Fig. 2

Effect of temperature and agitation speed on the content of iron, sulfur, potassium, and sodium in the filter residues (a–c), and the total iron concentration (d) of the solution after iron removal.
Effect of temperature and agitation speed on the content of iron, sulfur, potassium, and sodium in the filter residues (a–c), and the total iron concentration (d) of the solution after iron removal.