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Nano iron oxide loaded Poly (Acrylonitrile-co-Acrylic acid) hydrogel applied as Novel adsorbent for Effective removal of Toxic Cd2+ ions using Fixed-bed Micro column technology

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Author Affiliations

  • 1Department of Chemistry, Govt. V.Y.T. PG. Autonomous College Durg- 491001, CG, INDIA

Res.J.chem.sci., Volume 4, Issue (9), Pages 88-100, September,18 (2014)

Abstract

This study applies super paramagnetic nano iron oxide particles loaded poly (Acrylonitrile-co-acrylic acid) hydrogel as adsorbent for the removal of toxic cadmium ions from aqueous solution using column adsorption. Experiments were carried out as a function of liquid flow rate (1 – 3 ml min-1), initial feed of Cd (II) concentration (0.25-1mg dm-3) and bed depth (0.25 -1 cm). The results showed that a flow rate of 1 ml min--1, inlet Cd (II) concentration of 1 mg dm-3 and a bed depth of 1 cm were most feasible. The total adsorbed quantities, equilibrium uptakes and total removal percents of Cd (II) related to the effluent volumes were determined by evaluating the breakthrough curves obtained at different flow rates, inlet Cd (II) concentration and bed depth respectively. The bed depth service time (BDST), Thomas, Yoon-Nelson, Bohart-Adams and Wolborska kinetic models were used to analyze the experimental data and the model parameters were evaluated. The experimental data correlated well with calculated data using Yoon-Nelson equation.

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