Sorption of Cu(II), Zn(II) and Pb(II) Ions in an Aqueous Solution on the PVC-Acetylacetone Composites.

Elzbieta Radzyminska-Lenarcik,Katarzyna Witt

doi:10.3390/polym11030513

Elzbieta Radzyminska-Lenarcik, Katarzyna Witt

Open Access

https://doi.org/10.3390/polym11030513

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Journal: Polymers	Publication Date: Mar 18, 2019
Citations: 12	License type: CC BY 4.0

Affiliation: Bydgoszcz University of Science and Technology

Abstract

The possibility of removing Cu(II), Zn(II) and Pb(II) ions by sorption on new PVC-based composite materials with different contents of acetylacetone (acac) and porophor was investigated. Composites were characterized using a scanning electron microscope and by infrared spectral analysis (FTIR). Sorption tests were conducted at 20 °C. It has been shown that the equilibrium is established in about 4 h. The reduction in ion concentration in the solution depended on the content of both acac and porophor in the composite. The maximal reduction in ion concentration ranged from 8% to 91%, 10–85% and 6–50% for Cu(II), Zn(II) and Pb(II) ions, respectively, depending on the composite composition. The best results were obtained for the composite containing 30% w/w of acac and 10% of porophor. For this composite, the sorption capacity after 4 h sorption for Zn(II), Cu(II) and Pb(II) ions was 26.65, 25.40, and 49.68 mg/g, respectively. Kinetic data were best fitted with a pseudo–second-order equation.

Highlights

Zinc, copper and lead are among the most important metals used in many areas of industry and economy of a given country [1,2]
We have demonstrated that the use of both acetylacetone [55]
2 value from suggested the pseudo-second-order model is very close tothe the experimental. These results that the studied kinetic adsorption systems followed pseudo-second(qe ). These results suggested that the studied adsorption systems followed the pseudo-second-order values

Summary

Introduction

Copper and lead are among the most important metals used in many areas of industry and economy of a given country (strategic metals) [1,2]. The still growing utilization and exploitation of these metals leads to an overall increase in their prices and stimulates a particular interest in even low-grade raw materials for their production. Metal-bearing wastes are becoming more and more desirable raw materials [3,4]. Many of them are toxic (lead, mercury, cadmium, copper) or carcinogenic [6,7,8,9]. This is why metals should be removed [3,4,10]. Methods for recovering metals from industrial waste are gaining more and more significance [4,11,12]

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