Electrorremediación de suelos agrícolas contaminados con plomo, Carabayllo

Abstract

The research set as objectives the remediation of agricultural soils contaminated with lead that according to a preliminary analysis presented 99.7 mg / kg. The place where these soils are located corresponds to the area of ​​Roma Baja, Carabayllo district, Lima. From this place the samples were obtained to carry out the scientific research work seeking its remediation by means of the electroremediation technique. Electroremediation is the technique where electric current is used accompanied by electrodes and adding some type of electrolyte for the mobilization of anions and cations. The experimental work consisted of three stages (27 experimental units) where each stage comprised 9 experimental units, these were subjected to different times and current intensity. For the investigation, 45 kg of agricultural soil sample, 57 steel electrodes, two types of organic acetic acid and ammonium acetate electrolytes were used, both at 0.001 M, in high density polyethylene cells. The result in percentage of lead removal was presented in the third stage of treatment after 30 minutes at 30V, being 55.99% in relation to the soil ECA (70 mg/kg). In this way it was verified that the proposed method is feasible for its application to solve contaminated soils.