Water pollution treatment using CoFe2O4 /AC/PANI as a ternary nanocomposite: Kinetic and Thermodynamic study

Hateef, Mohammed F.; Alesary, Hasan F.; Barton, Stephen

	Water pollution treatment using CoFe2O4 /AC/PANI as a ternary nanocomposite: Kinetic and Thermodynamic study
Al-Zahraa Journal for Health and Medical Sciences
Volume 3, Issue 1, March 2025, Pages 1-24 PDF (1.52 M)
Document Type: Research Article
Authors
Mohammed F. Hateef^* ¹; Hasan F. Alesary²; Stephen Barton³
¹1 Oil Department, College of Engineering, University of Kerbala, Karbala, Iraq. 2 Department of Chemistry, College of Science, University of Kerbala, Karbala, Iraq.
²Department of Chemistry, College of Science, University of Kerbala, Karbala, Iraq
³School of Life Sciences, Pharmacy and Chemistry, Kingston University London, Kingston-upon-Thames, Surrey, UK
Abstract
The research assessed the effectiveness of removing the harmful anionic Direct orange 39 dye using CoFe2O4/AC/ PANI nanocomposite as a novel and economical nanoadsorbent. This nanocomposite synthesized through chemical coupling and polymerization method for CoFe2O4 with Active carbon (AC) and polyaniline (PANI). The chemical coupling of composite components performed in ammonium persulfate solutions to create monomer that polymerizations in aqueous acids. Infrared spectroscopy proved the CoFe2O4 nanoparticles synthesized as an inverse spinel via characteristic peaks between 600 and 400 cm-1, which indicating to the locations of tetrahedral Fe-O and octahedral Co-O. X-ray diffraction conformed that the synthesis ternary composite has nanoscale size 36 nm. The BET surface areas and pore size distribution demonstrated are 54.118 m2 g-1 and 8.9064 m2 g-1, respectively. The hysteresis loops of adsorption isotherms are type IV, with relative pressure range (P/P0) of 0.3~1.0, which belongs to type H3 with nanopores. Initially, the adsorption experiment was carried out for this superimposed surface towards the direct orange 39 dye and found high removal dye percentage of 95% at 45 min, surface mass at 0.3 g, and pH 6. The composite surface shows the adsorption kinetics of direct orange 39 dye that can be effectively described by the pseudo-first order model. On the other hand, the thermodynamics functions were detected and found the removal reaction of dye using composite was demonstrated a chemical adsorption (greater than 80 kJ/mol) with endothermic reaction.
Keywords
Direct Orange 39 Dye; Textile Dye; CoFe2O4/AC/PANI NPs; Adsorption Removal; polymerization

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