Evaluation of hematin-catalyzed Orange II degradation as a potential alternative to horseradish peroxidase
The catalytic performance of hematin was evaluated for the decolorization of solutions of the monoazoic textile dye Orange II in comparison to horseradish peroxidase (HRP) by means of response surface methodology. Conversions were affected mostly by the pH of the medium, followed by the catalyst and...
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2012
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| 100 | 1 | |a Córdoba, A. | |
| 245 | 1 | 0 | |a Evaluation of hematin-catalyzed Orange II degradation as a potential alternative to horseradish peroxidase |
| 260 | |c 2012 | ||
| 270 | 1 | 0 | |m Córdoba, A.; Investigacion y Desarrollo en Tecnologia Quimica (IDTQ), Grupo Vinculado PLAPIQUI - CONICET, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Av. Velez Sarsfield 1611, X5016GCA Ciudad Universitaria, Córdoba, Provincia de Córdoba, Argentina; email: agostinacordoba@gmail.com |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a The catalytic performance of hematin was evaluated for the decolorization of solutions of the monoazoic textile dye Orange II in comparison to horseradish peroxidase (HRP) by means of response surface methodology. Conversions were affected mostly by the pH of the medium, followed by the catalyst and peroxide concentrations, whereas temperature impact was negligible. Both catalysts removed more than 92% of the color from 75 mg l-1 solutions after 60 min. Catalytic performance was optimal at alkaline pH and low peroxide-to-dye molar ratio (2.5 for HRP and 5 for hematin). Conversion results suggest a catalatic route for activity recovery and a lower sensitivity of hematin to peroxide and organic radical attack. Chemical oxygen demand values revealed lack of mineralization after treatment. UV/visible and FTIR spectra of treated solutions confirmed azo bond cleavage and the presence of oxygenated aliphatic hydrocarbon moieties as main products with both catalysts, whereas in the case of HRP coupling products are also produced after 24 h. These results are presented for the first time for hematin as biomimetic of peroxidase for dye degradation with a systematic study of variables using the Doehlert array. As a result, hematin emerges as an effective alternative to HRP for azo-dyes removal. © 2012 Elsevier Ltd. |l eng | |
| 593 | |a Investigacion y Desarrollo en Tecnologia Quimica (IDTQ), Grupo Vinculado PLAPIQUI - CONICET, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Av. Velez Sarsfield 1611, X5016GCA Ciudad Universitaria, Córdoba, Provincia de Córdoba, Argentina | ||
| 593 | |a Planta Piloto de Ingeniería Química (PLAPIQUI), PLAPIQUI-UNS-CONICET, Universidad Nacional del Sur, Camino La Carrindanga Km 7, CC 717, 8000 Bahía Blanca, Provincia de Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a AZO DYE |
| 690 | 1 | 0 | |a DECOLORIZATION |
| 690 | 1 | 0 | |a HEMATIN |
| 690 | 1 | 0 | |a HORSERADISH PEROXIDASE |
| 690 | 1 | 0 | |a RESPONSE SURFACE METHODOLOGY |
| 690 | 1 | 0 | |a ACTIVITY RECOVERY |
| 690 | 1 | 0 | |a AFTER-TREATMENT |
| 690 | 1 | 0 | |a ALIPHATIC HYDROCARBONS |
| 690 | 1 | 0 | |a ALKALINE PH |
| 690 | 1 | 0 | |a AZO BOND CLEAVAGE |
| 690 | 1 | 0 | |a CATALYTIC PERFORMANCE |
| 690 | 1 | 0 | |a COUPLING PRODUCT |
| 690 | 1 | 0 | |a DECOLORIZATION |
| 690 | 1 | 0 | |a DOEHLERT |
| 690 | 1 | 0 | |a DYE DEGRADATION |
| 690 | 1 | 0 | |a FT-IR SPECTRUM |
| 690 | 1 | 0 | |a HEMATIN |
| 690 | 1 | 0 | |a HORSE-RADISH PEROXIDASE |
| 690 | 1 | 0 | |a MOLAR RATIO |
| 690 | 1 | 0 | |a ORANGE II |
| 690 | 1 | 0 | |a ORGANIC RADICALS |
| 690 | 1 | 0 | |a PEROXIDE CONCENTRATION |
| 690 | 1 | 0 | |a RESPONSE SURFACE METHODOLOGY |
| 690 | 1 | 0 | |a SYSTEMATIC STUDY |
| 690 | 1 | 0 | |a TEMPERATURE IMPACT |
| 690 | 1 | 0 | |a TEXTILE DYES |
| 690 | 1 | 0 | |a ALKALINITY |
| 690 | 1 | 0 | |a AZO DYES |
| 690 | 1 | 0 | |a BIOMIMETICS |
| 690 | 1 | 0 | |a CATALYSTS |
| 690 | 1 | 0 | |a CHEMICAL OXYGEN DEMAND |
| 690 | 1 | 0 | |a DEGRADATION |
| 690 | 1 | 0 | |a FOURIER TRANSFORM INFRARED SPECTROSCOPY |
| 690 | 1 | 0 | |a HYDROCARBONS |
| 690 | 1 | 0 | |a OXIDATION |
| 690 | 1 | 0 | |a PHOTODEGRADATION |
| 690 | 1 | 0 | |a STRIPPING (DYES) |
| 690 | 1 | 0 | |a SURFACE PROPERTIES |
| 690 | 1 | 0 | |a TEXTILE FINISHING |
| 690 | 1 | 0 | |a CATALYSIS |
| 690 | 1 | 0 | |a CATALYST |
| 690 | 1 | 0 | |a CHEMICAL OXYGEN DEMAND |
| 690 | 1 | 0 | |a DEGRADATION |
| 690 | 1 | 0 | |a DYE |
| 690 | 1 | 0 | |a ENZYME ACTIVITY |
| 690 | 1 | 0 | |a HYDROCARBON |
| 690 | 1 | 0 | |a MINERALIZATION |
| 690 | 1 | 0 | |a POLLUTANT REMOVAL |
| 690 | 1 | 0 | |a RADICAL |
| 690 | 1 | 0 | |a ARMORACIA RUSTICANA |
| 650 | 1 | 7 | |2 spines |a PH |
| 700 | 1 | |a Magario, I. | |
| 700 | 1 | |a Ferreira, M.L. | |
| 773 | 0 | |d 2012 |g v. 73 |h pp. 60-72 |p Int. Biodeterior. Biodegrad. |x 09648305 |w (AR-BaUEN)CENRE-5193 |t International Biodeterioration and Biodegradation | |
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| 856 | 4 | 0 | |u https://doi.org/10.1016/j.ibiod.2012.05.020 |y DOI |
| 856 | 4 | 0 | |u https://hdl.handle.net/20.500.12110/paper_09648305_v73_n_p60_Cordoba |y Handle |
| 856 | 4 | 0 | |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09648305_v73_n_p60_Cordoba |y Registro en la Biblioteca Digital |
| 961 | |a paper_09648305_v73_n_p60_Cordoba |b paper |c PE | ||
| 962 | |a info:eu-repo/semantics/article |a info:ar-repo/semantics/artículo |b info:eu-repo/semantics/publishedVersion | ||
| 999 | |c 70314 | ||