METODO PARA FABRICAR ESCORODITA CRISTALINA DESDE SOLUCION ACUOSA ACIDA QUE COMPRENDE UN PASO DE ADICION DE UN COMPUESTO DE SODIO BASICO A LA SOLUCION ACUOSA ACIDA PARA QUE LA CONCENTRACION DE SODIO EN LA SOLUCION ACUOSA ACIDA SEA MAYOR QUE 0 G/L E IG

摘要

The present invention provides a method for manufacturing scorodite in which scorodite may be obtained at high production efficiency and a high As concentration ratio. The present invention provides a method for manufacturing crystalline scorodite from acidic aqueous solution containing pentavalent As and trivalent Fe, the method comprising a step for adding a basic sodium compound to the acidic aqueous solution such that the sodium concentration in the acidic aqueous solution becomes larger than 0 g/L and equal to or less than 4 g/L.