La reincidencia del procesado en el derecho penal y la discriminación en razón del pasado judicial
No Thumbnail Available
Date
2024
Journal Title
Journal ISSN
Volume Title
Publisher
PUCE - Ibarra
Abstract
La presente investigación se centra en evaluar la eficacia de los biomateriales fibrosos de coco (Cocos nucífera) y agave (Agave sp.) en la eliminación de cromo total de soluciones acuosas. Los planteamientos centrales del estudio buscan determinar el potencial de estos biomateriales como alternativas ecológicas para la remediación de agua contaminada. El objetivo principal es caracterizar físicamente y químicamente los materiales, elaborar filtros a partir de ellos, y medir su eficiencia en la remoción de cromo total, con un enfoque especial en la comparación de su efectividad según el tamaño de partícula y el tipo de fibra utilizada. El enfoque de la investigación es experimental, con un diseño cuasiexperimental. Se realizaron pruebas físicas y químicas para caracterizar los biomateriales, evaluando el potencial hidrógeno, el porcentaje de humedad, el contenido de cenizas, y el carbono orgánico de las fibras. Posteriormente, se elaboraron filtros con los materiales caracterizados y se llevaron a cabo pruebas de filtración utilizando una solución de cromo total preparada en los laboratorios de la Pontificia Universidad Católica del Ecuador Sede Ibarra. Las técnicas e instrumentos incluyeron análisis químicos estándar para determinar las propiedades de las fibras y ensayos de filtración para evaluar la eficiencia de remoción de cromo. Los resultados mostraron que las fibras de coco presentaron una alta porosidad, lo que sugiere una buena capacidad para retener contaminantes. Sin embargo, los filtros elaborados con fibras de agave demostraron una mayor eficiencia en la remoción de cromo total, especialmente aquellos con un tamaño de partícula de 300 µm. En esta categoría, se registró una remoción promedio superior al 80%, con T2=85,72% y T3=89,15%. La prueba estadística de Tukey confirmó diferencias significativas en la eficacia de remoción entre los diferentes tamaños de partícula y tipos de biomateriales, destacando el agave de 300 µm como el más eficiente. En síntesis, los filtros elaborados con fibras de agave y coco son alternativas viables para la purificación de agua contaminada con cromo. No obstante, los filtros de agave, particularmente aquellos con partículas de 300 µm, demostraron una eficiencia significativamente mayor en la remoción de cromo total.
This research focuses on evaluating the efficacy of fibrous biomaterials from coconut (Cocos nucifera) and agave (Agave sp.) in the removal of total chromium from aqueous solutions. The central aim of the study is to determine the potential of these biomaterials as ecological alternatives for the remediation of contaminated water. The main objective is to physically and chemically characterize the materials, create filters from them, and measure their efficiency in removing total chromium, with a special focus on comparing their effectiveness based on particle size and fiber type. The research approach is experimental, with a quasi-experimental design. Physical and chemical tests were conducted to characterize the biomaterials, evaluating the pH, moisture content, ash content, and organic carbon of the fibers. Subsequently, filters were made with the characterized materials and filtration tests were carried out using a total chromium solution prepared in the laboratories of the Pontifical Catholic University of Ecuador, Ibarra campus. The techniques and instruments included standard chemical analyses to determine the properties of the fibers and filtration assays to evaluate the chromium removal efficiency. The results showed that coconut fibers exhibited high porosity, suggesting a good capacity for retaining contaminants. However, filters made from agave fibers demonstrated greater efficiency in removing total chromium, especially those with a particle size of 300 µm. In this category, an average removal of over 80% was recorded, with T2=85.72% and T3=89.15%. The Tukey statistical test confirmed significant differences in removal efficiency between the different particle sizes and types of biomaterials, highlighting 300 µm agave as the most efficient. In summary, filters made from agave and coconut fibers are viable alternatives for the purification of chromium-contaminated water. However, agave filters, particularly those with 300 µm particles, demonstrated significantly higher efficiency in total chromium removal.
This research focuses on evaluating the efficacy of fibrous biomaterials from coconut (Cocos nucifera) and agave (Agave sp.) in the removal of total chromium from aqueous solutions. The central aim of the study is to determine the potential of these biomaterials as ecological alternatives for the remediation of contaminated water. The main objective is to physically and chemically characterize the materials, create filters from them, and measure their efficiency in removing total chromium, with a special focus on comparing their effectiveness based on particle size and fiber type. The research approach is experimental, with a quasi-experimental design. Physical and chemical tests were conducted to characterize the biomaterials, evaluating the pH, moisture content, ash content, and organic carbon of the fibers. Subsequently, filters were made with the characterized materials and filtration tests were carried out using a total chromium solution prepared in the laboratories of the Pontifical Catholic University of Ecuador, Ibarra campus. The techniques and instruments included standard chemical analyses to determine the properties of the fibers and filtration assays to evaluate the chromium removal efficiency. The results showed that coconut fibers exhibited high porosity, suggesting a good capacity for retaining contaminants. However, filters made from agave fibers demonstrated greater efficiency in removing total chromium, especially those with a particle size of 300 µm. In this category, an average removal of over 80% was recorded, with T2=85.72% and T3=89.15%. The Tukey statistical test confirmed significant differences in removal efficiency between the different particle sizes and types of biomaterials, highlighting 300 µm agave as the most efficient. In summary, filters made from agave and coconut fibers are viable alternatives for the purification of chromium-contaminated water. However, agave filters, particularly those with 300 µm particles, demonstrated significantly higher efficiency in total chromium removal.
Description
Keywords
Biomateriales fibrosos, Agave, Coco, Remoción de cromo, Filtración