Open Access

NiO at Paraffin Wax Soot Carbon Nanocomposites for Congo Red Dye Removal from Waste Water

I. Muralisankar , imuralikavitha@gmail.com
Department of Chemistry, Coimbatore Institute of Technology, Coimbatore, TN, India. S. Agilan , Department of Physics, Coimbatore Institute of Technology, Coimbatore, TN, India. T. Venkatachalam , Department of Physics, Coimbatore Institute of Technology, Coimbatore, TN, India. E. P. Subramaniam , Department of Chemistry, Coimbatore Institute of Technology, Coimbatore, TN, India. P. Thanapackiam Department of Chemistry, Coimbatore Institute of Technology, Coimbatore, TN, India.

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Abstract

In this work, Nickel oxide-activated carbon nanocomposites (NiO-CNC) were synthesized using the carbon soot of paraffin wax by a simple combustion method and tested as an adsorbent for the removal of hazardous Congo red dye (CR) in the aqueous phase. The adsorption studies have been carried out thoroughly and elucidated with the impact of important parameters, viz, pH of the dye solution, initial dye concentration, contact time and sorbent dose, which were found to be 11, 200 ppm, 60 min, and 0.035 g/L, respectively. Sorption kinetics and isotherm modeling were studied and checked for their applicability with dye sorption system using synthesized NiO-CNC by non-linear fit. The co-relation coefficient of the Langmuir and Redlich-Peterson isotherm model was found to be 0.99 > 1. The pseudo-second order kinetic model was fitting well with the obtained equilibrium data with maximum sorption capacity (q_e= 401.35 mg/g). The thermodynamic parameters have indicated that NiO-CNC system was more feasible, exothermic and spontaneous.

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Reference

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