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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Although, as reported Threrujirapapong et al. Kinetic and mechanistic investigations: Recent overview and trends.
Revista Colombiana de Química
TiO2 optimization tests for RB5 decolorization. Since the kinetics were evaluated only by the RB5 concentration, it is necessary to take into account that the evaluation of other involved species may be necessary, if the overall kinetic parameters are required According to the optimization tests, under the conditions of the 21 st test fotocatalisiw.
Contamination of water sources with dyes interferes with the photosynthetic processes of aquatic organisms and impacting the health of the population that receive contaminated water 4. Using a numerical method implemented in Statgraphics, a maximum expected AUC of Additionally, it provides the possibility of using solar radiation as a primary source of energy.
Fotocatálisis heterogénea para el abatimiento de tensoactivos aniónicos en aguas residuales
Dual effect of photocatalysis and adsorption in degradation of azorubine dye using Nanosized TiO2 and activated carbon immobilized with different techniques.
Titanium dioxide TiO 2 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 hetwrogenea kinetics process 19 This behavior agrees with what has been reported by other authors who claim that the degradation of azo dyes increases with decreasing pH 13 Where A 0 corresponds to the initial absorbance and A t to the absorbance after the photocatalytic reaction.
fotoccatalisis According to the experimental design Table 1, Figure 1mL beakers were used, with mL of the dye solution and TiO 2. Synthetic dyes are aromatic compounds with structural diversity, high chemical stability, and resistance to microbial attack.
The reaction was carried out in an aluminum photoreactor equipped with five lamps. The RB5 photocatalytic decolorization was performed in an aluminum photoreactor R.
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. Thus, photocatalytic degradation of RB5 is faster in low initial dye concentration, reaching a maximum in acidic conditions at 10 h. Furthermore, it was observed that the degradation of 50 mg L -1 of RB5 using 0.
In contrast, in the present work, under the conditions of the 16th test 0. Adsorption of methylene blue on low-cost adsorbents: It is concluded that the photocatalytic process presented in this work do not generate cytotoxic by-products. Decontamination and disinfection of water by solar photocatalysis: However, to fotocqtalisis the influence of the TiO 2 concentration on the dye decolorization, two concentration values of TiO 2 were applied: The RB5 decolorization was followed spectrophotometrically Shimadzu UV spectrophotometer at nm.
The growth of the cells submitted to the different treatments was similar to that of the untreated control cells, i.
In this study, photocatalytic degradation is favored at pH 3. Thus, it may be preferable to use low amounts of it to reduce operating costs. Introduction Preserving and protecting natural resources, such as water, is one of the nowadays main environmental concerns.
Another possible cause for such results is the UV-screening effect of the dye itself. Therefore, advanced oxidation processes AOPs have emerged as an alternative for the treatment of waters polluted with synthetic dyes and other substances.
Effect of Fenton treatment on aerobic, anoxic and anaerobic processes.
Enhanced decolorization of reactive black 5 dye by active carbon sorbent-immobilized-cationic surfactant AC-CS. However, these characteristics make it a toxic compound, recalcitrant to natural aquifers 6.