Sorption of heavy metals from aqueous solutions with synthetic zeolites

Abstract

The work is devoted to the study of the possibility of using synthetic aluminosilicate zeolites obtained from recycled solutions of alumina production by the hydro-alkaline method as sorbents of heavy metal ions (copper, zinc and iron), as well as fluorine and chlorine ions from slightly acidic aqueous solutions. Natural zeolite and graphite were used as comparison samples under the same conditions. The chemical qualitative and quantitative composition, morphology of the initial reagents and the resulting solutions were studied. It has been established that synthetic zeolite exhibits sorption properties with respect to heavy metal ions that exceed the indicators under the same conditions for comparison objects. Also, positive results were obtained during the sorption of chlorine and fluorine ions. The conducted studies allow us to recommend the obtained samples for further research in order to introduce it not only for the extraction of various ions from aqueous solutions, but also for use in various industries.

Keywords

• wastewater treatment
• synthetic zeolite
• sorption
• heavy metals
• aluminosilicate