Electrochemical technology against fouling and corrosion for seawater cooling system
Abstract
Electrochemical technology against fouling and corrosion uses an impressed current on copper and aluminum anode pairs. Under the eff ect of direct current, the copper ions are released slowly with a very small concentration, which can eff ectively prevent the growth of marine organisms and control the fouling process inside the pipeline and device systems. Besides, the aluminum ions are released into sea water to form hydroxide, which creates fl oc and will cover the internal surfaces of pipes to suppress settling and corrosion. The obtained study results show that with a current density of 1.25mA/cm2 for copper anode and 1.5mA/cm2 for aluminum anode, the seawater cooling system can be eff ectively protected against bio-fouling and corrosion.
References
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ASTM International. Standard test method for determination of corrosion and fouling tendency of cooling water under heat transfer conditions. ASTM D4778-10. 2010.
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