Removal of copper(II) and lead(II) from aqueous solution by manganese oxide coated sand II. Equilibrium study and competitive adsorption

Journal of Hazardous Materials
Runping HanYang Jiujun

Abstract

The adsorption equilibrium of MOCS and the Cu(II) and Pb(II) ions removal capacity by MOCS in single-(non-competitive) and binary-(competitive) component sorption systems from aqueous solutions were investigated. The equilibrium data were analyzed using the Langmuir, Freundlich, Temkin and Redlich-Peterson isotherms. The characteristic parameters for each isotherm were determined. The Langmuir and Redlich-Peterson isotherms provided the best correlation for both Cu(II) and Pb(II) onto MOCS. From the Langmuir isotherms, maximum adsorption capacities of MOCS towards Cu(II) and Pb(II) are determined at different temperature. The maximum adsorption capacity of Cu(II) and Pb(II) per gram MOCS in single component sorption systems were from 5.91 and 7.71 micromol to 7.56 and 9.22 micromol for the temperature range of 288-318 K, respectively. The order of affinity based on a weight uptake by MOCS was as follows: Pb(II)>Cu(II). The same behavior was observed during competitive adsorption that is in the case of adsorption from their binary solution. The thermodynamic parameters (DeltaG degrees , DeltaH degrees , and DeltaS degrees) for Cu(II) and Pb(II) sorption on MOCS were also determined from the temperature dependence. This competiti...Continue Reading

References

Oct 27, 1999·The Science of the Total Environment·J J Sansalone
Feb 27, 2003·Chemosphere·Mahmut Ozacar
Dec 14, 2004·Journal of Colloid and Interface Science·Ilona HeidmannRuben Kretzschmar

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Citations

Aug 27, 2009·Environmental Technology·N BoujelbenZ Elouear
Nov 18, 2018·Environmental Science and Pollution Research International·Ren-Yu WangQi-Ting Zuo
Feb 10, 2021·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Tianzi Dong
Sep 15, 2010·Journal of Hazardous Materials·Nashaat N Nassar
Dec 12, 2018·Environmental Science & Technology·Alen V Gusa, Radisav D Vidic

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