PHYTOREMEDIATION OF ARSENIC CONTAMINATED SOILS OF THE AMBROLAURI MUNICIPALITY

Phytoremediation technology is environmentally friendly and inexpensive to clean soils of harmful toxins. The study aims to introduce phytoremediation of arsenic in the Racha-Lechkhumi and Kvemo Svaneti regions to restore soil fertility. For this study, three plants, Amaranthus gangeticus, Chenopodium album and Helianthus annuus, were selected for the accumulation and translocation of Arsenic from the contaminated soil. The seeds of selected plants were treated with the bioactivator Biorag to increase the plant's green mass. Plants were sown in May and harvested in August and October. Plants were gathered in their raw state they were dried for two weeks, after drying, the plants (their parts � roots, shoots or a whole plant) were processed by decomposer�Milestone � Start D Microwave system and the total form of arsenic was determined on the Inductively coupled plasma atomic emission spectroscopy - ICP-OES. Several parameters were calculated that affect phytoremediation potential, such as arsenic concentration, bioconcentration factor (BCF), translocation factor (TF) and arsenic content in the total mass of the plant. As a result of the research, it was established that the selected plants can accumulate and remove arsenic from contaminated soil, which is a necessary condition for the successful implementation of phytoremediation. Phytoremediation efficiency was determined, and it was equal to 58.7% (extracted by the plant), while the amount remained in the soil �41.3%. The methods and techniques of mathematical statistics and probability theory were used for the analysis of measurements in the paper.