Activated carbon from pencil peel waste for effective removal of cationic crystal violet dye from aqueous solutions

Autor: Dilip D. Anuse, Suryakant A. Patil, Ashwini A. Chorumale, Akanksha G. Kolekar, Prachi P. Bote, Laxman S. Walekar, Samadhan P. Pawar
Jazyk: angličtina
Rok vydání: 2025
Předmět:
Zdroj: Results in Chemistry, Vol 13, Iss , Pp 101949- (2025)
Druh dokumentu: article
ISSN: 2211-7156
DOI: 10.1016/j.rechem.2024.101949
Popis: In this investigation, the pencil peel (PP) is utilized as a scavenger for adsorptive removal of crystal violet (CV) dye. Pencil peel activated carbon (PPAC) is produced through a straightforward physical activation method by annealing pencil peel in a muffle furnace at 300 °C. The prepared PPAC shows the mesoporous nature having specific surface area of 217.44 m2 g−1. The highest uptake of CV dye was observed at equilibrium as working solution pH-8.0, CV dye concentration-100 mg L-1, the PPAC dosage-0.25 g at 200 rpm speed. The observed experimental results align with the Freundlich adsorption isotherm model, suggesting of multilayer adsorption. The kinetic study attributes the uptake rate adheres to the pseudo-second-order kinetic rate model (regression coefficient, R2 = 0.99).
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