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Browsing by Author "Salinas Alzate, Natalia Andrea"

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    Aislamiento de consorcio de microorganismos degradadores de cianuro
    (Corporación Universitaria Lasallista, 2006) Garcés Molina, Adelaida María; Agudelo Betancur, Lina Marcela; Macías Mazo, Karina Isabel; Salinas Alzate, Natalia Andrea
    Introduction. Cyanide is used in the mining industry to recover gold, in the shape of a solution, from mother material. This compound is highly toxic and generates great environmental problems, therefore several physical and chemical technologies have been developed to solve them. Materials and methods. Three microogranisms´ consortiums were isolated from soils coming from gold mines in the municiple of Amalfi, Antioquia, where the gold extraction is made with mercuriy. o select the most efficient microorganisms the consortiums were cultivated in nutritive broth, increasing the potasium cyanide concentration from 2x10-4 ppm to 2000 ppm. All the process was made under aerobic and anaerobic conditions. Later, the nutritive broth was replaced, step by step, with minimum mineral medium, with 2000 ppm of potasium cyanide as a source of carbon and nitrogen. All the cultivation mediums were prepared at a pH value of 7. During this last stage, the consumed cyanide was quantified with a cyanide selective ion electrode. Results. During the development of this work consortiums of microorganisms were isolated from soils coming from mining zones, and their efficiency for the degradation of potasium cyanide was determined. Conclusion: The biological degradation can be a better alternative to eliminate this contaminant.
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    Alternativas de tratamientos y disposición final de los productos vegetales originados por la tala, poda, jardinería y rocería en el municipio de Itagüí.
    (Corporación Universitaria Lasallista, 2018) Salinas Alzate, Natalia Andrea; Arango Ruiz, Álvaro de Jesús
    La presente monografía se elaboró con el fin de efectuar una revisión bibliográfica sobre las diferentes alternativas de almacenamiento, recolección, tratamiento y disposición final de los residuos verdes originados por la actividad de tala, poda, jardinería y rocería en el municipio de Itagüí. Basado en los procesos y las experiencias que se han desarrollado e implementado a nivel nacional e internacional. Así mismo se indagó sobre el marco normativo vigente a nivel internacional, nacional y municipal, para considerar las alternativas de acuerdo al contexto que actualmente las regula. En esta revisión se concluyó que los residuos vegetales pueden ser aprovechados para obtener material vegetal picado, compostaje; utilizados como aporte de nutrientes y biomasa como fuente de energía renovable no convencional.