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51318-11663-Use of electro chemical method to determine biocide efficiencies of peracid solutions

Picture for Use of electro chemical method to determine biocide efficiencies of peracid solutions
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Compatibilities of SS430 and SS304 alloys were evaluated with high and low peroxide formulations of peracetic acid solutions in the presence of chlorides (0.9% weight). Effect of biofilm on the alloys was evaluated before and after treatments.

 

Product Number: 51318-11663-SG
Author: Yolanda De-Abreu / Ramakrishnan Balasubramanian / Yingrui Zhang / Justin Valenstein
Publication Date: 2018
Industries: Chemical Inhibitors , Science of Corrosion
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$20.00
$20.00

Peracids are multifunctional chemistries that are an equilibrium mix between an organic acid and peroxide. Peracids are widely used as biocides in oil and gas, food and beverage, health care and other industries. In addition to its use as a biocide, peracids are often used for iron sulfide scale dissolution and hydrogen sulfide control.

The performance of peracids as a biocide is dependent on many factors. These factors include the presence of other oxidizable species, temperatures, salinity as well as the metallurgy of the treatment setup. Compatibilities of SS430 and SS304 alloys were evaluated with high peroxide and low peroxide formulations of peracetic acid solutions in the presence of chlorides (0.9% weight). Effect of biofilm on the alloys was evaluated prior and post peracetic acid treatments. Anodic cyclic polarization, electrochemical impedance spectroscopy and surface analysis were used to evaluate the factors that affect the corrosion on metallurgies under treatment conditions. The results suggest that irrespective of the metallurgy, peroxide concentrations in peracid formulations is a key parameter that must be accounted for to determine corrosion potential and provide a strategy for application of these products on different metallurgies.  

Key words: peracids, peracetic acid, peroxide, electrochemical methods, SS430, SS304, anodic cyclic polarization, electrochemical impedance spectroscopy, EIS

Peracids are multifunctional chemistries that are an equilibrium mix between an organic acid and peroxide. Peracids are widely used as biocides in oil and gas, food and beverage, health care and other industries. In addition to its use as a biocide, peracids are often used for iron sulfide scale dissolution and hydrogen sulfide control.

The performance of peracids as a biocide is dependent on many factors. These factors include the presence of other oxidizable species, temperatures, salinity as well as the metallurgy of the treatment setup. Compatibilities of SS430 and SS304 alloys were evaluated with high peroxide and low peroxide formulations of peracetic acid solutions in the presence of chlorides (0.9% weight). Effect of biofilm on the alloys was evaluated prior and post peracetic acid treatments. Anodic cyclic polarization, electrochemical impedance spectroscopy and surface analysis were used to evaluate the factors that affect the corrosion on metallurgies under treatment conditions. The results suggest that irrespective of the metallurgy, peroxide concentrations in peracid formulations is a key parameter that must be accounted for to determine corrosion potential and provide a strategy for application of these products on different metallurgies.  

Key words: peracids, peracetic acid, peroxide, electrochemical methods, SS430, SS304, anodic cyclic polarization, electrochemical impedance spectroscopy, EIS

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