Purification of Sulphate Leach Liquor of Spent Raneynickel Catalyst Containing Al and Ni by Solvent Extraction with Organophosphorus-Based Extractants

Figure 2

McCabe-Thiele plot for Al extraction. Conditions: Al = 3.25 g/L; Ni = 85 g/L; equilibrium pH, 2.23; A/O, 1/1–3 and O/A, 1/1–5.