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Abstract
All the toxic dyes that are released into the water bodies should be treated before releasing them as it has various harmful effects on humans as well as the aquatic life. In the present study absorbent used is easily available waste corn cob, that has been used to remove dyes from water. The corncob used was treated with NaOH and its adsorption of dye (malachite green) was tested at different pH range (2-9) and same was done with untreated corncob, the dyes used were malachite green, Congo red. The dyes used in the study are azo dyes.