Corrosion features microorganisms

Chemical treatment (use of biocides) not only must consider cost effectiveness and broad-spectrum features, but also it must be compatible with environmental rules and regulations. This means that the operators are not allowed to use any concentration of any type of biocide they wish. It must also be noted that as intelligent biocides have not (yet) been invented, the biocide cannot differentiate between corrosion-enhancing bacteria and other types of microorganisms and macroorganisms. This will limit application of biocides in industries such as offshore platforms. 

As mentioned earlier, the common feature of these models is that they look at MIC as a whole without particularly focusing on a given type of microorganism/macroorganism. In this respect, they tend to be more generalized in their universe of discourse in the sense that MIC is taken as a possibility among other corrosion processes and factors that can happen in a system. 

There are large numbers of reported case histories of MIC on stainless steel in water and aqueous waste systems. They are related to different industrial applications such as freshwater storage and circulation systems in nuclear power plants [103, 113,116,142] and cooling water systems in chemical process industries [117,118]. There are basically three cases (a) crevice corrosion under unexpected deposits, (b) sensitivity of pitting and crevice corrosion to trace of H2S, and (c) crevice corrosion in natural seawater. Most of these reports are not well documented concerning the microorganisms involved in the process. However, some general features are... 

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