Green synthesis of polypyrrole/nanoscale zero valent iron nanocomposite and use as an adsorbent for hexavalent chromium from aqueous solution
| Autor: | Lebogang Katata-Seru, Thabiso C. Maponya, Mpitloane J. Hato, Edwin Makhado, I. Bahadur, Kwena D. Modibane, S.M. Matome |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
020209 energy Filtration and Separation 02 engineering and technology Hexavalent chromium Polypyrrole Catalysis Education Green synthesis chemistry.chemical_compound symbols.namesake Adsorption 020401 chemical engineering Iron zero nanoparticles 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering lcsh:Chemical engineering Fluid Flow and Transfer Processes Zerovalent iron Nanocomposite Aqueous solution Process Chemistry and Technology Langmuir adsorption model lcsh:TP155-156 Polymerization chemistry symbols Energy (miscellaneous) Nuclear chemistry |
| Zdroj: | South African Journal of Chemical Engineering, Vol 34, Iss, Pp 1-10 (2020) |
| ISSN: | 1026-9185 |
| Popis: | Green synthesis of polypyrrole/nanoscale zero valent iron nanocomposite (Ppy/Fe0 NC) fabricated by a simple in-situ oxidative polymerization method was reported. The structure and the properties of Ppy/Fe0 NC were confirmed using various analytical techniques. The as-prepared Ppy/Fe0 NC was used as an adsorbent for the adsorption of hexavalent chromium (Cr(VI)) through batch experiments. The effect of initial pH, adsorbent dose, contact time, equilibrium concentration and co-existing ions were studied. It was deduced that adsorption data followed the pseudo-second-order rate model and Langmuir isotherm model with a maximum adsorption capacity of 202.02 mg/g at 25°C. Furthermore, high selectivity of Ppy/Fe0 nanocomposite for the removal Cr(VI) was observed even in the presence of co-existing ions. These findings suggest that the green synthesized adsorbent can be used for treatment of wastewater containing Cr(VI). |
| Databáze: | OpenAIRE |
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