(Ethyl-Methyl Sulphide) and its removal was well correlated with removal of overall perceived odor (R2 = 99.0%), (c) the correlation of percentage decrease in the perceived odor concentration with the percentage removal of each of the above three major odor contributing compounds was linear with R2 = 86.67% (Compound1), R2 = 97.53% (Compound 2) and R2 = 99.0% (Compound 3).