Examinando por Materia "Manure"

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    Colonias bacterianas presentes en el estiércol de gallinas blancas de la cepa Leghorn responsables de la biodegradación de petróleo en suelos contaminados
    (Universidad Privada Norbert Wiener, 2017) Muñoz Vítor, Jim Maycol; Pacheco Miranda, Mabel; Chávez Flores, Juana Elvira
    The purpose of this study was to evaluate the process of hydrocarbon biodegradation in contaminated soil, employing microbiological colonies present in the manure of white Leghorn strain chickens. The methodology included three analyses: first, an analysis of variance for a Completely Randomized Block Design (CRBD), using a 2A3B factorial model with six replicates (6 pots), totaling 36 experimental pots (1 kg each); second, an analysis of variance (ANOVA) with Tukey's post-hoc test; and finally, a simple linear regression analysis to determine hydrocarbon degradation by environmental factors. The parameters determined were: total hydrocarbons, moisture, pH, microbiological count, temperature, and time. The pots were exposed outdoors for 180 days. Results showed that treatment B3 (bacterial colonies present in white Leghorn chicken manure plus oak sawdust plus Triticum aestivum seed) in hydrocarbon-contaminated soil decreased short-chain hydrocarbons C6−C10 by an average of 97.4%, medium-chain hydrocarbons C10−C35 by only 92.95%, and long-chain hydrocarbons C10−C28 by 30%. This demonstrated that treatment B3 is responsible for the degradation of petroleum hydrocarbons, showing a high overall removal percentage of 91.1% for total hydrocarbons compared to treatments B1 and B2.