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Molecules 2016, 21(7), 964;

Immobilized Lignin Peroxidase-Like Metalloporphyrins as Reusable Catalysts in Oxidative Bleaching of Industrial Dyes

Dipartimento di Scienze Biomediche, Università di Cagliari, Complesso Universitario, SP1 Km 0.700, Monserrato (CA) 09042, Italy
Consorzio UNO Oristano, via Carmine snc, Oristano 09170, Italy
Department of Chemistry and QOPNA, University of Aveiro, Aveiro 3810-193, Portugal
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 22 June 2016 / Revised: 17 July 2016 / Accepted: 19 July 2016 / Published: 22 July 2016
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Synthetic and bioinspired metalloporphyrins are a class of redox-active catalysts able to emulate several enzymes such as cytochromes P450, ligninolytic peroxidases, and peroxygenases. Their ability to perform oxidation and degradation of recalcitrant compounds, including aliphatic hydrocarbons, phenolic and non-phenolic aromatic compounds, sulfides, and nitroso-compounds, has been deeply investigated. Such a broad substrate specificity has suggested their use also in the bleaching of textile plant wastewaters. In fact, industrial dyes belong to very different chemical classes, being their effective and inexpensive oxidation an important challenge from both economic and environmental perspective. Accordingly, we review here the most widespread synthetic metalloporphyrins, and the most promising formulations for large-scale applications. In particular, we focus on the most convenient approaches for immobilization to conceive economical affordable processes. Then, the molecular routes of catalysis and the reported substrate specificity on the treatment of the most diffused textile dyes are encompassed, including the use of redox mediators and the comparison with the most common biological and enzymatic alternative, in order to depict an updated picture of a very promising field for large-scale applications. View Full-Text
Keywords: metalloporphyrins; wastewaters; textile dyes; biomimetic; lignin peroxidase; immobilization metalloporphyrins; wastewaters; textile dyes; biomimetic; lignin peroxidase; immobilization

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zucca, P.; Neves, C.M.B.; Simões, M.M.Q.; Neves, M.G.P.M.S.; Cocco, G.; Sanjust, E. Immobilized Lignin Peroxidase-Like Metalloporphyrins as Reusable Catalysts in Oxidative Bleaching of Industrial Dyes. Molecules 2016, 21, 964.

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