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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Biological evaluation of the HepG2 cell line.

Fotocatálisis heterogénea para el abatimiento de tensoactivos aniónicos en aguas residuales

Finally, the absorbance at nm was determined and the minimum fotocatalisls concentration LC 50 was found. Although, as reported Threrujirapapong et al. Decontamination of wastewaters containing synthetic organic dyes by electrochemical methods: This presents a contribution to the ongoing discussions on dye decolorization.

However, these characteristics make it a toxic compound, recalcitrant to natural aquifers 6.

Degradation of a persistent organic dye from colored textile wastewater by ozonation. Optimization of RB5 photocatalytic decolorization Because the concentration of TiO 2 is a parameter that significantly affects the decolorization rate of the dye, it is essential to optimize it. How to cite this article.

However, high substrate concentrations decrease the photonic efficiency and saturate the TiO 2 surface, which leads to catalyst deactivation and a decrease of the degradation efficiency 15 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.

At low pH, reduction by electrons in CB may play an important role in the degradation of dyes due to the reductive cleavage of azo bonds Simultaneous decolorization and detoxification of black reactive 5 using TiO2 deposited over borosilicate glass. 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 In photocatalytic processes, others semiconductors such as zinc oxide ZnOstannic oxide SnO 2zinc sulfide ZnSand cadmium sulfide CdS can be used as catalyst for the degradation of contaminants Large quantities of drinking water L kg -1 of textile material are consumed in the textile industry, due to inefficiencies in the dyeing process.

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The objective of our research was not to identify the byproducts of the reaction, but the evaluation of its cytotoxicity; this parameter indicates the degree of toxicity of the by-products. Conventional water treatments with surfactants are made by a biological action during the primary sedimentation. The evaluated samples did not show toxicity in the HepG2 cell line.

The biological evaluation is presented in Figure 7. This character of sustainability gives significant environmental value 4.

The effect of TiO 2 0. Biotechnology applied to the degradation of textile industry dyes.

Additionally, other authors have reported that the degradation of azoic dyes and other substances by heterogeneous photocatalysis, using TiO 2 and UV, light can be followed by a first-order kinetics process 19 Doxorubicin was fotocataalisis as positive cytotoxicity control, as it is a cytotoxic agent intercalating the DNA; untreated cells were used as negative cytotoxicity control Results obtained after applying the Box—Behnken experimental design Table 1.

Besides, the cytotoxicity analysis has not carried out in most of the studies on this topic, but this type of analysis is important to determine the environmental impact of the treated water.

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Heterogeneous photocatalytic methodologies are based on the band model. RB5 decolorization after 10 h, under the conditions of assays 16 to LC50 values in HepG2 cells, obtained for RB5 photocatalytic decolorization mixtures tests 10 and 20compared to doxorubicin positive control. Because the concentration of TiO 2 is a parameter that significantly affects the decolorization rate of the dye, it is essential to optimize it.

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 Complete decolorization of Heterlgenea was obtained at 14 h, employing 0.

It is concluded that the photocatalytic process presented in this work do not generate cytotoxic by-products. RB5 decolorization in aqueous solution The RB5 decolorization was followed spectrophotometrically Shimadzu UV spectrophotometer at nm.

Revista Colombiana de Química

The reaction was carried out in an aluminum photoreactor equipped with five lamps. Kinetic and mechanistic investigations: Advanced oxidation of acid and reactive dyes: Thus, these industries produce large amounts of wastewater with high concentrations of synthetic dyes 2. Cytotoxicity analysis The MTT reduction method was employed to establish the cytotoxicity of the reaction mixtures corresponding to the tests with the highest percentage of RB5 decolorization, utilizing the HepG2 cell line Methods of in vitro toxicology.