Sorption Properties of Peat for U(VI) and 226Ra in U Mining Areas
| Autor: | Catherine Beaucaire, Vannapha Phrommavanh, Gabrielle Bordelet, Michael Descostes |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
sorption Peat Environmental remediation activity Environmental engineering Earth and Planetary Sciences(all) chemistry.chemical_element Sorption General Medicine Uranium uranium radium batch Adsorption chemistry Environmental chemistry Environmental behavior peat Ph range mine Organic matter organic matter |
| Zdroj: | Procedia Earth and Planetary Science. 7:85-88 |
| ISSN: | 1878-5220 |
| Popis: | Understanding the environmental behavior of U and 226Ra is important for remediation of former mining sites and assessment of their durability. The aim of this study is to determine the sorption properties of an acidic peat for U and 226Ra, located near a former U mine. A 90% retention of U over a pH range of 3 to 10 was observed in Na- conditioned peat samples issued from the mesotelm, with a Rd between 1000 and 12000 mL/g. It seems that U sorption in peat is not only governed by organic matter. The Kd for 226Ra adsorption increases with pH from zero to 4849 mL/g. However in this mining environment, the peat bog proved to be significantly impacted by anthropogenic activities, with the presence of detrital components in the peat material that can also contribute to U and Ra sorption. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|