Removal of Copper(II) in the Presence of Sodium Dodecylobenzene Sulfonate from Acidic Effluents Using Adsorption on Ion Exchangers and Micellar-Enhanced Ultrafiltration Methods

Molecules. 2022 Apr 9;27(8):2430. doi: 10.3390/molecules27082430.

Abstract

The selective removal of Cu(II) in the presence of sodium dodecylobenzene sulfonate from acidic effluents was made using the adsorption and micellar-enhanced ultrafiltration methods. Lewatit MonoPlus TP220 showed the best adsorption behavior in the systems containing Cu(II) in the presence of ABSNa50 surfactant compared to the other adsorbents (removal efficiency ≈ 100%, sorption capacity ≈ 10 mg/g). The kinetics followed the pseudo-second order kinetic equation. The Langmuir adsorption capacities were 110 mg/g (the system with ABSNa50 above CMC) and 130.38 mg/g (the system with ABSNa50 below CMC). The working ion exchange capacities were Cw = 0.0216 g/mL and Cw = 0.0135 g/mL. The copper removal by the micellar-enhanced ultrafiltration method was 76.46% (0.1 mol/L HCl).

Keywords: adsorption; copper; micellar-enhanced ultrafiltration; removal; sodium dodecylobenzene sulfonate.

MeSH terms

  • Acids
  • Adsorption
  • Alkanesulfonates
  • Copper*
  • Hydrogen-Ion Concentration
  • Ions
  • Kinetics
  • Micelles
  • Sodium
  • Ultrafiltration
  • Water Pollutants, Chemical* / analysis

Substances

  • Acids
  • Alkanesulfonates
  • Ions
  • Micelles
  • Water Pollutants, Chemical
  • Copper
  • Sodium