Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has b... more Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has been confirmed. The last studied case corresponds to the water well of the La Rioja Regional Faculty of the National Technological University (UTN), where the water well facilities showed signs of this phenomenon.These microorganisms catalyze the iron (and magnesium) oxidation reactions, solubilizing or solubilizing and precipitating the metal. Confirming the existence of the MIC phenomenon is essential to mitigate or solve the problem.The laboratory work consisted in processing pipe and pump samples extracted after the well ceased to be used, at three initial temperatures and with different culture media, trying to cultivate, reproduce, and isolate and identify the different species.Thus, through culture methodology, the existence of a mixed flora featuring iron bacteria and sulfate-reducing bacteria was confirmed.Complementary Scanning Electron Microscopy (SEM) and Energy-dispersive X-r...
This work consisted on the electrolytic treatment of an industrial waste (mud) from a graphical c... more This work consisted on the electrolytic treatment of an industrial waste (mud) from a graphical company, having important contents of several metals. The muds were subjet to an electrolytic treatament by applying a potencial defference of ten volts (direct current). An electrolytic cell with graphite electrodes, including two compartments for the electrodes, was used. Distilled water was added daily to mantein the initial level in order to compensate evaporation losses. pH and Eh were monitored; the experimentstarted at nearly neutral pH and was run until local pH values were estabilized. Forty elementswere determined and the information was processed with statistical software Surfer 8. The results show diverse behavior according to at least three main patterns: displacement towards the cathode, displacement towards the anode, lateral displacement or irregular. Under these conditions, the results demonstrate that the used process is not absolutely applicable to decontaminate the pro...
Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has b... more Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has been confirmed. The last studied case corresponds to the water well of the La Rioja Regional Faculty of the National Technological University (UTN), where the water well facilities showed signs of this phenomenon.These microorganisms catalyze the iron (and magnesium) oxidation reactions, solubilizing or solubilizing and precipitating the metal. Confirming the existence of the MIC phenomenon is essential to mitigate or solve the problem.The laboratory work consisted in processing pipe and pump samples extracted after the well ceased to be used, at three initial temperatures and with different culture media, trying to cultivate, reproduce, and isolate and identify the different species.Thus, through culture methodology, the existence of a mixed flora featuring iron bacteria and sulfate-reducing bacteria was confirmed.Complementary Scanning Electron Microscopy (SEM) and Energy-dispersive X-r...
Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has b... more Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has been confirmed. The last studied case corresponds to the water well of the La Rioja Regional Faculty of the National Technological University (UTN), where the water well facilities showed signs of this phenomenon.These microorganisms catalyze the iron (and magnesium) oxidation reactions, solubilizing or solubilizing and precipitating the metal. Confirming the existence of the MIC phenomenon is essential to mitigate or solve the problem.The laboratory work consisted in processing pipe and pump samples extracted after the well ceased to be used, at three initial temperatures and with different culture media, trying to cultivate, reproduce, and isolate and identify the different species.Thus, through culture methodology, the existence of a mixed flora featuring iron bacteria and sulfate-reducing bacteria was confirmed.Complementary Scanning Electron Microscopy (SEM) and Energy-dispersive X-r...
This work consisted on the electrolytic treatment of an industrial waste (mud) from a graphical c... more This work consisted on the electrolytic treatment of an industrial waste (mud) from a graphical company, having important contents of several metals. The muds were subjet to an electrolytic treatament by applying a potencial defference of ten volts (direct current). An electrolytic cell with graphite electrodes, including two compartments for the electrodes, was used. Distilled water was added daily to mantein the initial level in order to compensate evaporation losses. pH and Eh were monitored; the experimentstarted at nearly neutral pH and was run until local pH values were estabilized. Forty elementswere determined and the information was processed with statistical software Surfer 8. The results show diverse behavior according to at least three main patterns: displacement towards the cathode, displacement towards the anode, lateral displacement or irregular. Under these conditions, the results demonstrate that the used process is not absolutely applicable to decontaminate the pro...
Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has b... more Recently, in the city of La Rioja, the Microbiologically-Induced Corrosion (MIC) phenomenon has been confirmed. The last studied case corresponds to the water well of the La Rioja Regional Faculty of the National Technological University (UTN), where the water well facilities showed signs of this phenomenon.These microorganisms catalyze the iron (and magnesium) oxidation reactions, solubilizing or solubilizing and precipitating the metal. Confirming the existence of the MIC phenomenon is essential to mitigate or solve the problem.The laboratory work consisted in processing pipe and pump samples extracted after the well ceased to be used, at three initial temperatures and with different culture media, trying to cultivate, reproduce, and isolate and identify the different species.Thus, through culture methodology, the existence of a mixed flora featuring iron bacteria and sulfate-reducing bacteria was confirmed.Complementary Scanning Electron Microscopy (SEM) and Energy-dispersive X-r...
Uploads
Papers by Vicente Calbo