Efficiency of actinomycetos in the removal of heavy metals present in contaminated soils from the district of Quiruvilca

Abstract

The use of microorganisms as a restoration technique has achieved surprising results by increasing the vigor of the soil resulting from mining activity. The objective of this research was to demonstrate the efficiency of the concentration of Actinomycetos on the removal of heavy metals in contaminated  soils. The experiment was carried out at the National University of Trujillo. It was constituted by two actinomyceto treatments + contaminated soil and one control. The results showed of the characterization of the soil was carried out by means of the ICP - OES method, obtaining 23 metals, of which 4 of them present high concentrations: lead (Pb) 747.60, zinc (Zn) 2717.4, arsenic (As) 1120.1 and copper (Cu) 357.3, these results were the initial values before the treatment in which two different concentrations were used: 3x107 and 6x109 in a period of time of 12h, 24h and 36h to evaluate the removal of heavy metals present in contaminated soil in the different treatments. It is concluded that the actinomycete treatment + contaminated soil obtained the best responses, showing that there was greater efficiency at 36h at a concentration of 6x109 UFC/ml, this being the maximum removal value Zn (77.41%), As (48.79%) and Pb (33.1%), and as a minimum value Cu (7.54%).