Carrera de Biotecnología

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    Evaluación de la capacidad fitorremediadora del Eichhornia crassipes y Salvinia natans en aguas residuales de la PTAR Artezón -Píllaro
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos y Biotecnología. Carrera de Biotecnología, 2024-08) Chiriboga Villagomez, Viviana Nataly; Flores Tapia, Nelly Esther
    This study examines water pollution exacerbated by industrial and urban discharges, affecting the quality of water essential for agricultural irrigation and health. Therefore, the phytoremediation capacity of the species S. natans and E. crassipes in the wastewater of the Artezón Píllaro WWTP was evaluated. During the acclimatization process, both plants demonstrated their suitability for phytoremediation, achieving a reduction in COD with S. natans and E. crassipes. Treatments with different masses were applied: for E. crassipes, M1 0-500 g, M2 501-700 g, and M3 (701-800 g); and for S. natans, M1 (0-400 g), M2 (401-800 g), and M3 (801-900 g). Physicochemical and microbiological parameter analyses were performed at intervals of 0, 7, 15, 30, and 45 days, following the protocols of the Hanna manual and the Standard Methods for the Examination of Water and Wastewater. The results showed that both plants reduce the levels of organic pollutants and heavy metals in the wastewater, varying according to the mass used and the type of plant. For E. crassipes, the M1 treatment showed high removal percentages in surfactants, total solids, ammoniacal nitrogen, COD, BOD, turbidity, color, chromium VI, copper, aluminum, total nitrogen, fecal coliforms, and total phosphorus. On the other hand, S. natans with the M3 treatment also showed efficient removal percentages in surfactants, total solids, ammoniacal nitrogen, COD, BOD, turbidity, color, chromium VI, copper, aluminum, total nitrogen, fecal coliforms, and total phosphorus.
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    Evaluación de la capacidad fitorremediadora de Eichhornia crassipes y Pistia stratiotes en efluentes secundarios de industrias textiles y de curtiembre de la Planta de Tratamiento de Aguas Residuales Puerto Arturo (EP-EMAPA-A)
    (Universidad Técnica de Ambato. Facultad de Ciencia e Ingeniería en Alimentos y Biotecnología. Carrera de Biotecnología, 2024-02) Buitrón Arellano, María de los Angeles; Flores Tapia, Nelly Esther
    The growing issue of water pollution due to industrial discharges has led to an urgent need to find effective solutions in wastewater treatment plants worldwide. This study aims to investigate the phytoremediation capacity of Eichhornia crassipes and Pistia stratiotes in wastewater from textile and tanning industries, contributing to the improvement of the treatment process at the Puerto Arturo Wastewater Treatment Plant (EP-EMAPA-A). Experiments were conducted using the plants individually and in combination. Subsequently, physicochemical analyses of the parameters were carried out over a period of 2 months, with samples taken every 7, 15, 30, and 60 days. Wastewater was then analyzed during the decontamination process using protocols established by Hanna and Hach, adapted from the Standard Methods for the Examination of Water and Wastewater. The results revealed that, individually, E. crassipes and P. stratiotes demonstrated notable abilities to remove contaminants, reaching optimal levels on the 30th day of the study. Specifically, E. crassipes excelled in the removal of turbidity, sulfates, and surfactants with percentages between 80 and 90 percent, while P. stratiotes proved effective in total suspended solids, total solids, COD, and BOD5, with percentages also ranging between 80 and 90 percent. The combination of both plants exhibited synergy only in color removal, with a percentage of 87,08 percent, although favorable results were not observed in other parameters.