Estudio de la biodegradación de bolsas oxo - biodegradables en agua dulce y salada, simulando condiciones ambientales de Costa, Sierra y Oriente Ecuatoriano.
This work allowed the study of the biodegradation of four types of oxobiodegradable bags using simulated environmental conditions in freshwater and seawater from the coastal, sierra and oriente Ecuadorian regions. As the first part of the study an investigation of existing retail chains in the re...
| Autor Principal: | Escobar Silva, Nelly Jacqueline |
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| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: |
http://dspace.ups.edu.ec/handle/123456789/7142 |
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| Sumario: |
This work allowed the study of the biodegradation of four types of oxobiodegradable
bags using simulated environmental conditions in freshwater and
seawater from the coastal, sierra and oriente Ecuadorian regions.
As the first part of the study an investigation of existing retail chains in the regions
was performed to select the samples then more used to sell products, then proceeded
to the design and construction of a suitable bioreactor for experimentation. Selected
samples were subjected to weathering by UV radiation given for two months, then
were placed in the bioreactor under simulated ambient temperature in both fresh and
salt water for three months. The evolution of degradation was determined by
quantification methodologies weight, thickness, infrared spectroscopy, differential
scanning calorimetry tests and mechanical tensile tests. To control the environment
where measurements were samples in water parameters, pH, dissolved oxygen and
electrical conductivity were performed.
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Tests conducted in weight and thickness samples showed different variations with
increases and decreases along experimentation via infrared spectroscopy test the
presence of different functional groups which initially showed a degradation process
identified.
In the thickness testing the behavior of the samples had a significant decrease in the
elongation and a stable behavior in the enthalpy by differential scanning calorimetry. |
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