THE USE OF PERMEABLE REACTIVE BARRIERS FOR REMOVAL OF PHOSPHATE FROM GROUND WATERS

Abstract

Permeable reactive barriers represent a promising remediation method for surface and groundwater containing a variety of inorganic and organic pollutants. Phosphate is a nutrient which leads to an extensive water eutrophication. It can be removed from surface and ground waters by means of permeable reactive barriers after using precipitation or adsorption. The aim of this study was to evaluate the permeable reactive barriers efficiency in the case of phosphate removal from groundwaters. In this paper, clay mold soil type was used as a reactive permeable matrix for ground water phosphate removal. Also, the influence of the main operational parameters, namely: pH, initial solution concentration and contact time on the thermodynamic system behavior was investigated. The experimental results obtained were interpreted with the help of Temkin and Flory-Huggins adsorption isotherms.