Sorption of Cobalt(II) and Copper(II) Ions by Highly Cross-Linked Carboxyl Cation Exchangers from Natural Waters with High Salt Background

Abstract:

The equilibrium and dynamics of sorption of Co²⁺ and Cu²⁺ ions have been investigated on highly cross-linked carboxyl cation exchangers of gel (KB-125P) and macroreticular (KB-2E-10) structure from solutions with an ionic strength of 0.1 and 1. It has been established that there is a weak effect of salt background concentration on selectivity of ion sorption in static conditions. In dynamic conditions with increased levels of background electrolytes, there is a decrease in the degree of ion exchanger layer KB-2E-10, which indicates a decrease in the selectivity of sorption. For the cation exchanger KB-125P, on the contrary, there is an increase in the degree of the layer use. It has been concluded that the gel structure of the sorbent KB-125P provides selective sorption of Co²⁺ and Cu²⁺ ions from solutions with high salt background. Coloring of cation exchangers layer KB-125P and KB-2E-10 in the absorption of Cu²⁺ and Co²⁺ makes it possible to create effective indicator tubes on their basis.

• Periodical: Advanced Materials Research (Volume 1085)
• Pages: 68-73
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1085.68
• Online since: February 2015
• Authors: Valentina V. Zharkova, Lyudmila Bobkova, Camilla A. Bektimirova, Vladimir Kozik
• Keywords: Cation Exchanger, Cobalt(II) Ions, Copper(II) Ions, Sorption, Test Indicator Systems

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