), Cr(VI) and Th(IV) were investigated. It was found that cerium (IV) molybdate had the highest absorption for Th(IV) and Ba(II), while Mg(II) and Ca(II) showed the lowest absorption, respectively. Finally, gamma irradiation, in general, lowered the absorption of the cations being investigated in this study. r
Applied Radiation and Isotopes, 2006
The adsorption behaviour of Ba(lI) on titanium(IV) oxide in an aqueous solution was studied by me... more The adsorption behaviour of Ba(lI) on titanium(IV) oxide in an aqueous solution was studied by means of batch technique as a function of Ba(ll) concentration, temperature and solution pH using Ba-140 as radiotracer. The results show that adsorption is essentially complete in ca 2 h and that the steady state values of adsorption at various concentrations agree well with the classical Freundlich isotherm and follow first order kinetics. The pH and temperature of the solution markedly affect the extent of adsorption. The nature and mechanism of adsorption are discussed.