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Effective Adsorptive Removal of SDBS from Aqueous phase Employing Biochar Incorporated Alginate Beads

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Author Affiliations

  • 1Department of Chemistry, Shri Shankaracharya Professional University, Bhilai, 491001, India
  • 2Department of Chemistry, Shri Shankaracharya Professional University, Bhilai, 491001, India
  • 3Department of Applied Chemistry, Bhilai Institute of Technology, Durg, 491001, India

Res.J.chem.sci., Volume 16, Issue (3), Pages 23-32, October,18 (2026)

Abstract

This study examines the elimination of sodium dodecylbenzenesulfonate (SDBS), an anionic surfactant, from water with a new composite adsorbent prepared from biochar produced from banana peels and calcium alginate (BPBCA) beads. Batch adsorption investigations demonstrated optimal removal (95.55%) at pH 7, utilizing a 0.06g adsorbent dosage, an initial SDBS concentration of 50mg/L, and a stirring duration of 60 minutes, resulting in qe of 39.85mg/g. The process obeyed pseudo-second-order model and the Langmuir isotherm, exhibiting a qmax of 46.51mg/g. Thermodynamic analysis demonstrated spontaneous adsorption, validated by negative changes in Gibbs free energy. The environmentally sustainable composite can effectively remove SDBS from water.

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