manganese adsorption tests and 500mL for uranium tests. The pH range adopted was from 2.7 to 7.0 for manganese and 2.7 and 3.9 for uranium; the pH was adjusted with lime when necessary. The suspension was shaken at 150rpm for 24 hours, at room temperature (25°C). After that, it was filtered, and the solution assayed for uranium and manganese.
