Efecto y tolerancia de semillas de Helianthus Annuus (Asteraceae), Mentha Pepirita (Lamiaceae) y Medicago Sativa (Fabaceae) a diferentes concentraciones de Cadmio
Cadmium is a heavy metal, which by their nature have a high threat to not be chemically or biologically degradable, why is one of the causes of environmental degradation, and causes direct damage in man. In Ecuador this metal is as a result of industrial activities present in the effluents and so...
| Autor Principal: | Panchi Campues, Fabiola Elizabeth |
|---|---|
| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado: |
2015
|
| Materias: | |
| Acceso en línea: |
http://dspace.ups.edu.ec/handle/123456789/10094 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: |
Cadmium is a heavy metal, which by their nature have a high threat to not be
chemically or biologically degradable, why is one of the causes of environmental
degradation, and causes direct damage in man. In Ecuador this metal is as a result of
industrial activities present in the effluents and soil, causing an environmental impact
due to their involvement to be directly related to water sources. At present there are
proposed various types of wastewater treatment for removal of heavy metals, in this
study a biological treatment is proposed as fitorremendiación to remove the cadmium
in the water. Was performed in the laboratory an experiment where I was exposed to
the seeds of sunflower (Helianthus annuus), Peppermint (Mentha piperita) and Alfalfa
(Medicago sativa), at different concentrations of cadmium in a hydroponic medium,
for a period of 45 days, where changes occurring in the physiological level and
reducing species cadmium present in a water sample was analyzed, pH variations that
interaction between the metal and the seedling produced. From the analyzes was
obtained that kind of alfalfa was able to absorb as much of cadmium in the water,
reducing its concentration of 10 ppm to 6,4 ppm after 30 days of exposure. |
|---|