8 research outputs found
Biosorption of Cr (III) from aqueous solutions using indigenous biomaterials
In the present study, an indigenous medicinal plant, Tridax procumbens
(Asteraceae) was used as bioadsorbent for the removal of Cr (III) ions
from synthetic wastewater and the method was also applied for real
sample analysis. The biosorption of Cr (III) was a two-stage batch
reactor process. In the first stage, raw biomaterial was used to the
conversion of Cr (VI) into Cr (III). The amount of the biomaterial was
2.5g. The percent conversion was 100. The second stage involved the
biosorption of Cr (III) onto the activated carbon of the biomaterial.
The result indicated that, the biosorption of Cr (III) was 98.5 % at
the optimum pH of 3.2. The experiments were carried out at the
temperature of 25 ± 20C. The optimum contact time was 150 min and
the adsorbent dose was 2.5g of activated carbon. The effect of
concentration was also studied for the design of the treatment systems
and this methodology is highly suitable for the treatment of chromium
containing wastewater