Abstract

Saeedeh Hashemian*, Motaharah Hidarian

DOI : http://dx.doi.org/10.13005/ojc/300434

Sawdust/MnFe₂O₄ nano composite was prepared and characterized by FTIR, XRD, SEM and BET. The sawdust, MnFe₂O₄ nano particles and sawdust/MnFe₂O₄ nano composite were used for removal of indigo carmine (IC). The maximum percentage of adsorption of IC was found at contact time of 15 min and pH 2. The adsorption of IC followed by pseudo second order kinetic model. The experimental data of sorption isotherms analyzed with Langmuir and Freundlich isotherm. The adsorption of IC was best described by the Freundlich isotherm model. Thermodynamic results  indicated that adsorption of IC is endothermic and spontaneous process. The reused sorbent  can be regenerated and employed  after 5 cycle with good efficiency.

Adsorption; Indigo carmine (IC); MnFe2O4 nano particle; Sawdust; Sawdust/MnFe2O4

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