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Removal Studies of Methyl Orange Dye Using Ricinus Communis-capeed Fe3O4NPs from Aqueous Solutions | ||
| Journal of Physical & Theoretical Chemistry | ||
| دوره 18، شماره 3 - شماره پیاپی 4، اردیبهشت 2021، صفحه 37-54 اصل مقاله (892.87 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.30495/jptc.2021.21446 | ||
| چکیده | ||
| The applicability of Ricinus Communis functionalized with iron oxide nanoparticles synthesis for eliminating dyes from aqueous media has been confirmed. Identical techniques including FT-IR, BET, XRD and SEM has been utilized to characterize this novel material. The investigation showed the applicability of Ricinus Communis functionalized with iron oxide nanoparticles as an available, suitable and low-cost adsorbent for proper deletion of Methyl Orange (MO) dye from aqueous media. The pH value of 5.0, adsorbent dosage of 0.3 g, (MO) dye concentration of 50 mg/L, and contact time of 60 min have been considered the optimum values of adsorption onto Ricinus Communis-capeed Fe3O4NPs. Studying the impact of different parameters revealed that the adsorption percentage and the initial (MO) dye concentration have been inversely related while the adsorption percentage and adsorbent dosage have been directly related. It was shown that the adsorption of (MO) dye deletion by adsorbent was at pH 5.0. The Langmuir model got better of other models in describing the equilibrium data. Thermodynamic parameters of free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) of adsorption were determined using isotherms. The fact that the sorption process was exothermic was well reflected by the negative value of (ΔGo, ΔHo and ΔSo) which on its own expressed the affinity of Ricinus Communis-capeed Fe3O4NPs for deleting (MO) dye. The maximum adsorption capacity (qmax) was observed to be (30.5 mg g-1) for (MO) dye at desired conditions. | ||
| کلیدواژهها | ||
| Methyl Orange (MO) dye؛ Adsorption capacity؛ Langmuir isotherms؛ Thermodynamic | ||
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