Trivalent Mn and Fe Complexes for the Degradation of Remazol Dyes


Water contamination by Remazol® dyes can be remediated with the use of bleaching metal complexes. In this study, a series of Mn(III) complexes and ferric nitrilotriacetate were found to be useful in the degrada-tion of Remazol Blue, Remazol Turquoise and Remazol Brilliant Blue. The effect of peroxide, pH, time and irradiation on the bleaching of the dyes was studied. Mn(III)-salen complexes were effective in the degrada-tion of the diazo Remazol Blue dye in the presence of a 2-fold excess of hydrogen peroxide. This dye was also effectively bleached by a combination of hydrogen peroxide, ferric nitrilotriacetate and light irradiation. This is the first time well-defined, low molecular weight trivalent metal complexes are applied to the degra-dation of Remazol® dyes.

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S. Bastos de Lemos e Silva, A. Arndt and B. Pannia Espósito, "Trivalent Mn and Fe Complexes for the Degradation of Remazol Dyes," Journal of Water Resource and Protection, Vol. 2 No. 3, 2010, pp. 209-213. doi: 10.4236/jwarp.2010.23023.

Conflicts of Interest

The authors declare no conflicts of interest.


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