Authors : T D Kose1*, B D Gharde2, A D Gharde3and S B Gholse4
Page Nos : 661-672
Description :
The uncontrolled growth of industrialization in the world is responsible for change in
the chemical and biological properties of both surface and ground water which
constitute a health hazard. The heavy metals render the water unsuitable for drinking
and are also highly toxic to human beings. Removal of these materials is therefore
essential. The studies pertaining to the use of inexpensive agro-based adsorbents,
such as tree bark, saw dust, corncob, straw, and fly ash etc. for heavy metal ion
removal are gaining a lot of importance. In the present study removal of Fe(II) and Mn(II
ions has been investigated using albiziaprocera legume substrate through packed
adsorption column and results obtained are quite encouraging. Batch adsorption
studies have shown that removal of metal ions is dependent upon process parameters
like contact time, temperature, metal ion concentration, doses and pH. The maximum
removal of Fe(II) and Mn(II) to the extent of 82 % has been achieved at pH 4.5 in 30 min
in the concentration range 30 to 90 mg/L. The use of packed adsorption column has
been investigated at the optimized conditions, to study the feasibility of the process for
application in small scale industries. The adsorption data obtained from batch studies
at optimized conditions have been subjected to Freundlich isotherm studies. The data
fits well to the Freundlich isotherm models indicating favorable and monolayer
adsorption. Freundlich constants have been calculated.
