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      https://www.ias.ac.in/article/fulltext/boms/034/07/1675-1681

    • Keywords

       

      Organo-clays; permanganate adsorption; surfactants; breakthrough curve; breakthrough time; column studies.

    • Abstract

       

      Organo-clay was prepared by incorporating different amounts (in terms of CEC, ranging from 134–840 mg of quaternary ammonium cation (QACs) such as hexadecytrimethylammonium bromide ([C19H42N]Br) into the montmorillonite clay. Prepared organo-clays are characterized by CHN analyser and XRD to measure the amount of elemental content and interlayer spacing of surfactant modified clay. The batch experiments of sorption of permanganate from aqueous media by organo-clays was studied at different acidic strengths (pH 1–7). The experimental results show that the rate and amount of adsorption of permanganate was higher at lower pH compared to raw montmorillonite. Laboratory fixed bed experiments were conducted to evaluate the breakthrough time and nature of breakthrough curves. The shape of the breakthrough curves shows that the initial cationic surfactant loadings at 1.0 CEC of the clay is enough to enter the permanganate ions in to the interlamellar region of the surfactant modified smectile clays. These fixed bed studies were also applied to quantify the effect of bed-depth and breakthrough time during the uptake of permanganate. Calculation of thermodynamic parameters shows that the sorption of permanganate is spontaneous and follows the first order kinetics.

    • Author Affiliations

       

      N Mahadevaiah1 B Vijayakumar2 K Hemalatha3 B S Jai Prakash4

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
      2. Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
      3. Department of Chemistry, Vemana Institute of Technology, Bangalore 560 034, India
      4. Bangalore Institute of Technology, Bangalore 560 004, India
    • Dates

       
  • Bulletin of Materials Science | News

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