ADSORPTION OF LANTHANIDE (III) CATIONS ON CROSS-LINKED IONIC POLYMER, COMPOSITION AND THERMAL ANALYSIS OF THE FORMED COMPOSITES
| dc.contributor.author | Guțanu, Vasile | |
| dc.contributor.author | Lisă, Gabriela | |
| dc.contributor.author | Rusu, Daniela | |
| dc.date.accessioned | 2023-11-03T10:26:59Z | |
| dc.date.available | 2023-11-03T10:26:59Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | The adsorption of lanthanide(III) cations by a strongly basic cross-linked polymer containing R4N+ groups was studied at 21 and 50°C. At both temperatures the sorption is best described with the Langmuir model. The maximum adsorption at both 21 and at 50°C increases in the series: La3+ < Eu3+ < Nd3+ < Er3+. The results show that polymers containing strongly basic groups can, under certain conditions, be used to separate lanthanide(III) cations in solutions containing mono- and bivalent cations. SEM EDX studies show that La3+, Nd3+, Eu3+ and Er3+ form composites in the polymer phase. The elemental composition of structural units of the composites is La1Cl13.7S64.3O287.7N122.6C2869, Nd1Cl27.4S50.7O391.6N169.3C2896, Eu1Cl8.5S50.8O285N130C2118 and Er1Cl36.8S263.9O1106N447C8657. The thermodynamic parameters of the sorption process are calculated: free energy, enthalpy, and entropy. Thermogravimetric analysis made it possible to determine the stability of the formed composites, the stages of their decomposition and the corresponding kinetic parameters. | en |
| dc.identifier.citation | GUȚANU, Vasile, LISĂ, Gabriela, RUSU, Daniela. Adsorption of Lanthanide (III) Cations on Cross-Linked Ionic Polymer, Composition and Thermal Analysis of the Formed Composites. În: Colloid Journal, 2021, nr. 6(83), pp. 688-697. ISSN 1061-933X | en |
| dc.identifier.issn | 1061-933X | |
| dc.identifier.uri | https://msuir.usm.md/handle/123456789/11582 | |
| dc.identifier.uri | https://doi.org/10.1134/S1061933X21060041 | |
| dc.language.iso | en | en |
| dc.subject | adsorption | en |
| dc.subject | Crosslinking | en |
| dc.subject | Free energy | en |
| dc.subject | Positive ions | en |
| dc.subject | thermogravimetric analysis | en |
| dc.title | ADSORPTION OF LANTHANIDE (III) CATIONS ON CROSS-LINKED IONIC POLYMER, COMPOSITION AND THERMAL ANALYSIS OF THE FORMED COMPOSITES | en |
| dc.type | Article | en |