Metals extraction from polluted soils by using of pillared zeolite and Vicia sativa

Abstract

In phytoremediation process of soils polluted with heavy metals, the use of amendment with different types of fertilizers and biosolids, will increase process efficiency. Uisng of fertilizers assure nutrients for plants, and increases the acces of metals to their aerial parts, and bioaccumulation above allowable limits. Amendement consisting of native volcanic tuff, with high clinoptilolit content, modified by supporting with Al13 polimers, decreased zinc bioavailability about 1.4 - 2.1 times and that of cadmium 1.4 - 3.8 times, in aerial parts of Vicia sativa plant, in first weeks of vegetation. Uisng of pillared zeolite produced advanced decreasing of cadmium access in Vicia sativa roots, and as a consequence a decreasing in aerial parts of plant during advanced vegetation period.