“Influencia del tiempo de contacto y porcentaje de fibras sansevieria trifasciata sobre el porcentaje de remoción de cromo(vi) de aguas residuales”
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Date
2024-09
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Publisher
Universidad Nacional de Trujillo
Abstract
El propósito fundamental de la presente investigación fue de analizar de qué manera la
variación en el porcentaje de fibras de Sansevieria trifasciata y el tiempo de contacto
incide en la eficiencia de remoción de cromo (VI) en soluciones efluentes simuladas de
aguas residuales. La metodología comprendió aspectos físico-químicos, utilizando
técnicas como espectroscopía infrarroja por transformada de Fourier (FTIR) y
microscopia óptica para caracterizar las fibras, como también mediciones de la
concentración de cromo (VI) mediante el método espectrofotométrico UV-visible. El
diseño experimental, de enfoque explicativo y cuantitativo, contempla diferentes
porcentajes de fibras (1%, 5%, 10%) y tiempos de contacto (30, 60 y 90 minutos). Como
resultado, se observaron variaciones significativas en la eficiencia de remoción de cromo
(VI) en función del porcentaje de fibras y el tiempo de contacto. Se determinó que los
mayores porcentajes de fibras demostraron una capacidad de adsorción más pronunciada,
sugiriekmndo una relación directa con la mayor disponibilidad de sitios activos en la
biomasa. Asimismo, se evidenció que el tiempo de contacto influyó en la cinética de
adsorción, permitiendo una mejora continua en la remoción de cromo (VI) al incrementar
la duración del ensayo. Obteniendo un porcentaje máximo de remoción de 98.65% a
través del tiempo de contacto óptimo de 90 minutos y del porcentaje de fibras Sansevieria
trifasciata óptimo de 10%. En conclusión, esta investigación resalta la influencia
conjunta del porcentaje de fibras y el tiempo de contacto en la eficiencia de remoción de
cromo (VI), proporcionando valiosa información para el diseño eficiente de sistemas de
adsorción en el tratamiento de aguas residuales contaminadas con este metal pesado.
The principal aim of this present research was to analyze how the variation in the percentage of Sansevieria trifasciata fibers and the contact time affects the removal efficiency of chromium (VI) in simulated wastewater effluent solutions. The methodology included physical-chemical aspects, using techniques such as Fourier transform infrared spectroscopy (FTIR) and optical microscopy to characterize the fibers, as well as measurements of chromium (VI) concentration using the UV-visible spectrophotometric method. The experimental design, with an explanatory and quantitative approach, contemplates different percentages of fibers (1%, 5%, 10%) and contact times (30, 60 and 90 minutes). As a result, significant variations in chromium (VI) removal efficiency were observed depending on the percentage of fibers and contact time. It was determined that the higher percentages of fibers demonstrated a more pronounced adsorption capacity, suggesting a direct relationship with the greater availability of active sites in the biomass. Likewise, it was evident that the contact time influenced the adsorption kinetics, allowing a continuous improvement in the removal of chromium (VI) by increasing the duration of the test. Obtaining a maximum removal percentage of 98.65% through the optimal contact time of 90 minutes and the optimal percentage of Sansevieria trifasciata fibers of 10%. In conclusion, this research highlights the joint influence of the percentage of fibers and contact time on the removal efficiency of chromium (VI), providing valuable information for the efficient design of adsorption systems in the treatment of wastewater contaminated with this metal. heavy.
The principal aim of this present research was to analyze how the variation in the percentage of Sansevieria trifasciata fibers and the contact time affects the removal efficiency of chromium (VI) in simulated wastewater effluent solutions. The methodology included physical-chemical aspects, using techniques such as Fourier transform infrared spectroscopy (FTIR) and optical microscopy to characterize the fibers, as well as measurements of chromium (VI) concentration using the UV-visible spectrophotometric method. The experimental design, with an explanatory and quantitative approach, contemplates different percentages of fibers (1%, 5%, 10%) and contact times (30, 60 and 90 minutes). As a result, significant variations in chromium (VI) removal efficiency were observed depending on the percentage of fibers and contact time. It was determined that the higher percentages of fibers demonstrated a more pronounced adsorption capacity, suggesting a direct relationship with the greater availability of active sites in the biomass. Likewise, it was evident that the contact time influenced the adsorption kinetics, allowing a continuous improvement in the removal of chromium (VI) by increasing the duration of the test. Obtaining a maximum removal percentage of 98.65% through the optimal contact time of 90 minutes and the optimal percentage of Sansevieria trifasciata fibers of 10%. In conclusion, this research highlights the joint influence of the percentage of fibers and contact time on the removal efficiency of chromium (VI), providing valuable information for the efficient design of adsorption systems in the treatment of wastewater contaminated with this metal. heavy.
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TECHNOLOGY::Chemical engineering::Metallurgical process and manufacturing engineering::Metallurgical process engineering