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Laboratory Investigation of Biocide Treated Waters to Inhibit Biofilm Growth and Reduce the Potential for MIC

Picture for Laboratory Investigation of Biocide Treated Waters to Inhibit Biofilm Growth and Reduce the Potential for MIC
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Product Number: 51321-16209-SG
Author: Susmitha Purnima Kotu/Christopher Kagarise/Richard B. Eckert/Torben Lund Skovhus
Publication Date: 2021
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Introducing water into pipelines for various applications, such as hydrotesting, long termlayup, hydraulic fracturing, water injection, and other production related activities poses the threat of microbiologically influenced corrosion (MIC) when conditions are favorable. The focus of this paper is to outline a test method to evaluate thepotential for MIC with untreated waters and subsequently assess the effectiveness of biocides to inhibit biofilm growth and mitigate MIC. The changes in the microbial activity, abundance, and diversity in the biofilm along with pitting and general corrosion rates on the carbon steelare used as evaluation techniques in this laboratory test method.The results of this work demonstrate the importance of using biofilms for biocide evaluations and could be used to support new industry standards for evaluating the effectiveness of biocides for MIC control, rather than basing performance on planktonic kill studies.

 

Introducing water into pipelines for various applications, such as hydrotesting, long termlayup, hydraulic fracturing, water injection, and other production related activities poses the threat of microbiologically influenced corrosion (MIC) when conditions are favorable. The focus of this paper is to outline a test method to evaluate thepotential for MIC with untreated waters and subsequently assess the effectiveness of biocides to inhibit biofilm growth and mitigate MIC. The changes in the microbial activity, abundance, and diversity in the biofilm along with pitting and general corrosion rates on the carbon steelare used as evaluation techniques in this laboratory test method.The results of this work demonstrate the importance of using biofilms for biocide evaluations and could be used to support new industry standards for evaluating the effectiveness of biocides for MIC control, rather than basing performance on planktonic kill studies.

 

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