Title of article :
Water-soluble inhibitor on microbiologically influenced corrosion in diesel pipeline
Author/Authors :
Muthukumar، نويسنده , , N. and Maruthamuthu، نويسنده , , Wilbert S. and Palaniswamy، نويسنده , , N.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
11
From page :
260
To page :
270
Abstract :
The effect of water-soluble corrosion inhibitor on the growth of bacteria and its corrosion inhibition efficiency were investigated. Corrosion inhibition efficiency was studied by rotating cage test and flow loop techniques. The nature of biodegradation of corrosion inhibitor was also analyzed by using Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (NMR) and Gas chromatography and mass spectrometer (GC–MS). The bacterial isolates (Serratia marcescens ACE2, Bacillus cereus ACE4) have the capacity to degrade the aromatic and aliphatic hydrocarbon present in the corrosion inhibitor. The degraded products of corrosion inhibitor and bacterial activity determine the electrochemical behaviour of API 5LX steel. The influence of bacterial activity on degradation of corrosion inhibitor and its influence on corrosion of API 5LX have been evaluated by employing weight loss techniques and electrochemical studies. The main finding of this paper is that the water-soluble corrosion inhibitor is consumed by the microbial action, which contributes to the decrease in inhibitor efficiency. The present study also emphasis the importance of evaluation of water-soluble corrosion inhibitor in stagnant model (flow loop test) and discusses the demerits of the water-soluble corrosion inhibitors in petroleum product pipeline.
Keywords :
Rotating cage , Water-soluble corrosion inhibitor , Biodegradation , Diesel pipeline , Flow loop method , Microbiologically Influenced Corrosion
Journal title :
Colloids and Surfaces B Biointerfaces
Serial Year :
2006
Journal title :
Colloids and Surfaces B Biointerfaces
Record number :
1967889
Link To Document :
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