Access

doi:10.1038/nindia.2009.326; Published online 4 November 2009

Research highlight

Combo recipe to remove toxic dye

Researchers have used bottom ash and deoiled soya, two waste materials to remove Congo red, a toxic dye and possible carcinogen from waste water1.

Besides being an irritant, Congo red may cause paternal effects or fetal abnormalities and is harmful if swallowed, inhaled or absorbed through skin.