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Research Paper | Chemistry | India | Volume 13 Issue 1, January 2024

Removal of Metal Ions via Adsorption Technique using Low-Cost Adsorbent

Dattatraya Jirekar ^[2] | Pramila Ghumare ^[2]

Abstract: This study investigates the adsorption capacity of red gram seed husk (RGSH) as a potential bio-adsorbent for removing chromium, copper, and nickel metal ions from aqueous solutions. The adsorption behavior of these metal ions was investigated using batch experiments under varying conditions. The results showed that the adsorption of Cr, Cu, and Ni onto RGSH followed a pseudo-second-order kinetic model, suggesting chemical adsorption as the rate-controlling step. The Langmuir and Freundlich adsorption isotherm models fitted well for Cr and Ni metal ions, indicating surface heterogeneity. The adsorption capacity was pH-dependent, with optimum removal efficiencies observed at slightly acidic to neutral pH ranges. The presence of competing ions had a moderate influence on metal removal. The study concludes that RGSH is a promising and cost-effective bio-adsorbent for heavy metal remediation in wastewater treatment systems. Further investigations into regeneration and reusability are recommended to enhance its practical application potential.

Keywords: Adsorption Capacity, Bio-adsorbent, Kinetic Model, Isotherm Model, Thermodynamic Parameters

Edition: Volume 13 Issue 1, January 2024,

Pages: 707 - 712