Bioingeniería
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Browsing Bioingeniería by Author "Cárdenas Talero, José Luis"
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Item Evaluación del crecimiento y desarrollo vegetal del rábano a partir del aprovechamiento de los lodos en un sistema de tratamiento de agua residual(Universidad Santiago de Cali, 2024) Victoria Villalba, Hernán Felipe; Cárdenas Talero, José Luis; Silva Leal, Jorge AntonioIn recent years, population growth has significantly increased the demand for natural resources and the generation of wastewater. In this context, it is essential to integrate Wastewater Treatment Plants (WWTPs) into a circular economy. WWTPs produce reusable by-products such as gas, treated wastewater, and sludge. Stabilized sludge (biosolids) contains nutrients that can improve soil and substitute chemical fertilizers in agriculture. This study evaluates the suitability of secondary sludge and drying sludge from a WWTP with an extended aeration activated sludge system for use in radish cultivation. Pots of 0.7 L were used, and the treatments included a control group (soil and mineral fertilizer) and an experimental group with sludge applications at different rates, according to the nitrogen (N) and phosphorus (P) requirements for radish cultivation. The results showed that secondary sludge did not achieve optimal radish development compared to the controls. However, dehydrated sludge demonstrated beneficial effects, with significant increases in leaf area and plant biomass compared to the controls. Analysis of variance (ANOVA) and Tukey's test showed significant differences in the variables, highlighting dehydrated sludge at 2P dosage as the most effective. Dehydrated sludge significantly improved the growth and development of radishes, suggesting it as an effective and sustainable alternative, promoting sustainable agricultural practices and reducing dependence on chemical fertilizers. However, both secondary and dehydrated sludge present a risk due to pathogen content, underscoring the need to implement sanitization treatments to reduce this pathogen content