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Uranium Recovery from Aqueous Solutions Using Amidoxime Modified Cellulose Derivatives. II. Uranium Uptake Behavior of Amidoximated Ethyl Cellulose
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bayramgil, Nursel Pekel Başarır, Seyhan Şener |
| Copyright Year | 2018 |
| Abstract | Amidoxime modified ethyl cellulose (EC- g -AO) was used for the recovery of uranyl ions from aqueous solutions by a complexation process. Adsorption trials were carried out in different concentrations of UO 2 2+ solutions (100 – 1000 mg/L) and at temperatures ranging from 25 to 50 ° C. The kinetics and the thermodynamics of the adsorption of uranyl ions (UO 2 2+ ) by EC- g -AO were investigated. The adsorption capacity was found as 240 mg UO 2 2+ /g dry copolymer. The thermodynamic parameters for the interaction of UO 2 2+ with EC- g -AO were calculated from thermodynamic relations. Calculations showed that adsorption occurred through strong electrostatic interactions with an enthalpy of -23.6 kJ/mol. The desorption of UO 2 2+ was investigated by desorption agents like EDTA, HCl, NaHCO 3 , and NaOH. 52 % of desorption yield was found for NaHCO 3 . |
| Starting Page | 521 |
| Ending Page | 538 |
| Page Count | 18 |
| File Format | PDF HTM / HTML |
| DOI | 10.18596/jotcsa.310947 |
| Volume Number | 5 |
| Alternate Webpage(s) | http://dergipark.gov.tr/download/article-file/446619 |
| Alternate Webpage(s) | https://doi.org/10.18596/jotcsa.310947 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
