Jul 13, 2014, 6:13 PM
News Code: 2721158
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Removal of Congo red dye from wastewater

Tehran, July 13, IRNA -- Researchers at Shahid Chamran University of Ahvaz in southwest Iran, in association with their counterparts at Linkoping University in Sweden, removed Congo red dye from industrial wastewater.

Monday edition of the English language newspaper Iran Daily wrote that the textile dyeing industry consumes large quantities of water and produces large volumes of wastewater from different processes in dyeing. Congo red dye is toxic to many organisms.

In the study, Congo red organic dye was degraded by different morphologies of copper oxide (CuO).

Results of the study indicated that CuO nanorods are more favorable for the degradation of Congo red.

All the CuO nanostructures were prepared by low temperature aqueous growth method.

Scanning electron microscopy, high resolution transmission electron microscopy and X-ray diffraction techniques were used for the morphological and structural characterization of CuO nanostructures.

The relative degradation of Congo red for nanorods, nanoleaves and nanosheets was 67 percent, 48 percent and 12 percent, respectively.

The dye, Congo red is the salt of benzidinediazo-bis-1-naphthylamine-4-sulfonic acid with a molecular mass of 696.66 g/mol.