Influencia del tiempo y relación compostaje/aserrín de un humedal artificial, sobre remoción de fe(ii) y ph de soluciones ácidas.
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Date
2024
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Universidad Nacional de Trujillo
Abstract
El propósito de esta investigación se centró en analizar de qué manera la variación en la relación volumétrica de compostaje/aserrín y el tiempo de exposición afecta la remoción de Fe (II) y el pH en soluciones ácidas simuladas mediante un humedal artificial. La metodología abordó aspectos físico-químicos, utilizando técnicas como la medición de concentración de Fe (II) por espectrofotometría uv-visible, pH y conductividad eléctrica. El diseño experimental fue de enfoque explicativo, aplicado y cuantitativo; como también de tipo bifactorial. Contemplando diferentes relaciones volumétricas de compostaje/aserrín (1/2, 1/1, 2/1) y tiempos de operación de 12 a 120 horas. Se construyeron y operaron humedales artificiales, cada uno con una relación específica de compostaje/aserrín, y se llevaron a cabo mediciones periódicas de las propiedades físico- químicas. Como resultado, se evidenció que a medida que se incrementaba la proporción de compostaje en la relación volumétrica, se observaba un aumento gradual en los valores de pH. Este fenómeno se asoció con la liberación de ácidos orgánicos durante la descomposición del compostaje, actuando como agentes taponadores que contrarrestan la acidez inicial de las soluciones. En cuanto a la remoción de Fe (II), se notó una tendencia creciente a lo largo del tiempo, independientemente de la relación volumétrica. Esta mejora en la eficiencia se atribuyó a procesos biológicos y químicos que se intensifican con la duración de la operación del humedal. Concluyendo que, la interacción entre estas variables demuestra tener un impacto significativo, resaltando la importancia de considerar tanto la composición del material de compostaje como el tiempo de exposición de aguas en humedales anaeróbicos.
The purpose of this research focused on analyzing how the variation in the volumetric ratio of compost/sawdust and the exposure time affects the removal of Fe (II) and the pH in acidic solutions simulated using an artificial wetland. The methodology addressed physical-chemical aspects, using techniques such as the measurement of Fe (II) concentration by UV-visible spectrophotometry, pH and electrical conductivity. The experimental design had an explanatory, applied and quantitative approach; as well as bifactor type. Considering different volumetric ratios of composting/sawdust (1/2, 1/1, 2/1) and operation times from 12 to 120 hours. Constructed wetlands, each with a specific compost/sawdust ratio, were constructed and operated, and periodic measurements of physicochemical properties were carried out. As a result, it was evident that as the proportion of composting in the volumetric ratio increased, a gradual increase in pH values was observed. This phenomenon is solved with the release of organic acids during the decomposition of the compost, acting as plugging agents that counteract the initial acidity of the compost. Regarding the removal of Fe (II), an increasing trend was noted over time, regardless of the volumetric ratio. This improvement in efficiency was attributed to biological and chemical processes that intensify with the duration of wetland operation. Concluding that, the interaction between these variables proves to have a significant impact, highlighting the importance of considering both the composition of the composting material and the exposure time of water in anaerobic wetlands.
The purpose of this research focused on analyzing how the variation in the volumetric ratio of compost/sawdust and the exposure time affects the removal of Fe (II) and the pH in acidic solutions simulated using an artificial wetland. The methodology addressed physical-chemical aspects, using techniques such as the measurement of Fe (II) concentration by UV-visible spectrophotometry, pH and electrical conductivity. The experimental design had an explanatory, applied and quantitative approach; as well as bifactor type. Considering different volumetric ratios of composting/sawdust (1/2, 1/1, 2/1) and operation times from 12 to 120 hours. Constructed wetlands, each with a specific compost/sawdust ratio, were constructed and operated, and periodic measurements of physicochemical properties were carried out. As a result, it was evident that as the proportion of composting in the volumetric ratio increased, a gradual increase in pH values was observed. This phenomenon is solved with the release of organic acids during the decomposition of the compost, acting as plugging agents that counteract the initial acidity of the compost. Regarding the removal of Fe (II), an increasing trend was noted over time, regardless of the volumetric ratio. This improvement in efficiency was attributed to biological and chemical processes that intensify with the duration of wetland operation. Concluding that, the interaction between these variables proves to have a significant impact, highlighting the importance of considering both the composition of the composting material and the exposure time of water in anaerobic wetlands.
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Soluciones ácidas