Indirect electrochemical titration of sulfur impurities in industrial phosphoric acid-Reference-Cited by-同舟云学术

Indirect electrochemical titration of sulfur impurities in industrial phosphoric acid

Published:2024-05-08 Issue: Volume: Page:
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Author:

HAMID Fatima Ezzahra¹,Oubaouz Mohamed²,Haddouchy Hassan¹,Oukbab Mustapha²,Loughmari Saliha²,Tahiri Youness²,Elqouatli Salah Eddine¹,Chtaini Abdelilah²,Erradi Elmostafa²

Affiliation:

1. Faculty of Sciences and Technology, Moulay Ismail University

2. Sultan Moulay Slimane University, FST-BM

Abstract

This article explores the corrosion aspects of L316 stainless steel in an environment composed of phosphoric acid extracted from natural phosphates from Morocco, in the presence of sulfate ions. L316 stainless steel is widely used in various industries, but its behavior in the presence of phosphoric acid and sulfate ions has attracted growing interest. The study was carried out using experimental techniques such as electrochemical tests like cyclic voltametry (VC), impedance spectroscopy (EIS) and Taffel curves (VL), surface analysis, and weight loss measurements. The results indicate that the presence of sulfate ions has a significant impact on the corrosion rate of L316 steel in the extracted phosphoric acid medium. Specific corrosion mechanisms were proposed and discussed on the basis of the experimental observations.

Publisher

Research Square Platform LLC

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