Microbial corrosion of galvanized steel in a simulated recirculating cooling tower system

Ilhan-Sungur E., Cotuk A.

CORROSION SCIENCE, cilt.52, sa.1, ss.161-171, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 52 Sayı: 1
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.corsci.2009.08.049
  • Dergi Adı: CORROSION SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.161-171
  • Anahtar Kelimeler: Zinc, SEM, Microbiological corrosion, SULFATE-REDUCING BACTERIA, LOW-ALLOY STEEL, BIOFILM, ENUMERATION, MODEL, ZINC
  • İstanbul Üniversitesi Adresli: Evet

Özet

In this study, mixed species biofilm formation including sulphate reducing bacteria (SRB) on the galvanized steel surfaces and also microbiologically influenced corrosion (MIC) of galvanized steel were observed in a model recirculating cooling water system during 10 months. A biofilm which had a heterogeneous structure formed on galvanized steel coupons. The results suggested that galvanized steel was corroded by microorganisms as well as SRB in the biofilm. Extracellular carbohydrate was degraded and quantities of carbohydrate were positively correlated with the weight loss. The concentrations of zinc in the biofilm showed significant correlations with weight loss, carbohydrate amount and SRB count. (C) 2009 Elsevier Ltd. All rights reserved.