Biodegradation of corrosion inhibitors and their influence on petroleum product pipeline.
The present study enlightens the role of Bacillus cereus ACE4 on biodegradation of commercial corrosion inhibitors (CCI) and the corrosion process on API 5LX steel. Bacillus cereus ACE4, a dominant facultative aerobic species was identified by 16S rDNA sequence analysis, which was isolated from the corrosion products of refined diesel-transporting pipeline in North West India. The effect of CCI on the growth of bacterium and its corrosion inhibition efficiency were investigated. Corrosion inhibition efficiency was studied by rotating cage test and the nature of biodegradation of corrosion inhibitors was also analyzed. This isolate has the capacity to degrade the aromatic and aliphatic hydrocarbon present in the corrosion inhibitors. The degraded products of corrosion inhibitors and bacterial activity determine the electrochemical behavior of API 5LX steel.
Biocorrosion, Corrosion Protection Division, Central Electrochemical Research Institute, Karaikudi-630 006, India.
Aruliah
A
Rajasekar
Sundaram
S
Maruthamuthu
Narayanan
N
Palaniswamy
Annamalai
A
Rajendran
D001409:Bacillus cereus / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002264:Carboxylic Acids / Q000378:metabolism*; D003343:Corrosion; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D020459:Genes, rRNA; D006841:Hydrocarbons, Aromatic / Q000378:metabolism; D007194:India; D008969:Molecular Sequence Data; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D013232:Steel / Q000737:chemistry
D002264:Carboxylic Acids; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D006841:Hydrocarbons, Aromatic; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D013232:Steel