| Autor: |
Bristy, Sadia Salsabil, Rahman, Mohammad Mostafizar, Rahman, Mohammad Mahbubor, Alam, Mohammad Ashraful, Karim, Mohammad Rabiul, Ahmad, Hasan |
| Předmět: |
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| Zdroj: |
International Journal of Applied Ceramic Technology; May/Jun2019, Vol. 16 Issue 3, p1239-1252, 14p |
| Abstrakt: |
In this investigation, magnetic γ‐Al2O3 nanocomposite polymer particles with epoxide functionality were prepared following a multistep process. The prepared nanocomposite polymer particle was named as γ‐Al2O3/Fe3O4/SiO2/poly(glycidyl methacrylate (PGMA). The surface property was evaluated by carrying out the adsorption study of Remazol Navy RGB (RN), a model reactive azo dye, on both γ‐Al2O3/Fe3O4/SiO2 and γ‐Al2O3/Fe3O4/SiO2/PGMA nanocomposite particles, that is, before and after epoxide functionalization. A contact time, temperature, adsorbent dose, and dye concentration dependent change in adsorption behavior was observed on both nanocomposite particles. The adsorption amount reached equilibrium (qe) value within 5 minutes at the respective point of zero charge (PZC). The adsorption density of RN per unit specific surface area on epoxide functional γ‐Al2O3/Fe3O4/SiO2/PGMA nanocomposite polymer particles (1.30 mg/m2) was higher relative to that on γ‐Al2O3/Fe3O4/SiO2 nanocomposite particles (0.87 mg/m2). The optimum adsorbent dose for obtaining the maximum adsorption density was 0.01 g. Comparatively, Langmuir isotherm model was better to describe the adsorption process and the adsorption process was favorable at low temperature (283 K). Batch kinetic adsorption experiment suggested that a pseudo‐second‐order rate kinetic model is more appropriate. Nanocomposite polymer particles were used as adsorbent up to third cycle with almost 99% adsorption efficiency. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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