Efficient exclusion of uranyl ion from aqueous medium by a novel magnetic bio adsorbent (Phyllanthus emblica bark)
| Autor: | Pradeep Kumar Ghosh, Poonam Deshmukh, Santosh Kumar Sar |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Langmuir
Environmental Engineering 0208 environmental biotechnology Geography Planning and Development Kinetics Iron oxide 02 engineering and technology 010501 environmental sciences Uranyl 01 natural sciences 020801 environmental engineering Ion chemistry.chemical_compound Adsorption chemistry Phyllanthus emblica Environmental Chemistry Magnetic nanoparticles 0105 earth and related environmental sciences Water Science and Technology Nuclear chemistry |
| Zdroj: | Groundwater for Sustainable Development. 14:100625 |
| ISSN: | 2352-801X |
| DOI: | 10.1016/j.gsd.2021.100625 |
| Popis: | The exclusion process of uranyl ion in an aqueous medium is carried out with an adsorption method. The existence of uranyl ion in the environment is a matter of concern due to its toxicity. The biotic factor has been affected badly with the presence of uranyl ion above a permissible limit. In the present study, iron oxide magnetic particles (Fe 3O4) were successfully fused with tree bark of Phyllanthus emblica by chemical precipitation , which was characterized by XRD, FTIR, and SEM-EDS study. Moreover, Phyllanthus emblica bark is extremely rich in iron and magnetic adsorbent does not produce any secondary pollutant as compared to other adsorbents. It is a novel as well as green approach towards environment. The amount of the adsorbent (0.3 gm/50 ml) could remove 85.6% of U(VI) in 40 min from a metal ion solution concentration 25 mg/L at room temperature (303 K). The equilibrium adsorption is reported at pH = 7. The adsorption isotherm is defined by Langmuir (r 2 = 0.963), while the kinetic interest profile is considered by the kinetics of pseudo second-order (r2 = 0.9988). Estimated thermodynamic parameters are fit for present investigation. |
| Databáze: | OpenAIRE |
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