Estudios preliminares para la remoción de Cr3+en columnas rellenas con bagazo modificado químicamente.
Fecha
2005-06-25
Autores
Pérez Pérez, Yahima
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Editor
Universidad Central "Marta Abreu" de las Villas
Resumen
El impacto ambiental causado por el vertimiento de aguas residuales
contaminadas con trazas de iones cromo constituye un problema en nuestro
país.
En el trabajo que se presenta se realizó un estudio de laboratorio de la posible
utilización de un adsorbente de metales pesados (cromo III), obtenido a partir de
bagazo de caña modificado químicamente. Aunque los estudios fueron
realizados con soluciones de laboratorio, el objetivo final es poder contar con
una alternativa viable para la remoción de cromo de residuales de tenerías.
Se exponen los resultados obtenidos a escala de laboratorio con soluciones de
azul de metileno, para un proceso de adsorción de lecho fijo, determinándose la
capacidad de adsorción en columnas. Fue posible establecer las grandes
potencialidades que tiene este adsorbente obtenido a partir de bagazo de caña
de azúcar.
Se realizaron estudios preliminares de adsorción de cromo utilizando bagazo de
caña modificado y sin modificar, en soluciones de sulfato de cromo (III) en
procesos continuos.
Se aplica una metodología para el cálculo del escalado del sistema a escala de
planta piloto, a partir de los resultados obtenidos en el estudio de laboratorio.
La ventaja de este proceso de Biosorción es el desarrollo y aplicación de una
tecnología de remediación con un material de gran abundancia (bagazo) en los
países productores de azúcar a partir de la caña de azúcar y su costo
relativamente más barato que otros existentes tales como los carbones
activados.
The environmental impact caused by the polluted residual waters with appearances of ions chromium constitutes a problem in our country. In the work that is presented it was carried out a study of laboratory of the possible use of an adsorbent of heavy metals (chromium III), obtained from cane bagasse modified chemically. Although the studies were carried out with laboratory solutions, the final objective is to be able to have a viable alternative for the chromium removal of residual of tanneries. The results are exposed obtained to laboratory scale with solutions of blue of metylene, for a process of adsorption of fixed bed, being determined the capacity of adsorption in columns. It was possible the big potentialities that has this new kind of adsorbent. It was carried out preliminary studies of chromium adsorption using modified cane bagasse and without modifying material, in solutions of chromium sulfate (III) in continuous processes. A methodology is applied for the calculation of the scale up of the system to scale of plant pilot, starting from the results obtained in the laboratory study. The advantage of this Biosorption process is the development and application of a treatment technology with a material of great abundance (bagasse) in the producing countries of sugar cane from the cane of sugar and its relatively cheaper cost that other existent ones such as the activated coal.
The environmental impact caused by the polluted residual waters with appearances of ions chromium constitutes a problem in our country. In the work that is presented it was carried out a study of laboratory of the possible use of an adsorbent of heavy metals (chromium III), obtained from cane bagasse modified chemically. Although the studies were carried out with laboratory solutions, the final objective is to be able to have a viable alternative for the chromium removal of residual of tanneries. The results are exposed obtained to laboratory scale with solutions of blue of metylene, for a process of adsorption of fixed bed, being determined the capacity of adsorption in columns. It was possible the big potentialities that has this new kind of adsorbent. It was carried out preliminary studies of chromium adsorption using modified cane bagasse and without modifying material, in solutions of chromium sulfate (III) in continuous processes. A methodology is applied for the calculation of the scale up of the system to scale of plant pilot, starting from the results obtained in the laboratory study. The advantage of this Biosorption process is the development and application of a treatment technology with a material of great abundance (bagasse) in the producing countries of sugar cane from the cane of sugar and its relatively cheaper cost that other existent ones such as the activated coal.
Descripción
Palabras clave
Impacto Ambiental, Aguas Residuales, Metales Pesados, Metals, Heavy, Waste Water, Environmental Impact