A facile synthesis of Fe3O4-charcoal composite for the sorption of a hazardous dye from aquatic environment

Journal of Environmental Management
Md Juned K Ahmed, M Ahmaruzzaman

Abstract

Herein, we synthesized Fe3O4-charcoal composite using chemical precipitation technique and utilized it for the sorption of methylene blue from aqueous solution. The synthesized composite was characterized by Infra-red spectroscopy, N2 adsorption-desorption isotherm, X-ray diffraction, selected area electron diffraction, transmission electron microscopy, and vibrating sample magnetometer. The composite depicts absorption bands conforming to Fe-O, -OH, CO, and C-O vibrations. The composite was mesoporous in nature with a surface area of 387.30 m(2) g(-1). The observed diffraction planes correspond to face-centered cubic Fe3O4 and disordered graphitic carbon. The spherical Fe3O4 particles (average diameter ∼13.8 nm) were uniformly distributed in the carbon matrix of the charcoal. The saturation and remanent magnetizations demonstrate its potential for magnetic separation and reuse. The composite showed dye sorption capacities of 97.49 mg g(-1) and 90.85 mg g(-1) in batch and fixed-bed system. Pseudo-second order kinetics and Temkin isotherm best represented the sorption data. The sorption process was endothermic, spontaneous, and administered by electrostatic, π-π dispersive interactions, film, and intraparticle diffusion. Microwa...Continue Reading

References

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Dec 23, 2014·Journal of Colloid and Interface Science·Madhu KumariDinesh Mohan

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Citations

Jul 28, 2017·Natural Product Research·Su YanJunling Ji
Jan 8, 2019·Environmental Science and Pollution Research International·Jie LiangShujing Ye
Jan 29, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Jian-Ming GaoPeng Li

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