Adsorption of Mckel(Ii) and Chromium(Vi) from Synthetic Metal Solutions Using Powdered Human Hair as Adsorbent
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Date
2010
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Abstract
Adsorption is one of tlie elTective techniques f6r the removal of nickel(II) and chromium
(VI) from waste water. In this study, adsorbent is prepared from human hair and studies were
carried out for the removal o f nickel (II) and chromium (VI) from synthetic metal solutions. Batch
adsorption stud ies demonstrate that the adsorbent prepared from human hair has a significant capacity
for adsorption of nickel (II) and chromium (VI) fi'om synthetic metal solution and for the removal of
nickel (II) and chromium (VI) from synthetic binary metal solution. The parameters investigated in
this study include pH, temperature, adsorbent dosage, initial concentration and contact time. The
adsorption process of nickel (II) and chromium (VI) are tested with Langmuir and Freundlich isothemi
models. The maximum adsor|rtion capacity of nickel (II) was found to be pH 6 (52.2 %) and chromium
(VI) was at pH 4 (74 %) in room temperature from synthetic metal solution. The maximum removal
of nickel (11) (48.2 %) and chromium (VI) (54.9 %) were found to be at pH 4 in room temperature
from synthetic binary metal solution.