Cathodic Protection of Copper Pipes Carrying Saline Water in the Presence of Aerobic Bacteria
DOI:
https://doi.org/10.31699/IJCPE.2008.4.6Keywords:
Sacrificial anode, Cathodic protection, Seawater, Pseudomonas flourescens, microbiological corrosion.Abstract
Rates of zinc consumption during cathodic protection of a copper pipeline carrying saline water were measured by the loss in weight technique. The study of sacrificial anode cathodic protection of short copper tube using zinc strip extended axially in the pipe revealed that : (i) The increase of zinc consumption with time of exposure (1-3 h's) at different flow rates (turbulent flow) (300-600 l/hr) while the temperature , solution concentration and the pH were fixed at 20ºC, 3.5%wt NaCl, and pH=8 respectively in absence and presence of bacteria.(ii)Increase of zinc consumption with flow rates (300-600 l/hr) at different temperatures (10-40ºC) while solution concentration and time of exposure were fixed at 3.5 %wt NaCl and 3hr's respectively, in absence and presence of bacteria. (iii) Increase of zinc consumption with flow rates (300-600l/hr) at different solution concentrations (1-3.5 %wt NaCl) while the time of exposure and temperature were fixed at 3h's and 30ºC respectively in absence and presence of bacteria. Generally the Zn consumption during cathodic protection ranges from (2.424- 26.741 g/m2) and (5.352-27.296g/m2) in absence and presence of bacteria respectively.
References
- Pope.D and Morris.E , materials performance, vol.34, p24, No.5,Nace International ,May(1995).
- Roberge, R. P (1999), "Handbook of corrosion engineering", copyright McGraw-Hill, 1st adition.
- Shrier (1), L. L (1994), "Corrosion 1, corrosion control", 3rd edition, Newnes-Butterworth.
- Ryan, K.J;Ray, C.G (2004) Sherris Medical microbiology,4th ed.,
- Kenneth., Todar university of Wisconsin-Madison, department of Bacteriology, (2004).
- Gonzales, B., Viuna,R.,J.,Bacteria 171,2401-2405, (1989).
- Toutain CM, Caiazza NC, O’Toole GA. (2004). Molecular basis of biofilm development by pseudomonads. In: Ghannoum Mand O’Toole GA, editors. Microbial biofilms. Washington DC: ASM Press. 43–63.
- Valcarce.M.B, De Sanchez.S.R, Vazquez, Corrosion Science 47(795-809),(2004).
- Duddridge .J.E, Kent.C.A, Laws.J.F, Biochemistry group, Engineering Sciences Division, United Kingdom, (2004).
- Busalmen J.P, De Sanchez,S.r and Schiffrin D.J, American Society for microbiology, v.64(10), (1998).
- Yuan.S.J, Amy M.F.Choong and S.O.pehkonen ,(1995) , Department of chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576.
- Cussler, E. L., "Mass transfer in fluid systems", Cambridge University press, Cambridge, UK,(1984).
- Konsowa, A. H. and El-Shazly, A. A., Elsevier, Desalination, 153, pp 223-226, (2002).
- R. R. Zahran and G. H. Sedahmed, Chemical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt, 1997.
- An introduction, Corrosion Basics, p.151, N.A.C.E.(1984).
- Kuntiya , A., Nicolella, C., Pyle, L. and Poosaran, N. Songklanakarin J. Sci. Technol., 27(5) : 1073-1082 , (2005).
- Ross, T.K. and Hitchen, B.P.L., Corros.Sci., 1, 65(1961).
- Mahato, B.K., Voora,S.K.and Shemitt,L.W., Corros.Sci., 8,173 (1968).
- Jhobalia.M.Chintan, AnHu, Tingyue Gu and Srdjan Nesic,Athens,OH 45701,(2005).
- Stoodley, Z. Lewandowski, J. D. Boyle and H. M. Lappin-Scott, (2000) Structural deformation of bacterial biofilms caused by short-term fluctuations in fluid shear: An in situ investigation of biofilm rheology, Biotechnology and Bioengineering, 65, 83-92.
- Jie wen,kaili Zhao,Tingyue Gu and Srdjan Nesic , Athens,ohio 45701,(2005).
- Characklis.W.G , Marshall.K.C,and Wiley, New York,pp.523-584,(1990).
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
