Chromium (III) removal by weak acid exchanger Amberlite IRC-50 (Na)

Adsorption kinetics, isotherms and thermodynamics of Cr(III) on graphene oxide

“…Although Cr(III) is less toxic than Cr(VI) [5], prolonged contact with high concentrations of Cr(III) can cause allergic skin reactions, cancer and DNA damage [6][7][8]. In addition, it is possible that Cr(III) can also be transformed to highly toxic Cr(VI) under some oxidizing conditions.…”

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

“…Although it is well-known that Cr(VI) is more toxic than Cr(III), the removal of Cr(III) should not be neglected because strong oxidants can change it to harmful Cr(VI) [80]. Ciopec et al [81] found that D2EHPA/XAD-7 resin is an effective adsorbent for Cr(III).…”

Kinetic and Equilibrium Studies of Chromium(III) Removal by Macroporous Ion Exchanger Amberlyst‐15 (H+)

“…(3), when the kinetic data obtained for a series of F values were plotted against t, a straight line was obtained having a slope equal to rate constant as shown in Figure 2. Similarly for particle diffusion equation, the B t values could be calculated by using the equations given below: 16,21,22 2.30258ln(1 ) 0.49770 where B is equal to Dπ 2 /r 2 , D being the particle diffusion coefficient and r its radius. Eq.…”

“…11,12 Recently, microporous strong acid cation exchanger Amberlite IR-120 and macroporous weak acid exchanger Amberlite IRC-50 (Na) are used for the solutions containing Cr 3＋ ions and the results proved that these resins had a strong affinity for these ions. [13][14][15][16] The present study, thus, reports a detailed investigation of Cr(III) removal from aqueous solutions using a macrosporous strong cation exchange resin, Amberlyst-15 (H ＋ ) under different experimental conditions of metal ion concentration (1.923-19.231 mmol/L) and temperature (293-333 K).…”