ADSORPTION OF ANIONIC SURFACTANT BY A LOW-COST ADSORBENT

ABSTRACT

This study was undertaken to evaluate the efficiency of rubber granule, a low-cost adsorbent for the removal of sodium dodecyl sulfate (SDS) that is a representative member of anionic surfactant (AS). In the batch experiments conducted at an initial concentration range of 2–6 mg/l, it was found that the rubber granules selected could remove SDS from water up to 90%. Kinetic profiles were developed for various conditions. Effects of adsorbent size, initial adsorbate concentration and adsorbent dose, pH, Ca²⁺ ion concentration, Fe²⁺ ion concentration, Cl⁻ ion concentration, and ionic strength on the adsorption of SDS on rubber granules were studied. The adsorption isotherm studies were also conducted.

Keywords:

• Anionic surfactant
• Adsorption
• Removal
• Rubber granules

Acknowledgments