TY - JOUR
T1 - Influence of Thermophilic Bacteria on Corrosion of Carbon Steel in Hyper Chloride Environment
AU - Elumalai, Punniyakotti
AU - Parthipan, Punniyakotti
AU - Narenkumar, Jayaraman
AU - Sarankumar, Raja Kumaresan
AU - Karthikeyan, Obulisamy Parthiba
AU - Rajasekar, Aruliah
N1 - A. Rajasekar is thankful to the Department of Biotechnology (Government of India) for awarding Ramalingaswami re-entry Fellowship (BT/RLF/Re-entry/17/2012), Also acknowledge the Science and Engineering Research Board, Department of Science and Technology, Government of India (EEQ/2016/000449 and SB/YS/LS-40/2013) and University Grants Commission (MRP-MAJOR-MICRO-2013-31825).
Publisher Copyright:
© 2017, University of Tehran.
PY - 2017/8
Y1 - 2017/8
N2 - The present study evaluates, the oxidation behaviour of thermophilic bacteria Geobacillus thermoparaffinivorans IR2, Geobacillus stearothermophillus IR4 and Bacillus licheniformis MN6 on carbon steel API 5 LX by weight loss, electrochemical studies (impedance and polarization analysis) and surface analysis (X-ray diffraction spectroscopy). The presence of IR2, IR4 and MN6 showed highest corrosion rate (CR) of 2.51, 2.82 and 2.41 mm/year, respectively, than the abiotic control (0.95 mm/year). Whereas in the presence of biocide tetrakis (hydroxymethyl) phosphonium sulphate (THPS) inhibition of the biofilm formation was noticed on the carbon steel and thus reduced the CR of about 0.36, 0.46 and 0.42 mm/year. The electrochemical studies also revealed that higher charge transfer resistance (105 Ω cm2) and solution resistance (6.99 Ω cm2) in the presence of THPS due to the intact protective film on carbon steel surface. Thus, THPS is found to act as an effective candidate towards control microbial influenced corrosion by thermophilic bacteria on carbon steel API5LX in a 36% chloride environment.
AB - The present study evaluates, the oxidation behaviour of thermophilic bacteria Geobacillus thermoparaffinivorans IR2, Geobacillus stearothermophillus IR4 and Bacillus licheniformis MN6 on carbon steel API 5 LX by weight loss, electrochemical studies (impedance and polarization analysis) and surface analysis (X-ray diffraction spectroscopy). The presence of IR2, IR4 and MN6 showed highest corrosion rate (CR) of 2.51, 2.82 and 2.41 mm/year, respectively, than the abiotic control (0.95 mm/year). Whereas in the presence of biocide tetrakis (hydroxymethyl) phosphonium sulphate (THPS) inhibition of the biofilm formation was noticed on the carbon steel and thus reduced the CR of about 0.36, 0.46 and 0.42 mm/year. The electrochemical studies also revealed that higher charge transfer resistance (105 Ω cm2) and solution resistance (6.99 Ω cm2) in the presence of THPS due to the intact protective film on carbon steel surface. Thus, THPS is found to act as an effective candidate towards control microbial influenced corrosion by thermophilic bacteria on carbon steel API5LX in a 36% chloride environment.
KW - Carbon steel
KW - Crude oil reservoir
KW - Microbial influenced corrosion
KW - Thermophilic bacteria
KW - THPS
UR - http://www.scopus.com/inward/record.url?scp=85026881019&partnerID=8YFLogxK
U2 - 10.1007/s41742-017-0031-5
DO - 10.1007/s41742-017-0031-5
M3 - Journal article
AN - SCOPUS:85026881019
SN - 1735-6865
VL - 11
SP - 339
EP - 347
JO - International Journal of Environmental Research
JF - International Journal of Environmental Research
IS - 3
ER -
