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<p>The merits of calcium ferrite (CaFe<sub>2</sub>O<sub>4</sub>) and polyaniline were intended to integrate in the quest for a novel nano-adsorbent. Conversely, the issue of agglomeration of CaFe<sub>2</sub>O<sub>4</sub> nanoparticles; and the demerits of polyaniline such as low mechanical strength and poor dispersion were anticipated to be reduced in the synthesized composite. The analyses such as XRD, FTIR, EDX, FEGSEM, VSM, and N<sub>2</sub> adsorption-desorption were used to investigate the desired qualities of the composite. Subsequent study on the adsorption of methyl red (MR) dye on to the nanocomposite was found promising. Research findings such as an equilibrium time of 30 min, an uptake capacity of 107.53 mg/g, and an optimum working pH of 7.0 established the novelty of the adsorbent. Experimental data plots revealed the adsorption mechanism to follow pseudo-second-order kinetics and the Langmuir isotherm. The reduction in the dye uptake capacity was found 10% only at the sixth cycle of regeneration and reuse of the adsorbent. Synthesized nanocomposite had the merit of adsorbing the dye at a neutral pH, leading to a lower cost of neutralizing the treated wastewater prior to disposal.</p>

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Investigation of the synthesized CaFe2O4-polyaniline nanocomposite's adsorptive ability using its magnetic characteristics to remove methyl red dye

  • 期刊论文

  • 发表日期：

    2025年7月24日

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  • Payel Das,
  • Animesh Debnath,
  • Mriganka Sekhar Manna

摘要

The merits of calcium ferrite (CaFe2O4) and polyaniline were intended to integrate in the quest for a novel nano-adsorbent. Conversely, the issue of agglomeration of CaFe2O4 nanoparticles; and the demerits of polyaniline such as low mechanical strength and poor dispersion were anticipated to be reduced in the synthesized composite. The analyses such as XRD, FTIR, EDX, FEGSEM, VSM, and N2 adsorption-desorption were used to investigate the desired qualities of the composite. Subsequent study on the adsorption of methyl red (MR) dye on to the nanocomposite was found promising. Research findings such as an equilibrium time of 30 min, an uptake capacity of 107.53 mg/g, and an optimum working pH of 7.0 established the novelty of the adsorbent. Experimental data plots revealed the adsorption mechanism to follow pseudo-second-order kinetics and the Langmuir isotherm. The reduction in the dye uptake capacity was found 10% only at the sixth cycle of regeneration and reuse of the adsorbent. Synthesized nanocomposite had the merit of adsorbing the dye at a neutral pH, leading to a lower cost of neutralizing the treated wastewater prior to disposal.