Shallow Shell resin versus traditional resin: A case study for Cu(II) removal

Abstract

A comparative study on Cu 2+ removal by shallow shell resin (Purolite SST 60) and traditional strongly acidic cation exchange resin (Purolite PFC 100) was performed. Batch experiments were carried out as a function of resin dosage, solution pH and contact time. Ion exchange reaction showed a pH dependent feature. Maximum removal of Cu 2+ achieved pH from 2 to 5. Sorption isothermal data is well interpreted by the Langmuir equation. Additionally, kinetic experiments showed that the pseudo first-order model was suitable for such resins. Thermodynamic parameters such as ∆G°, ∆S° and ∆H° of the ion exchange Cu 2+ on cation exchange resins were also calculated. The regeneration performance of shallow shell technology (SST) resin is better than PFC 100. A solution of 2M H2SO4 performed complete regeneration of SST 60 resin. On the other hand, maximum regeneration reached 80% for PFC 100 resin.