Control of Corrosion and Microbial Corrosion of Steel Pipelines in Salty Environment by Polyacrylamide

摘要

The polyacrylamide was investigated for controlling of corrosion and microbial corrosion of mild steel in saltymedia. Both the corrosion inhibition effciency and biocidal activity are measured at different concentrations ofpolyacrylamide. The electrochemical measurements are used to monitor the corrosion results and the serial dilutionmethod is used to detect the biocidal activity. The results showed that the polyacrylamide is improved the biocidalactivity corrosion resistance for mild steel with increasing the concentration. The biocidal activity was subjected tothe planktonic and sessile bacteria and the obtained results proved that the killing effect of polyacrylamide is showshigher effciency in planketoinc more than the sessile bacteria. The corrosion data proved that, the inhibitor showsacceptable effect against corrosion in chloride solution and the effect is also depends on the inhibitor concentration.The best result in both corrosion and microbial corrosion is obtained at concentration of 15 ppm.