Removal and Recovery of Chromium from Solutions Simulating Tannery Wastewater by Strong Acid Cation Exchanger

Figure 5

(a) The exhaustion breakthrough curve (first cycle). Initial chromium(III) concentration: 117 mg/L; pH: 2.98 (installation II). (b) The regeneration curve (first cycle). Regenerant solution: 0.3 M H₂O₂; 0.2 M NaOH (installation II).

(a)

(b)