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| Format: | Artículo científico |
| Sprache: | en |
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Universidad del Zulia
2015
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| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=605767212007 |
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Inhaltsangabe:
- Corrosive aggressiveness of water production due to the SRB and CO2 Antonio De Turris Matilde de Romero Sankara Papavinasam Ingeniería CO2 sulphate mackinawite aggressiveness reducing bacteria In this study the corrosive aggressiveness of a production water due to the presence of carbon dioxide (CO2) and sulfate-reducing bacteria (SRB) was investigated, using a rotating cage according to ASTM G202. pH, concentrations of planktonic bacteria, content of sulfides, sulfates, iron, calcium and magnesium were measured every 24 h during the tests, at the end of the experiment sessile bacteria count, weight loss of carbon steel coupons and attack morphology of the surface by scanning electron microscopy were determined. The findings show that at concentrations between 25-100% v/v CO2 in the gas phase on the medium decreased the pH to 4,3 and inhibited the planktonic and sessile SRB growth, and for a 10% CO2, the planktonic SRB increased to ≥ 109 cells/mL and sessile to ≥ 106 cel/cm2. Under this condition, a non-protective iron sulfide (mackinawite) layer formed on the coupon surface which turned out to be non-protective as small pits were detected over the entire surface of the coupon. 2015 artículo científico 0254-0770 https://www.redalyc.org/articulo.oa?id=605767212007 en http://www.redalyc.org/revista.oa?id=6057 Revista Técnica de la Facultad de Ingeniería, Universidad del Zulia application/pdf Universidad del Zulia Revista Técnica de la Facultad de Ingeniería, Universidad del Zulia (República Bolivariana de Venezuela) Num.1 Vol.38