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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 7 | Page No.: 1048-1052
DOI: 10.3923/jas.2007.1048.1052
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Efficiency of Mono and Mixed Columns of Vermiculite for Treating Raw Tannery Effluent

R.M. Jayabalakrishnan and D. Augustine Selvaseelan

Raw tannery effluent was leached through mono and mixed columns (different grades) of vermiculite to evaluate their removal efficiency for chromium and other pollutant. It was found that among mono-columns, the chromium removal was the highest in RVG2 (T1) where it was 63.6% at the first pore volume but incase of mixed columns of RVG2 + RVG3 still a higher quantum of chromium removal (74.6%) in the first pore volume was evidenced. In case of removal of cations the vermiculite columns retained most of the cations viz., Ca, Mg, Na and K as evidenced by the substantial decrease in the concentration of these ions in the leachate of the first pore volume. The retention of total chromium, anions and cations by the mono and mixed columns of vermiculite followed a general trend of maximum adsorption during the first pore volume followed by a linear decreasing trend upto third pore volume and in the fourth pore volume the adsorption decreased drastically as a result, the leachate of fourth pore volume was almost equal to that of the original effluent with reference to the pollution load.
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How to cite this article:

R.M. Jayabalakrishnan and D. Augustine Selvaseelan, 2007. Efficiency of Mono and Mixed Columns of Vermiculite for Treating Raw Tannery Effluent. Journal of Applied Sciences, 7: 1048-1052.

DOI: 10.3923/jas.2007.1048.1052






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