Glyceryl trinitrate and caprylic acid for the mitigation of the Desulfovibrio vulgaris biofilm on C1018 carbon steel

2016 ◽  
Vol 32 (2) ◽  
Author(s):  
Y. Li ◽  
P. Zhang ◽  
W. Cai ◽  
J. S. Rosenblatt ◽  
I. I. Raad ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Glyceryl Trinitrate ◽  
Caprylic Acid ◽  
Desulfovibrio Vulgaris

scholarly journals Microbial Corrosion of API 5L X-70 Carbon Steel by ATCC 7757 and Consortium of Sulfate-Reducing Bacteria

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Arman Abdullah ◽  
Nordin Yahaya ◽  
Norhazilan Md Noor ◽  
Rosilawati Mohd Rasol
Keyword(s):  
Weight Loss ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
Sulfate Reducing Bacteria ◽  
Desulfovibrio Vulgaris ◽  
Corrosion Morphology ◽  
Sulfate Reducing ◽  
Weight Loss Method ◽  
Loss Method ◽  
Reducing Bacteria

Various cases of accidents involving microbiology influenced corrosion (MIC) were reported by the oil and gas industry. Sulfate reducing bacteria (SRB) have always been linked to MIC mechanisms as one of the major causes of localized corrosion problems. In this study, SRB colonies were isolated from the soil in suspected areas near the natural gas transmission pipeline in Malaysia. The effects of ATCC 7757 and consortium of isolated SRB upon corrosion on API 5L X-70 carbon steel coupon were investigated using a weight loss method, an open circuit potential method (OCP), and a potentiodynamic polarization curves method in anaerobic conditions. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were then used to determine the corrosion morphology in verifying the SRB activity and corrosion products formation. Results from the study show that the corrosion rate (CR) of weight loss method for the isolated SRB is recorded as 0.2017 mm/yr compared to 0.2530 mm/yr for ATCC 7757. The Tafel plot recorded the corrosion rate of 0.3290 mm/yr for Sg. Ular SRB and 0.2500 mm/yr forDesulfovibrio vulgaris. The results showed that the consortia of isolated SRB were of comparable effects and features with the single ATCC 7757 strain.

Long-term survival of Desulfovibrio vulgaris on carbon steel and associated pitting corrosion

2015 ◽  
Vol 90 ◽  
pp. 89-100 ◽  
Author(s):  
Yajie Chen ◽  
Qiong Tang ◽  
John M. Senko ◽  
Gang Cheng ◽  
Bi-min Zhang Newby ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Pitting Corrosion ◽  
Desulfovibrio Vulgaris ◽  
Term Survival ◽  
Long Term Survival

scholarly journals Caprylic Acid and Glyceryl Trinitrate Combination for Eradication of Biofilm

2014 ◽  
Vol 59 (3) ◽  
pp. 1786-1788 ◽  
Author(s):  
Joel Rosenblatt ◽  
Ruth A. Reitzel ◽  
Issam Raad
Keyword(s):  
Antibiotic Resistance ◽  
Glyceryl Trinitrate ◽  
Broad Spectrum ◽  
Caprylic Acid ◽  
Gram Positive ◽  
Gram Negative ◽  
Antimicrobial Treatments ◽  
Synergistic Combinations

ABSTRACTThere is a growing need for biocompatible, broad-spectrum, nonantibiotic, antimicrobial treatments because of the frequent ineffectiveness of antibiotics against biofilms and the increasing incidence of antibiotic resistance. In this study, we demonstrate rapid and complete biofilm eradication in anin vitromodel with synergistic combinations of glyceryl trinitrate and caprylic acid against resistant Gram-positive, Gram-negative, and fungal biofilms.

The influence of Desulfovibrio vulgaris on the efficiency of imidazoline as a corrosion inhibitor on low-carbon steel in seawater

2008 ◽  
Vol 54 (1) ◽  
pp. 86-90 ◽  
Author(s):  
Carlos A. González-Rodríguez ◽  
Francisco J. Rodríguez-Gómez ◽  
Joan Genescá-Llongueras
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Low Carbon Steel ◽  
Desulfovibrio Vulgaris ◽  
Low Carbon

Microbiologically Induced Corrosion Monitoring Using Open-Circuit Potential (OCP) Measurements

2015 ◽  
Vol 227 ◽  
pp. 294-297 ◽  
Author(s):  
Rosilawati Mohd Rasol ◽  
Akrima Abu Bakar ◽  
Norhazilan Md Noor ◽  
Yahaya Nordin ◽  
Mardhiah Ismail
Keyword(s):  
Carbon Steel ◽  
Open Circuit Potential ◽  
Corrosion Potential ◽  
Control Sample ◽  
Desulfovibrio Desulfuricans ◽  
Open Circuit ◽  
Metal Loss ◽  
Desulfovibrio Vulgaris ◽  
Corrosion Monitoring ◽  
Microbiologically Induced Corrosion

This study investigates how sulfate-reducing bacteria (SRB) influence the process of microbiologically induced corrosion (MIC) of carbon steel by measuring corrosion potential using open-circuit potential (OCP) measurements. MIC is mainly influenced byDesulfovibrio vulgaris, formerly known asDesulfovibrio desulfuricans subsp. Desulfuricans, deposited asspirillum desulfuricans, which produces D(-)-lactate dehydrogenase. This strain was recommended by ATCC to be used in the tests described in ASTM. A pure colony of SRB was isolated from the Baram and Sungai Ular areas in Malaysia. An evaluation of SRB growth was performed during the test in the inoculated medium anaerobically at 37 ̊. The results showed that the corrosion potentialEocincreases in the presence of SRB in pure and mixed cultures as compared to the control sample. These results indicate that the SRB caused the metal loss on the carbon steel surface through direct corrosive action of the H2S generated by the bacteria during their metabolic process of reducing sulfates to the sulfide form.

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