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Removal of chromium (VI) as chromium diphenyl carbazide (CDC) complex from aqueous solution by activated carbon

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Abstract

Adsorption of Cr (VI) as CDC-complex from aqueous solution by activated C has been investigated. Factors like pH and presence of Cr (III) which affect the adsorption of CDC-complex were studied. The increase in particle size and surface area of activated C does not enhance the removal of CDC-complex. For different concentrations of Cr, the optimum quantity of Diphenyl Carbazide has been determined. The reduced Cr e.g. Cr (III) decreases the CDC-complex removal. The Langmuir and Freundlich isotherms constant as calculated are γm=1.8932 and b=0.2305 and n=0.036, log K=0.0266, respectively.

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Authors and Affiliations

  1. National Environmental Engineering Research Institute, 440 020, Nagpur, India

    D. G. Gajghate & A. L. Aggarwal

  2. Indian Institute of Chemical Technology, 500 007, Hyderabad, India

    E. R. Saxena

Authors
  1. D. G. Gajghate
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  2. E. R. Saxena
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  3. A. L. Aggarwal
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Gajghate, D.G., Saxena, E.R. & Aggarwal, A.L. Removal of chromium (VI) as chromium diphenyl carbazide (CDC) complex from aqueous solution by activated carbon. Water Air Soil Pollut 65, 329–337 (1992). https://doi.org/10.1007/BF00479896

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  • DOI: https://doi.org/10.1007/BF00479896

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