Sulfate Ion Content

Definition - What does Sulfate Ion Content mean?

Sulfate ion content is the concentration or amount of sulfate ions in a solution.

Studies regarding iron corrosion in sulphuric acid media with a pH near 3.0 have found that the concentration of ions can either accelerate or decelerate the rate of corrosion. Sulfate ions accelerate the corrosion process when the reaction is under cathodic control.

Corrosionpedia explains Sulfate Ion Content

For the electrolytes, sodium sulfate solutions of 0.1M, 0.5M, 1M, 1.5M and 2M concentrations were prepared by dissolving the salt in doubled distilled water. The pH of the solution was adjusted to the desired value (pH = 3, 5, 7, 9, 12 for each sulfate concentration) by adding H2SO4 and NaOH, and the pH value of the solution was measured using a calibrated pH meter. The corrosion tests were carried out at temperatures of 30°C, 35°C, 40°C, 45°C and 50°C (±0.5°C) by putting the corrosion cell in a calibrated thermostat. It was found that the sulfate ions accelerated the corrosion process when the reaction was under cathodic control.

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