Estudio comparativo de los caracteres fisicoquímicos de las excretas producto de la biodegradación del poliestireno de Tenebrio molitor y Zophobas morio
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2022
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Universidad de Guayaquil. Facultad de Ciencias Químicas
Resumen
A nivel mundial el 38% de la superficie de la tierra se utiliza para la agricultura y se restituye solo la mitad de los nutrientes que los cultivos utilizan del suelo (FAO , 2020). Por lo cual es importante evaluar la propiedad fertilizante de las excretas de Tenebrio molitor y Zophobas morio mediante los parámetros fisicoquímicos del producto de la digestión del poliestireno. Para Materia orgánica y carbono se aplicó el método Wlackley & Black por volumetría, resultando para Tenebrio molitor MO 39,71% y Carbono 24,82%, mientras que Zophobas morio presentó MO 47.97% y Carbono 29,98%, la determinación de Nitrógeno Total se realizó mediante el método AOAC 955.04 dando como resultados para Tm 6,85% , en Fósforo se realizó con el método AOAC 958.01 dando 0,83% y en Potasio se utilizó el método EPA 3050-B con 0,25%, en el caso de Zm Nitrógeno Total fue 9,93%%, en Fósforo 1.02% y en Potasio 0,85%. Al contrastar los resultados obtenidos con el Manual Técnico para el Registro y Control de fertilizantes se observó que tanto para Tm y Zm en Materia Orgánica y Carbono cumple con el rango establecido en el manual, mientras que, para ambos coleópteros en N, P, K no cumplen con el rango determinado.
Globally, 38% of the land surface is used for agriculture, and only half of the nutrients used by crops are returned from the soil (1). Therefore, it is important to evaluate the fertilizer property of the excreta of Tenebrio molitor and Zophobas morio through the physicochemical parameters of the polystyrene digestion product. For organic matter and carbon, the Wlackley & Black method was applied by volumetry, resulting for Tenebrio molitor MO 39.71% and Carbon 24.82%, while Zophobas morio presented MO 47.97% and Carbon 29.98%, the determination of Nitrogen Total was carried out using the AOAC 955.04 method giving results for Tm 6.85%, in Phosphorus it was carried out with the AOAC 958.01 method giving 0.83% and in Potassium the EPA 3050-B method was used with 0.25%, in the case of Zm Total Nitrogen was 9.93%%, in Phosphorus 1.02% and in Potassium 0.85%. When contrasting the results obtained with the Technical Manual for the Registration and Control of fertilizers, it was observed that both for Tm and Zm in Organic Matter and Carbon it complies with the range established in the manual, while for both beetles in N, P, K it does not. meet the specified range.
Globally, 38% of the land surface is used for agriculture, and only half of the nutrients used by crops are returned from the soil (1). Therefore, it is important to evaluate the fertilizer property of the excreta of Tenebrio molitor and Zophobas morio through the physicochemical parameters of the polystyrene digestion product. For organic matter and carbon, the Wlackley & Black method was applied by volumetry, resulting for Tenebrio molitor MO 39.71% and Carbon 24.82%, while Zophobas morio presented MO 47.97% and Carbon 29.98%, the determination of Nitrogen Total was carried out using the AOAC 955.04 method giving results for Tm 6.85%, in Phosphorus it was carried out with the AOAC 958.01 method giving 0.83% and in Potassium the EPA 3050-B method was used with 0.25%, in the case of Zm Total Nitrogen was 9.93%%, in Phosphorus 1.02% and in Potassium 0.85%. When contrasting the results obtained with the Technical Manual for the Registration and Control of fertilizers, it was observed that both for Tm and Zm in Organic Matter and Carbon it complies with the range established in the manual, while for both beetles in N, P, K it does not. meet the specified range.
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TENEBRIO MOLITOR, ZOPHOBAS MORIO, POLIESTIRENO, BIODEGRADACIÓN