BIO-CONTROL CORROSION RATES MODEL EQUATIONS FOR BIOCORROSION PARAMETERS IN OIL INDUSTRIES
Interaction with the corrosion products to prevent natural film forming characteristics on the corroding metals that would inhibit further corrosion was studied. This organism responsible for corrosion in pipelines slows down production, degrades the quality of the products, poses potential health hazards to people in contaminated areas when it spills, and is extremely costly for the oil industry. This study aimed to determine the corrosion rates model equations on the coupons for the biocides used in the experimental study Four treatments were used for the study to compare the biofilm clusters on steel coupons treated with the chemicals presently used by the petroleum industries to control corrosion. Process parameters considered were weight loss of the respective steel coupons treated and the bacterial growth on the corroding substrate The treatment used for this study are formaldehyde, polyamine, diamine and biguanide. Steel coupons used for the experiment is rectangular AMS mild steel coupons with dimension of 1.27cm x 7.62cm x 0.16cm and weighs 49.60g. The coupons were placed in the experimental pipes. The coupons were degreased with ethanol and rinsed with acetone before insertion. The pipes were run in a circulation mode for one day (1 day) under anaerobic condition and then inoculated. MATLAB computational software was used for the determining the rate of metal removal using the conventional weight loss equation. Results revealed that the weight loss in the coupon treated with biagunides is 0.9g during the period under study which can be assumed negligible compared to the losses in encountered in other coupons subjected to the rest of the treatment with trendline equation of y = -3exp-13x5+6exp-13x4 -3exp-07x3+7exp-05x2+0.004x+0.122. Equations generated for the bacteria activities was observed to have polynomial functions in all the chemicals used for the control though of various degrees. Based on the experimental results, biagunides possess a higher control potential for controlling corrosion due to microorganisms.
Authors : Iweriolor, S. and Ugwuegbu, D.C.
Category : Open Access Volume (Issue) : 9(1) Date Uploaded : 28th December 2023