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      https://www.ias.ac.in/article/fulltext/jcsc/132/0015

    • Keywords

       

      Eco-friendly; biodegradation; cross-linked; dye removal; natural polysaccharides

    • Abstract

       

      In the present study, the dialdehyde carboxymethyl cellulose (DCMC) was cross-linked covalently to gelatin via the Schiff base reaction to form a three-dimensional hydrogel (DCMC-cl-G). The crosslinking degree of DCMC and gelatin was estimated to be 50.31 ± 2.65. The maximum swelling capacityof the hydrogel in aqueous medium was around 74 g/g at pH 10.0 and 37°C with equilibrium swelling attained in three hours and the compressive strength of the hydrogel was found to be 55 ± 0.76 kPa at 60% strain. The biodegradation studies confirmed 82.67% degradation of the hydrogel sample within a period oftwelve weeks. Further, the hydrogel was evaluated as a bio adsorbent for the removal of hazardous dyes, namely Rhodamine B (RhB) and Methyl Violet (MV) from water due to its decent swelling capacity and good mechanical strength. The maximum percentage of RhB and MV removed from the respective dye solutionsusing DCMC-cl-G hydrogel was 96.5% and 90% at pH 6.0, respectively. Both dyes followed Langmuir adsorption isotherm, which considers monolayer adsorption of adsorbate over adsorbent, with a pseudosecond-order kinetic model.

    • Author Affiliations

       

      SAPNA SETHI1 BALBIR SINGH KAITH2 MANDEEP KAUR1 NEERAJ SHARMA1 SADHIKA KHULLAR2

      1. Department of Chemistry, DAV University, Jalandhar 144 012, Punjab, India
      2. Department of Chemistry, Dr. B.R. Ambedkar National Institute of Technology, Jalandhar 144 011, Punjab, India
    • Dates

       
  • Journal of Chemical Sciences | News

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