Adsorption of hexavalent chromium in aqueous solution on activated carbon prepared from apple peels
| Autor: | L. Rghioui, I. Enniya, A. Jourani |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Aqueous solution
Kinetics Pharmaceutical Science chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law 021001 nanoscience & nanotechnology 01 natural sciences Pollution Chromium chemistry.chemical_compound Adsorption chemistry medicine Environmental Chemistry Freundlich equation Fourier transform infrared spectroscopy Hexavalent chromium 0210 nano-technology 0105 earth and related environmental sciences Activated carbon medicine.drug Nuclear chemistry |
| Zdroj: | Sustainable Chemistry and Pharmacy. 7:9-16 |
| ISSN: | 2352-5541 |
| DOI: | 10.1016/j.scp.2017.11.003 |
| Popis: | In the present study, activated carbon prepared from apple peels (ACAP) was used to remove chromium (VI) from aqueous solution. The characterization of this ACAP has been performed using different analytical techniques such as FTIR and SEM. The adsorption parameters studied were: pH [2- 7], adsorbent dose [0.025–0.15 g/50 mL], initial Cr(VI) concentration [10–50 mg/L] and temperature [10–40 °C]. Maximum Cr(VI) adsorption of 36.01 mg/g was achieved using Cr(VI) concentration of 50 mg/L, pH of 2, adsorbent dose of 0.05 g/50 mL, contact time of 4 h and temperature of 28 °C. This ACAP gave a Cr(VI) adsorption capacity better than a commercial activated carbon. The experimental data fitted well to Freundlich isotherm (R2 = 0.99) and kinetics followed the pseudo-second order model. Thermodynamic parameters, ΔG |
| Databáze: | OpenAIRE |
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