Citas bibligráficas
Salazar, V., (2023). Determinación de la remoción de cromo (III) de efluentes de curtiembre por medio de intercambio iónico utilizando zeolitas naturales [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/26956
Salazar, V., Determinación de la remoción de cromo (III) de efluentes de curtiembre por medio de intercambio iónico utilizando zeolitas naturales [Tesis]. PE: Universidad Nacional de Ingeniería; 2023. http://hdl.handle.net/20.500.14076/26956
@misc{renati/712833,
title = "Determinación de la remoción de cromo (III) de efluentes de curtiembre por medio de intercambio iónico utilizando zeolitas naturales",
author = "Salazar Leiva, Víctor Eduardo",
publisher = "Universidad Nacional de Ingeniería",
year = "2023"
}
The present research work evaluates the experimental conditions at which the máximum percentage of chromium (III) removal of effluents from the leather tanning industry occurs, whose high Cr3 loads, represent a latent problem in the Peruvian industry. While it is true that the State has enacted environmental protection laws related to the regulation of discharges of effluents from the tannery industry, they are not yet effectively implemented or binding. The use of Neonite MR brand zeolites are produced as a blend of zeolites and other natural microporous rocky materials. This material is of low environmental load, because it can be recycled and is used mainly in the treatment of effluents with high load of suspended solids and high concentrations of heavy toxic metals, such as Cr 3+, Pb 2+, Cd3+, Hg 2 . The present research work evaluates the use of a natural chemical, which does not require preliminary treatments, such as neutralization, to be used in the treatment of effluents based on their flocculant and adsorption capacity. Considering its high potential as a technically sustainable and environmentally friendly material, this research has characterized the physicochemical conditions to develop innovative proposals in order to optimize the removal of chromium (III) from effluents with high loads of this toxic metal. The level of research is explanatory-causal, with a factorial experimental design 32x2 where the efficiency of chromium (III) removal of effluents from the tannery industry was evaluated. In relation to the tanning effluent, aliquots of 250 mL of the tanned effluent were taken with an initial concentration of chromium (III) of 2243.73 ppm, obtaining removal efficiencies of 97.05 % at pH = 7, zeolite concentration of 32 g / L, stirring speed of 300 ppm and agitation time of 60 minutes. On the other hand, the efficiency of chromium (III) removal from the composite effluent was evaluated. Aliquots of 250 mL compound effluent were taken with an initial chromium (III) concentration of 541.3640 ppm, obtaining removal efficiencies of 99.89%, zeolite concentration of 5 g / L, agitation speed of 300 ppm and stirring time of 5 minutes. While it is true that, in times of 10 and 15 minutes of agitation, the percentage of removal is slightly higher but not significantly higher.
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