Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2007.1048.1052JayabalakrishnanR.M. SelvaseelanD. Augustine 7200777Raw 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.]]>Bailey, S.E., T.J. Olin, R.M. Bricka and D.D. Adrian,19993324692479El-Geundi, R.K.,199827193193Park, S. and W. Jung,200121515Sasi Kala Rani, M.,20032003Singh, I.B. and D.R. Singh,2002238595Sumathi, K.M.S.,19991999Sumathi, K.M.S.,20032003