Evaluación de la actividad de las saponinas extraidas de Agave americana como agentes precipitantes y coadyuvantes para la remediación de aguas contaminadas con cromo hexavalente y arsénico
As + 3 and Cr + 6 are naturally present in the environment, due to anthropogenic activities, mainly mining, these metals have become pollutants of high environmental risk. For this reason, we have decided to evaluate the activity of saponins extracted from Agave americana as precipitant and adjuvant...
| Autor Principal: | Arcos Pérez, Gabriel Alexander |
|---|---|
| Otros Autores: | Vivar Robles, Alejandra Estafanía |
| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado: |
2015
|
| Materias: | |
| Acceso en línea: |
http://dspace.ups.edu.ec/handle/123456789/9405 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: |
As + 3 and Cr + 6 are naturally present in the environment, due to anthropogenic activities, mainly mining, these metals have become pollutants of high environmental risk. For this reason, we have decided to evaluate the activity of saponins extracted from Agave americana as precipitant and adjuvant for the remediation of contaminated water with Cr + 6 and As+ 3. In this study a method of removal of Cr + 6 and As+ 3 in water models with an initial concentration of 1.25 - 5 ppm and 0.05 - 0.25 ppm respectively developed, using natural surfactant root extracts of Agave Americana rich in saponins. Optimal to remove Cr + 6 conditions were 37, 4 ppm saponin extract, T = 21 ° C, pH = 7.5 and gentle stirring for 10 minutes, while for removing As + 3 the optimal conditions were: 74, 8 of extract saponins, T = 21 ° C, pH = 8.0 and gentle stirring for 10 minutes. The saponins in the extract were identified by HPLC-DAD comparing retention times and the characteristic peaks relative to standard S452. The residual Cr + 6 was determined by atomic absorption spectroscopy, while the As+ 3 residual was determined by Arsenic Test of Lovibond brand. An efficiency of about 16%, the removal of Cr + 6 and 64.41% in the removal of As+ 3, therefore, suggests that the Agave Americana used as an important source of saponins was obtained for removal of As + 3 and Cr + 6 present in wastewater. |
|---|