Recuperación de metales pesados por métodos físico-químicos en piscinas de lodos (cortes de perforación de pozos petroleros) en la empresa Plusambiente S.A.

Abstract

The objective was to recover heavy metals by physical- chemical method in sludge pools (oil well drilling) in Plusambiente S. A Company. Initially, the sludge was characterized based on Environmental Regulation for Hydrocarbon Activities (RAOH) D. E. 1215, obtaining the following values: Barium (Ba) 1.78 mg/l; Cadmium (Cd) 0.10 mg/l; Chromium (Cr) 0.47 mg/l; Nickel (Ni) 0.97 mg/l; Lead (Pb) 0.37 mg/l; Vanadium (V) 0.47 mg/l. In the second sampling the characterization showed the following values: (Ba) 2.37 mg/l; Cadmium (Cd) 0.19 mg/l; Chromium (Cr) 1.13 mg/l; Nickel (Ni) 0.56 mg/l; Lead (Pb) 0.39 mg/l; Vanadium (V) 0.68 mg/l. For the third sampling the following values are obtained: (Ba) 2.05 mg/l; Cadmium (Cd) 0.19 mg/l; Chromium (Cr) 1.20 mg/l; Nickel (Ni) 0.56 mg/l; Lead (Pb) 0.35 mg/l; Vanadium (V) 0.40 mg/l. Once the characterization was carried out, the sequential extraction with the BCR method was performed, where the effectiveness of the characterization was verified, since a significant metal mining considered in this investigation was observed. For the first sampling (Ba) 1.53 mg/l ; Cadmium (Cd) 0.09 mg/l; Chromium (Cr) 0.35 mg/l; Nickel (Ni) 0.88 mg/l; Lead (Pb) 0.33 mg/l; Vanadium (V) 0.4 mg/l. For the second sample the extraction values were: (Ba) 2.31 mg/l ; Cadmium (Cd) 0.13 mg/l; Chromium (Cr) 1.02 mg/l; Nickel (Ni) 0.45 mg/l; Lead (Pb) 0.38 mg/l; Vanadium (V) 0.43 mg/l. For the third sample the extraction values were: (Ba) 1.99 mg/l ; Cadmium (Cd) 0.13 mg/l; Chromium (Cr) 0.17 mg/l; Nickel (Ni) 0.5 mg/l; Lead (Pb) 0.33 mg/l; Vanadium (V) 0.37 mg/l. It is concluded that the heavy metals found in sediments were recovered by sequential extraction of the BCR method. It is recommended for future research to carry out the metal mining with sediments containing other heavy metals in order to expand the environmental benefits of this method.