Products tagged with 'd-amino acid'

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51316-7279-Enhanced Biocide Treatment of Corrosive Biofilms

Product Number: 51316-7279-SG

ISBN: 7279 2016 CP

Author: Tingyue Gu

Publication Date: 2016

$20.00

Biocorrosion or microbiologically influenced corrosion (MIC) is a major problem in the oil and gas industry. Biofilms are the culprits of MIC. In this work, D-amino acids were used to enhance two biocides, alkyldimethylbenzylammonium chloride (ADBAC) and tributyl tetradecyl phosphonium chloride (TTPC), to treat a field biofilm consortium on C1018 carbon steel coupons.

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Enhanced Biocide Mitigation of Microbiologically Influenced Corrosion In Enhanced Oil Recovery

Product Number: 51317--9039-SG

ISBN: 9039 2017 CP

Author: RU JIA

Publication Date: 2017

$20.00

MIC is a problem in the oil and gas industry due to seawater injection. Biocides lead to resistance by microbes over time. In this work, D-amino acids were used to enhance the tetrakis (hydroxymethyl) phosphonium sulfate (THPS) biocide against a tough field biofilm consortium.

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Enhanced Biocide Treatment Using D-tyrosine Against Desulfovibrio Vulgaris Corrosion of Carbon Steel

Product Number: 51320-14527-SG

Author: Tuba Unsal, Di Wang, Tingyue Gu, Sith Kumseranee, Suchada Punpruk

Publication Date: 2020

$20.00

Biocides are used to control problematic microorganisms in the oil and gas industry. High doses of biocides cause environmental and operational problems. Therefore, using biocide enhancers to make biocides more effective is highly desirable. 2,2-dibromo-3-nitrilopropionamide (DBNPA) is a popular biocide because it is broad-spectrum, effective, kills microorganisms immediately upon addition, and it degrades rapidly. D-amino acids are natural chemicals that have been used in lab tests to enhance biocides to treat biofilms. In this work, D-tyrosine was used to enhance DBNPA against Desulfovibrio vulgaris biofilm on C1018 carbon steel. After 7 days of incubation, the weight loss of coupons without treatment chemicals in culture medium was found to be 3.1 ± 0.1 mg/cm2. With a treatment of 150 ppm (w/w) DBNPA, the weight loss was reduced to 1.9 ± 0.1 mg/cm2 accompanied by a 1-log reduction in the sessile cell count. The combination of 150 ppm DBNPA + 1 ppm D-tyrosine achieved an extra 3-log reduction in sessile cell counts and an additional 30% reduction in weight loss compared with 150 ppm treatment of only DBNPA. The combination also led to a smaller maximum pit depth. Linear polarization resistance (LPR), potentiodynamic polarization and electrochemical impedance spectrometry (EIS) tests corroborated the enhancement effects.

Products tagged with 'd-amino acid'

51316-7279-Enhanced Biocide Treatment of Corrosive Biofilms

Enhanced Biocide Mitigation of Microbiologically Influenced Corrosion In Enhanced Oil Recovery

Enhanced Biocide Treatment Using D-tyrosine Against Desulfovibrio Vulgaris Corrosion of Carbon Steel

Association for Materials Protection and Performance