FOTOCATALISIS HETEROGENEA PDF

[13] Eliminación de contaminantes por fotocatálisis heterogénea, M.A. Blesa y B. Sánchez (Editores), Editorial CIEMAT, Madrid , ISBN: Get this from a library! Eliminación de contaminantes por fotocatálisis heterogénea. [Miguel A Blesa; CYTED (Organización);]. Get this from a library! Eliminación de contaminantes por fotocatálisis heterogénea. [Miguel Blesa;].

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This behavior agrees with what has been reported by other authors who claim that the degradation of azo dyes increases with decreasing pH 13 After this period, the MTT was added to the culture dishes, and after additional 3 h of incubation at the same temperature, DMSO was added. This result is due to the higher proportions of dye and catalyst that were used in this study, compared to those used by Chong et al.

An exhaustive statistical analysis to obtain suitable operating conditions to carry out the photocatalytic degradation of the dye, on a laboratory scale, was done. Thus, these industries produce large amounts of wastewater with high concentrations of synthetic dyes 2.

Heterogeneous photocatalytic methodologies are based on the band model. Additionally, it provides the possibility of using solar radiation as a primary source of energy. Synthetic fotocatxlisis are aromatic compounds with structural diversity, high chemical stability, and resistance to microbial attack.

Decolorization percentage of RB5 for 14 h. In order to assess the effect of the dye concentration, several of the previous works that have been executed with AOPs report dyes concentrations between 10 mg L -1 and mg L -1 17 The objective of the present work was to develop a photocatalytic methodology with TiO 2for the remediation of aqueous solutions contaminated with RB5 concentrations of 50 mg L-1, 75 mg L-1, and mg L Heterogeneous photocatalysis is an effective process for degrading and mineralizing of pollutants in waste water from several sources.

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Large quantities of drinking water L kg -1 of textile material are consumed in the textile industry, due to inefficiencies in the dyeing process. Sample 3 21st test before photocatalysis, i. Also, there are several studies related to synthetic dyes with cases of toxicity, carcinogenesis, mutagenesis, and teratogenesis in humans 5.

Heterogeneous photocatalytic degradation of organic contaminants over titanium dioxide: Hence, the applied photocatalytic treatment is a viable alternative for the hetefogenea of azo dyes, since it makes it possible to achieve high decolorization percentages of RB5, with no formation of toxic products. For best interpretation, see Table 3. Elimination of Isoxazolyl-Penicillins antibiotics in waters by the ligninolytic native Colombian strain Leptosphaerulina sp.

Simultaneous decolorization and detoxification of black reactive 5 using TiO2 deposited over borosilicate glass.

Fotocatálisis heterogénea para el abatimiento de tensoactivos aniónicos en aguas residuales

TiO 2 particles are likely to aggregate at high concentrations, which reduces the transmission of UV light, and hence the speed of reaction 8. According to the optimization tests, under the conditions of the 21 st test 0. It has been reported that 1 kg of dye is enough to pollute a volume of water of L or higher, that is a concentration of mg L -1 This presents a contribution to the ongoing discussions on dye decolorization.

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From the above, it is possible to conclude that the catalyst load used in the optimization tests is not a determining factor in the improvement of the process productivity Figures 5 and 6.

The chemical nature of synthetic dyes confers them resistance to degradation by conventional methods, including sedimentation, adsorption, oxidation with sodium hypochlorite, filtration, coagulation, flocculation, and biodegradation 7.

First-order kinetics for RB5 decolorization, under the conditions of test 15 0. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. It was determined that the decolorization process could be improved using 0. RB5 decolorization after 10 h, under the conditions of assays 16 to Doxorubicin was used as positive cytotoxicity control, as it is a cytotoxic agent intercalating the DNA; untreated cells were used as negative cytotoxicity control A review of fundamentals, progress and problems.

Revista Colombiana de Química

TiO2 optimization tests for RB5 decolorization. Evaluation of Titanium dioxide photocatalytic technology for the treatment of reactive Black 5 dye in synthetic and real fotofatalisis effluents.

When fitting the model, residuals plot was checked, in searching of potential outliers. The photo-generated electrons and positive holes cause the reduction and oxidation of the organic matter 912 The reaction mixtures evaluated were non-toxic to HepG2 cells, i.