D-Tyrosine enhancement of microbiocide mitigation of carbon steel corrosion by a sulfate reducing bacterium biofilm.

Unsal T., Wang D., Kumseranee S., Punpruk S., Gu T.

World journal of microbiology & biotechnology, cilt.37, ss.103, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 37
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s11274-021-03072-9
  • Dergi Adı: World journal of microbiology & biotechnology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, ABI/INFORM, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Compendex, EMBASE, Environment Index, Food Science & Technology Abstracts, MEDLINE, Veterinary Science Database
  • Sayfa Sayıları: ss.103
  • Anahtar Kelimeler: Biofilm, d-Amino acid, Microbiologically influenced corrosion, Sulfate-reducing bacteria, 2, 2-Dibromo-3-nitrilopropionamide, MICROBIOLOGICALLY INFLUENCED CORROSION, SOURCE STARVATION, BIOCORROSION
  • İstanbul Üniversitesi Adresli: Evet

Özet

Microbiocides are used to control problematic microorganisms. High doses of microbiocides cause environmental and operational problems. Therefore, using microbiocide enhancers to make microbiocides more efficacious is highly desirable. 2,2-dibromo-3-nitrilopropionamide (DBNPA) is a popular biodegradable microbiocide. d-Amino acids have been used in lab tests to enhance microbiocides to treat microbial biofilms. In this investigation, d-tyrosine was used to enhance DBNPA against Desulfovibrio vulgaris biofilm on C1018 carbon steel. After 7 days of incubation, the mass loss of coupons without treatment chemicals in the ATCC 1249 culture medium was found to be 3.1 +/- 0.1 mg/cm(2). With 150 ppm (w/w) DBNPA in the culture medium, the mass loss was reduced to 1.9 +/- 0.1 mg/cm(2) accompanied by a 1-log reduction in the sessile cell count. The 150 ppm DBNPA + 1 ppm d-tyrosine combination attained an extra 3-log reduction in sessile cell count and an additional 30% reduction in mass loss compared with 150 ppm DBNPA only treatment. The combination also led to a smaller maximum pit depth. Linear polarization resistance (LPR), electrochemical impedance spectrometry (EIS), and potentiodynamic polarization (PDP) tests corroborated the enhancement effects.