Utilizing Natural Lupine Peel Powder for Effective Removal of Reactive Violet 46 Dye: Insights into Kinetics and Thermodynamics | ||
| International Journal of Theoretical and Applied Research | ||
| Articles in Press, Accepted Manuscript, Available Online from 09 November 2025 PDF (1.38 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ijtar.2025.397102.1129 | ||
| Authors | ||
| Gamalat Mahmoud* ; Samia Abo-Farha | ||
| Department of Chemistry, Faculty of Science (Girls), Al-Azhar University, Nasr City, Cairo, Egypt | ||
| Abstract | ||
| In the present study, reactive violet 46 (RV 46) dye was extracted and inserted into fluid medium using lupine peel in both inactivated and activated states, inexpensive, naturally occurring adsorbents. FTIR and SEM are both used to assess adsorbents. The remedy pH, the size and quantity of the adsorbent, starting dye level, temperature, and the duration of contact were all regulated using a system that worked in batches. Removal efficiency % of RV 46 dye 91.25% onto lupine peel powder active LPA and 70.30 % onto lupine peel powder inactive LPI at optimum conditions. According to experimental findings, the adsorption process proceeds swiftly and spontaneously. The kinetics of adsorption inquiry, either a pseudo-1st-order or a pseudo-2nd-order framework, were used. Regarding RV 46 adsorption into LPI and LPA, a pseudo-2nd-order kinetic framework provides the most effective fitting to the observations. To ascertain the RV 46 dye removal the isotherms adsorbents, a pair of popular isotherm equations, Langmuir and Freundlich, was employed. The Freundlich framework matches the RV 46 adsorption isotherm dataset quite nicely. The spontaneous, exothermic, and practical characteristics of the adsorption of RV 46 into LPI and LPA were shown by the thermodynamics evaluation (ΔGo, ΔHo, and ΔSo). It was also shown that LPI and LPA adsorbents may be reused and regenerated using ethanol. According to the results, lupine peel may become an inexpensive adsorbent for removing RV 46 dye from water-based solutions. | ||
| Keywords | ||
| Isotherms; Kinetics; Lupine Peel Powder Adsorbent; Reusability; Thermodynamics | ||
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