TFI-CLS594 is a specialized chelating resin featuring a bis-picolylamine functional group. Due to this specific functionality, the resin possesses exceptionally high affinity for cations such as copper, uranyl, nickel, zinc, cobalt, and others.

TFI-CLS594 exhibits remarkable selectivity for copper and nickel against ferric iron, even at strong acidity levels below pH 2. These properties make it ideal for extracting copper and nickel from pregnant leach solutions (PLS) generated during mineral processing. Additionally, it is widely utilized in plating, etching, and galvanic processes for the recuperation of working solutions.

• Selectivity Order (Sulfate Solution, pH 2):
  Cu >> Ni >> Fe(III) > Cd > Zn > Co >> Fe(II) >>> (Ca, Mg, Al)
• Fractional Elution (Ni/Co Separation):
  After collective sorption of Ni and Co by TFI-CLS594, the metals can be separated sequentially:
  1. Elute Cobalt (Co) using 0.5N H₂SO₄
  2. Elute Nickel (Ni) using ≥1N H₂SO₄
• Strong Copper Binding & Desorption: Complexation with copper is extremely robust, enabling recovery from concentrated sulfuric acid or complexed ligands (e.g., DETA). Copper can be desorbed using an ammonium hydroxide solution to yield a copper ammine complex.