Treatment of produced water using walnut shell for 226Ra removal
| Autor: | W. Al-Masri, Yara Aljbai, Jamal Al-Abdullah, M.S. Al-Masri, Yusr Amin, Yasser Al-Khateeb |
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| Rok vydání: | 2021 |
| Předmět: |
Chemistry
Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Shell (structure) Sorption Pollution Produced water Analytical Chemistry Ion Adsorption Nuclear Energy and Engineering Chemical engineering Oil production Desorption Radiology Nuclear Medicine and imaging Water treatment Spectroscopy |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 329:795-804 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-021-07863-0 |
| Popis: | Sorption and desorption of 226Ra from produced water with oil production on walnut shell media were investigated using batch-type and column-type techniques. The results showed that 226Ra is completely adsorbed onto the walnut shell media with equilibrium time of approximately 15 min provided that the concentration of competing ions are low. Removal efficiency of 226Ra from produced water by walnut shell media depends mainly on pH and concentration of associated ions such as Na+, Ca+2, Ba+2 and Sr+2; removal efficiency decreased when concentrations increase. Adsorbed 226Ra on walnut shell filters can be easily desorbed from walnut shell media using NaCl solution (0.5 mol L−1 provided that adsorbed oil by shells is first removed; oil can be easily removed by washing the walnuts shell filters using FeSO4 and H2O2 solution. The method was applied to several walnut shell filters collected from the oilfield water treatment plants and the results proved the effectiveness of the applied method. |
| Databáze: | OpenAIRE |
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