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Cinética de Procesos Químicos en la Ciénaga de Tesca

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Cinética de procesos químicos ...
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Author
Castro Suárez, Luz Ángela
Piermattey, Jhoan
Torres, Juan
Tuchkovenko, Yuri S.
Vélez, María Teresa
Corporate Author
Dirección General Marítima
Date
2002

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Abstract
Se presenta la información requerida para la calibración de un modelo matemático del ecosistema de la Ciénaga de Tesca de Cartagena, obtenida mediante la realización de experimentos químicos. Los parámetros cinéticos de la oxidación bioquímica se obtuvieron por el "método de la DBO", mientras que las tasas de flujo de amonio y fosfato a través de la interfase agua - sedimento fueron evaluadas por medio de la Ley de Fick y el "modelo de descomposición de la materia orgánica en sedimentos". La constante cinética del proceso de degradación de la materia orgánica resultó ser de 0.23 dial, así mismo se encontró que las constantes del primer y segundo estadío de la nitrificación son 0,09 y 0,44 día-1 respectivamente. Se observaron tasas de flujo de nutrientes que oscilaron entre 30 y 4300 mg.m-2 día -1 para el amonio y de 0.4 a 3.5 mg.m-2 día -1 día para el fosfato. Las tasas de flujo bental de nutrientes fueron varios órdenes de magnitud más altas que las reportadas para otros ecosistemas, indicando que cuantitativamente este proceso biogeoquímico aporta grandes cantidades de amonio y fosfatos al agua de la Ciénaga, afectando negativamente la calidad de agua de este ecosistema.
The information required for the calibration of a mathematical model of the ecosystem of Cienaga de Tesca (the Tesca Swamp) is presented, it was obtained by carrying out analytical techniques. The kinetic parameters of biochemical oxidation were obtained by the "DBO method", while the measurement of (luxes rates of nutrients across the interfase between the sediment and the water column were evaluated using Fick's Law and the umodel of organic matter decomposition." The kinetic constant of the ammonization process resulted in 0.23 dia l, and it was also found that the first and second state of nitrification were 0,09 y 0,44 día- ', respectively. High flow rates oí fluids were observed and oscillated between 30 to 4300 mg.m-2 día-1 for ammonia and 0.4 a 3.5 mg.m-2 día -1 for phosphate. Bental flow rates for nutrients were several orders of magnitude greater than the reported one in the fountains revised, indicating that quantitatively this biogeochemist process provides great amounts of ammonia and phosphate to the Marsh waters, negatively affecting negatively the water quality of this echosystem.
Journal
Boletín Científico CIOH
Issue/Article Nr
20
Page Range
pp.68-78
DOI
01200542.20.68_79
Resource/Dataset Location
http://cecoldodigital.dimar.mil.co/184/
URI
http://hdl.handle.net/1834/15385
ae974a485f413a2113503eed53cd6c53
01200542.20.68_79
Scopus Count
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DIMAR Publications

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