Sorption of rhenium on alumina under dynamic conditions
Апстракт
The sorption of perrhenate anion on alumina from aqueous solutions of sodium chloride was investigated under dynamic conditions. The initial concentrations of rhenium were in the range of 2.7 x 10(-2)-2.7 mmol/dM(3). The breakthrough curves as the function of Re and NaCl concentrations (0. 12-0.20 mol/dm(3)), pH 2-6 and flow rate 3-10 ml/min were determined. According to the experimental results, it was concluded that the breakthrough capacities, the capacities at c/c(0) = 0.5, the total column capacities and the utilization degrees (column efficiency) increase with increasing Re and NaCl concentrations and decreasing pH. The optimal flow rate was found to be 3 ml/min. At pH 2 and c(0) = 2.7 mmol Re/dm(3), the total capacity was found to be Q(0.9) (max) = 2.1 x 10(-2) mmol Re/g Al2O3. The data for perrhenate anions fit with a Henry-type isotherm. It was found that, under the above mentioned conditions, the value of the Henry constant K-H was 7.8 x 10(-3) dm(3)/g and the Gibbs energy ch...ange, Delta G was -0.5 kJ/mol.
Кључне речи:
rhenium / sorption / alumina / sorption capacity / sorption isothermИзвор:
Journal of the Serbian Chemical Society, 2007, 72, 6, 555-562Финансирање / пројекти:
- Синтеза, карактеризација и примена колоидних дисперзија неорганских материјала нанометарских величина (RS-MESTD-MPN2006-2010-142004)
DOI: 10.2298/JSC0706555L
ISSN: 0352-5139
WoS: 000248093800004
Scopus: 2-s2.0-34447124420
Колекције
Институција/група
VinčaTY - JOUR AU - Lukić, Dragoljub M. AU - Vučina, Jurij L. AU - Milonjić, Slobodan K. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3221 AB - The sorption of perrhenate anion on alumina from aqueous solutions of sodium chloride was investigated under dynamic conditions. The initial concentrations of rhenium were in the range of 2.7 x 10(-2)-2.7 mmol/dM(3). The breakthrough curves as the function of Re and NaCl concentrations (0. 12-0.20 mol/dm(3)), pH 2-6 and flow rate 3-10 ml/min were determined. According to the experimental results, it was concluded that the breakthrough capacities, the capacities at c/c(0) = 0.5, the total column capacities and the utilization degrees (column efficiency) increase with increasing Re and NaCl concentrations and decreasing pH. The optimal flow rate was found to be 3 ml/min. At pH 2 and c(0) = 2.7 mmol Re/dm(3), the total capacity was found to be Q(0.9) (max) = 2.1 x 10(-2) mmol Re/g Al2O3. The data for perrhenate anions fit with a Henry-type isotherm. It was found that, under the above mentioned conditions, the value of the Henry constant K-H was 7.8 x 10(-3) dm(3)/g and the Gibbs energy change, Delta G was -0.5 kJ/mol. T2 - Journal of the Serbian Chemical Society T1 - Sorption of rhenium on alumina under dynamic conditions VL - 72 IS - 6 SP - 555 EP - 562 DO - 10.2298/JSC0706555L ER -
@article{ author = "Lukić, Dragoljub M. and Vučina, Jurij L. and Milonjić, Slobodan K.", year = "2007", abstract = "The sorption of perrhenate anion on alumina from aqueous solutions of sodium chloride was investigated under dynamic conditions. The initial concentrations of rhenium were in the range of 2.7 x 10(-2)-2.7 mmol/dM(3). The breakthrough curves as the function of Re and NaCl concentrations (0. 12-0.20 mol/dm(3)), pH 2-6 and flow rate 3-10 ml/min were determined. According to the experimental results, it was concluded that the breakthrough capacities, the capacities at c/c(0) = 0.5, the total column capacities and the utilization degrees (column efficiency) increase with increasing Re and NaCl concentrations and decreasing pH. The optimal flow rate was found to be 3 ml/min. At pH 2 and c(0) = 2.7 mmol Re/dm(3), the total capacity was found to be Q(0.9) (max) = 2.1 x 10(-2) mmol Re/g Al2O3. The data for perrhenate anions fit with a Henry-type isotherm. It was found that, under the above mentioned conditions, the value of the Henry constant K-H was 7.8 x 10(-3) dm(3)/g and the Gibbs energy change, Delta G was -0.5 kJ/mol.", journal = "Journal of the Serbian Chemical Society", title = "Sorption of rhenium on alumina under dynamic conditions", volume = "72", number = "6", pages = "555-562", doi = "10.2298/JSC0706555L" }
Lukić, D. M., Vučina, J. L.,& Milonjić, S. K.. (2007). Sorption of rhenium on alumina under dynamic conditions. in Journal of the Serbian Chemical Society, 72(6), 555-562. https://doi.org/10.2298/JSC0706555L
Lukić DM, Vučina JL, Milonjić SK. Sorption of rhenium on alumina under dynamic conditions. in Journal of the Serbian Chemical Society. 2007;72(6):555-562. doi:10.2298/JSC0706555L .
Lukić, Dragoljub M., Vučina, Jurij L., Milonjić, Slobodan K., "Sorption of rhenium on alumina under dynamic conditions" in Journal of the Serbian Chemical Society, 72, no. 6 (2007):555-562, https://doi.org/10.2298/JSC0706555L . .