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Biosolids generated as waste from a Wastewater Treatment Plant (WTP) are a pollution problem by the provision of large volumes in landfills and the waste of their potential as an agricultural input. The research conducted trials to analyze the agricultural use of biosolids in a food company's WTP, their effects on the germination and development of the vegetal plant species Coriandrum sativum were assessed through trials that mixed different amounts of biosolids, land soil and commercial fertilizer, and took into account: planting site characteristics, biosolid and Coriandrum sativum. A random block design was made to compare treatments understudy and resulted in the combination of 50% biosolids with 50% land soil was the best test by germination, height, mass and length of the roots of the plant studied. In the evaluation of results, the behavior of dependent variables was analyzed: germination, height, mass and length with respect to the four test types with their respective repetitions using ANOVA and Fisher's significant minimum difference (LSD) to determine the effect the biosolid had on the plant and to know the optimal dose for its development. The germination rate (GR) was also determined in the trials, and 98.3% was found for the best treatment indicating that the substrate does not contain phytotoxic elements.

Plastics have a high resistance to degradation so they last several years in the environment, generating impacts that make it necessary to find mechanisms that contribute to their decomposition. This study evaluated the biodegradation of plastics such as polyethylene, polystyrene and polypropylene using the Aspergillus flavus fungus, obtained and incubated in the laboratory. The fungus planted in two types of agar (YGC and SDA) was put in contact with the three types of plastic. It was observed that by using two types of agar such as Yeast extract glucose chloramphenicol Agar (YGC) and Sabouraud Dextrose Agar (SDA) for the cultivation of the Aspergillus flavus fungus, there were favorable conditions for the biodegradation of the plastic, leading to better results with YGC agar, since it was possible to obtain a maximum reduction in the polyethylene mass of 23.6% with respect to the initial mass. It was demonstrated that A. flavus degrades polyethylene in greater percentages to other fungi, such as A. niger, and other plastics such as polystyrene and polypropylene. The multifactor ANOVA, used as a dependent variable the decrease in the percentage of mass of the plastic and as factors the type of agar and the type of plastic, showed that the type of agar used, had greater incidence, and was more selective for the Aspergillus flavus agar YGC The result of the multifactor ANOVA accepts the alternative hypothesis: there are differences between YGC and SDA agars in the plastics used in the tests., Los plásticos poseen una alta resistencia a la degradación por lo que perduran varios años en el ambiente, generando impactos que hacen necesario la búsqueda de mecanismos que contribuyan a su descomposición. Este estudio evaluó la biodegradación de plásticos como el polietileno, poliestireno y polipropileno mediante el hongo Aspergillus flavus, obtenido e incubado en el laboratorio.  El hongo sembrado en dos tipos de agar (YGC y SDA) fue puesto en contacto con los tres tipos de plástico.  Se observa que mediante el uso de dos tipos de agar como el Yeast extract glucose chloramphenicol Agar (YGC) y el Agar Sabouraud Dextrose (SDA) para el cultivo del hongo Aspergillus flavus se tuvieron condiciones favorables para la biodegradación del plástico, siendo mejores los resultados hallados con el agar YGC, con un valor máximo de disminución de la masa del polietileno del 23,6% con respecto a la masa inicial. Se demostró que el A. flavus degrada el polietileno en porcentajes mayores a otros hongos, como A. niger, y a otros plásticos como poliestireno y polipropileno. El ANOVA multifactorial, usó como variable dependiente la disminución del porcentaje de masa del plástico y como factores el tipo de agar y el tipo de plástico, arrojó que tuvo mayor incidencia el tipo de agar utilizado, y fue más selectivo para el Aspergillus flavus el agar YGC. El resultado del ANOVA multifactorial acepta la hipótesis alternativa: sí existen diferencias entre los agares YGC y SDA en los plásticos utilizados en los ensayos.