COST-EFFECTIVE AND ECO-FRIENDLY TECHNIQUE FOR ATTENUATION OF Cr(VI) FROM AQUEOUS PHASE

COST-EFFECTIVE AND ECO-FRIENDLY TECHNIQUE FOR ATTENUATION OF Cr(VI) FROM AQUEOUS PHASE
Author(s):
Smita G Jagannath, Shankar B.S, Balasubramanya N
Keywords:
Chromium (Cr6+), Contact time, Dosage, pH, Saw dust.
Abstract
The attenuation of chromium (Cr6+) from aqueous solution by adsorption on chemically activated carbon derived from saw dust has been performed at room temperature. The removal by adsorption using Zinc chloride with varying Impregnation ratio’s (I.R) were studied with respect to optimum dosages, and variation of pH and optimum time. It has been seen that the adsorption of Cr6+ increased with an increase in dosage in addition to an increase in Impregnation ratio. Additionally, it was observed that the surface area of saw dust carbon increased with an increase in Impregnation ratio. Thus,it is seen that the maximum removal efficiency is obtained at an I.R ratio of 0.75. Further, the optimum contact time, dosage and pH for carbon with I.R-0.75 was found to be 35min, 150mg and 1.5. The (Cr6+)removal efficiency was observed to be 84%, 90% and 99.80% respectively.
Article Details
Unique Paper ID: 157452 Publication Volume & Issue: Volume 9, Issue 7 Page(s): 265 - 270
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