Simultaneous Removal of Dyes Colour and Cu(II) Metal Ions using Acetone-Formaldehyde-Salicyclic Acid Resin

Vihar Patel1, Akshit A. Patel1, Bharat Dixit2 and Ritu Dixit1,*,

1Department of Pharmaceutical Chemistry, Ashok & Rita Patel Institute of Integrated Study & Research in Biotechnology and Allied Sciences, (Affiliated to Sardar Patel University), New Vallabh Vidyanagar-388120, India

2Department of Chemistry, V. P. & R. P. T. P. Science College (Affiliated to Sardar Patel University), Vallabh Vidyanagar-388120, India

*Corresponding author: Fax: +91 2692 229189; Tel: +91 2692 231894; E-mail:


Removal of dyes colour and Cu(II) metal ion from aqueous solution using acetone-formaldehyde-salicyclic acid (AFSA) resin has been carried out. The results revealed that AFSA resin acts as a cheap substitute to commercial adsorbent like activated carbons. The effects of pH, adsorbent dose, contact time, and initial dye and Cu(II) metal ion concentration on the adsorption efficiencies were investigated. Isotherm studies were conducted using Langmuir and Freundlich models, and thermodynamic studies were also performed. Adsorption of dyes was found to obey the Langmuir isotherm model and have endothermic process. The maximum adsorption capacities calculated from the Langmuir isotherm were found to be 88.18 and 2.9 mg/g for methyl orange dyes.


Methyl orange dye, Adsorbent, Acetone-formaldehyde-salicyclic acid resin.

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