Sustainable and efficient removal of cationic and neutral dyes from aqueous solution using nano-engineered CuFe2O4/Peanut shell magnetic composite

• Published in: Clean technologies and environmental policy Vol. 26; no. 11; pp. 3921 - 3935
• Main Authors: Sharma, Atul, Choudhry, Arshi, Mangla, Bindu, Chaudhry, Saif Ali
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2024; Springer Nature B.V
• Subjects: Adsorption; Adsorptivity; Aqueous solutions; Color removal; Copper ferrite; Dyes; Earth and Environmental Science; Electron microscopy; Endothermic reactions; Environment; Environmental Economics; Environmental Engineering/Biotechnology; Exothermic reactions; Fourier transforms; Gentian violet; Industrial and Production Engineering; Industrial Chemistry/Chemical Engineering; Infrared analysis; Infrared spectroscopy; Microscopy; Nanocomposites; Original Paper; Scanning electron microscopy; Sustainable Development; Synthesis; Transmission electron microscopy; X-ray diffraction; Nanocomposite; Dyes; Adsorption; Wastewater remediation; Copper ferrite
• ISSN: 1618-954X; 1618-9558
• DOI: 10.1007/s10098-023-02666-1

In this paper, CuFe 2 O 4 /PS nanocomposite was synthesized via co-precipitation method and explored for the adsorption performance and proposing mechanism for crystal violet and Bismarck brown removal. The synthesized material was characterized using X-ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometery, scanning electron microscopy–energy-dispersive X-ray, and transmission electron microscopy analyses. The batch experimental studies revealed that the CuFe 2 O 4 /PS nanocomposite exhibited excellent adsorptive performance with maximum adsorption capacity of 7.81 mg/g and 32.25 mg/g for CV and BBR dye, respectively, when compared to pristine peanut shell powder. Furthermore, only 1.5 g/L dose of the adsorbent was able to clean water having 10 mg/L of CV and 30 mg/L of BBR dye concentration. The thermodynamic investigations demonstrated that CV dye adsorption was an endothermic process whereas it was found exothermic for BBR dye. Besides this, the study revealed that the adsorption process occurred spontaneously across all temperatures studied. Additionally, the pseudo-second-order kinetic model was found to determine the reaction rate. The adsorption equilibrium was achieved within 75 min of contact time for both dyes. The nanocomposite material was also easily regenerated using 0.1 M HCl, with a regeneration efficacy of 59.44% for CV and 49.33% for BBR, despite four consecutive adsorption–desorption cycles. Graphical Abstract