Tri-Sodium Citrate as Corrosion and Scale Inhibitor of Mild Steel in Synthetic Cooling Water System

Tri-Sodium Citrate as Corrosion and Scale Inhibitor of Mild Steel in Synthetic Cooling Water System

Rachid Touir, Hayat Larhzil
Copyright: © 2020 |Pages: 24
DOI: 10.4018/978-1-7998-2775-7.ch002
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Abstract

In this study, scale inhibition performance Trisodium citrate (TSC) was studied using static scale inhibition method, and its corrosion inhibition performance was also investigated by weight loss method and electrochemical measurement. Result showed that TSC could form a layer of corrosion and scale produTSC on mild steel surface in synthetic cooling water. Its inhibition increases with concentration and reaches a maximum of 89% and 95% at 10-3 M for corrosion and scale, respectively. It is noted that TSC takes its inhibition at high temperature and act by physic-sorption process. It is found that the TSC obey to the Langmuir isotherm. Scanning electron microscopy (SEM) showed that TSC inhibits the scale and corrosion by the formation of a protective layer on the mild steel surface.
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Main Focus Of The Chapter

As a result, the current trend for inhibitors use is towards more environmental-friendly ‘green’ chemicals. In response to environmental guidelines, this book chapter presents the results of ‘green’ chemicals study that was undertaken to investigate the ability of new non-toxic inhibitors (Tri-sodium citrate) to inhibit the corrosion and scale problems found in cooling systems. The goal of the present book chapter is to study the effect of Tri-sodium citrate on the corrosion and scale processes in cooling media under conditions similar to typical operating conditions using chemical and electrochemical measurements and Scanning electron microscopy analysis. Alternatively, the influence of temperature and the mechanism of TSC on mild steel were also studied and discussed.

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