A Short Communication on the Corrosion Behavior, O2 Reduction and Methanol Oxidation Activity of Stainless Steel 304 After Biofilm Formation in Blacksea Water

Yıl 2012, Cilt: 25 Sayı: 2, 477 - 483, 17.04.2012

Niyazi Tapan Merve Zan

Öz

Corrosion inhibition, O
2
 reduction and methanol oxidation activities of biofilm (BF) covered SS304 were observed by potentiostatic and potentiodynamic measurements. Corrosion inhibition character of BF grown in Black sea water can be clearly seen in pitting and activation region in alkaline environment. And in highly acidic environment, corrosion inhibition can be seen by anodic dissolution peak shift. O
reduction and methanol oxidation can be observed by the increase in negative currents for the potential values less than -0.6V vs. SCE and by the increase in positive currents greater than 0.4 V vs. SCE.
Key Words: Biofilm, corrosion, methanol oxidation, oxygen reduction
2 Corrosion inhibition, O₂ reduction and methanol oxidation activities of BF covered SS304 were observed by potentiostatic and potentiodynamic measurements. Corrosion inhibition character of BF grown in Black sea water can be clearly seen in pitting and activation region in alkaline environment. And in highly acidic environment, corrosion inhibition can be seen by anodic dissolution peak shift. O₂ reduction and methanol oxidation can be observed by the increase in negative currents less than -0.6V vs. SCE and by the increase in positive currents greater than 0.4 V vs. SCE.

Anahtar Kelimeler

Biofilm, corrosion, methanol oxidation, oxygen reduction

Kaynakça

• Ronald M.,Handbook of Microbiological media3rd Ed., CRC Pres, (2004).
• Dumas,C., Mollica, A., Feron, D., Basseguy, R., Etcheverry, L., Bergel, A., “Checking graphite and stainless anodes with an experimental model of marine Technology, 99, 8887-8894,(2008). cell”, Biosource
• Erable,B., Bergel, A., “First air tolerant effective stainless steel microbial anode obtained from a natural marine biofilm” , Bioresource Technology 100, 3302-3307,(2009).
• Bergel, A., Feron, D., Mollica, A., “Catalysis of oxygen reduction in PEM fuel cell by seawater biofilm”, Electrochemistry Communications, 7, 900-904,(2005).
• Dumas, C., Mollica, A., Feron, D., Basseguy, R., Etceverry, L., Bergel, A., “Marine microbial fuel cell:use of stainless steel electrodes as anode and cathode materials”, Electrochimica Acta, 53, 468- 473,(2007).
• Erable, B., Vandecandelaere, I., Faimali, M., Delia, M-L., Etcheverry, L., “Marine aerobic biofilm Bioelectrochemistry, 78, 51-56,(2010). catalyst”,
• Faimali, M., Chelossi, E., Garaventa, F., Corra, C.,Greco, G., Mollica, A., “Evolution of oxygen reduction current and biofilm on stainless steels cathodically polarized in natural aerated seawater”, Electrochimica Acta 54, 148-153,(2008).
• Dagbert, C., Meylheuc, T., Bellon-Fontaine, M- N., “ Corrosion behaviour of AISI 304 stainless steel in presence of a biosurfactant produced by Pseudomonas fluorecens”,Electrochimica Acta, 51, 5221-5227,(2006).
• Duan, J., Wu, S., Zhang, X., Huang, G.,Du, M.,Hou, B., “ Corrosion of carbon steel influenced by anaerobic biofilm in natural seawater” , Electrochimica Acta 54, 22-28, (2008).
• Castaneda, H., Benetton, X.D., “ SRB-biofilm influence in active corrosion sites formed at the steel-electrolyte interface when exposed to artificial seawater conditions”, Corrosion Science 50, 1169-1183, (2008).
• Pedersen, K., “Factors Regulating Microbial Biofilm Development in a System with Slowly Flowing Seawater”, Appl. Environ. Microbiol., 44, 1196-1204,(1982).
• Ravikumar, M.K., Balasubramanian, T.S., Shukla, A.K., Venugopalan, S., “A cyclic voltammetric study on the electrocatalysis of alkaline iron- electrode Electrochemistry, 26,1111-1115,(1996). of Applied
• Babic, R., Metikos-Hukovic, M., “Oxygen reduction on stainless steel”, Journal of Applied Electrochemistry, 23 ,352-357,(1993).