{"id":39436,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/comportamiento-quimico-e-isotopico-durante-el-proceso-de-precipitacion-de-calcita\/"},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"comportamiento-quimico-e-isotopico-durante-el-proceso-de-precipitacion-de-calcita","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-tierra-y-del-espacio\/comportamiento-quimico-e-isotopico-durante-el-proceso-de-precipitacion-de-calcita\/","title":{"rendered":"Comportamiento quimico e isotopico durante el proceso de precipitacion de calcita."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Concepcion Jimenez Lopez <\/strong><\/h2>\n<p>El establecimiento de las condiciones de precipitaci\u00f3n de calcita en equilibrio-desequilibrio isot\u00f3pico es de gran importancia, dado que una de las aplicaciones m\u00e1s relevantes de la geoqu\u00edmica de is\u00f3topos estables es la determinaci\u00f3n de la temperatura de formaci\u00f3n de un mineral a partir de su composici\u00f3n isot\u00f3pica mediante ecuaciones geotermom\u00e9tricas, que est\u00e1n basadas en la suposici\u00f3n de que el mineral precipita en equilibrio isot\u00f3pico con la soluci\u00f3n. Sin embargo, la hip\u00f3tesis de simultaneidad entre equilibrio qu\u00edmico e isot\u00f3pico no ha sido aun probada y podr\u00eda no ser cierta de partida dado la diferencia de m\u00e1s de tres \u00f3rdenes de magnitud entre la energ\u00eda libre de gibbs asociada a la precipitaci\u00f3n y a las reacciones de intercambio isot\u00f3pico. As\u00ed, el objetivo  fundamental de esta memoria ha sido el establecimiento de las condiciones de precipitaci\u00f3n de la calcita en equilibrio o desequilibrio isot\u00f3pico con la soluci\u00f3n a partir de la cual precipita y el efecto de factores como la velocidad de precipitaci\u00f3n, sobresaturaci\u00f3n del sistema, temperatura y presencia de iones en soluci\u00f3n diferentes al ca2+ en el estado de equilibrio isot\u00f3pico.  para ello se ha puesto a punto un nuevo macrom\u00e9todo de precipitaci\u00f3n de calcita, adecuado para estudios cin\u00e9ticos durante el proceso de precipitaci\u00f3n y que permite el control de la fase polim\u00f3rfica del carbonato c\u00e1lcico, tiempo de inducci\u00f3n para la precipitaci\u00f3n, n\u00famero y tama\u00f1o de los cristales. Se han realizado experimentos de precipitaci\u00f3n de calcita en condiciones controladas de temperatura, presi\u00f3n y composici\u00f3n qu\u00edmica y se ha estudiado tanto la cin\u00e9tica qu\u00edmica como la isot\u00f3pica del proceso, pudi\u00e9ndose determinar el estado de equilibrio qu\u00edmico y el estado de equilibrio isot\u00f3pico. Adem\u00e1s se ha establecido la influencia de la velocidad de precipitaci\u00f3n, sobresaturaci\u00f3n, temperatura, realizando los experimentos de precipitaci\u00f3n a 15, 25, 32<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Comportamiento quimico e isotopico durante el proceso de precipitacion de calcita.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Comportamiento quimico e isotopico durante el proceso de precipitacion de calcita. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Concepcion Jimenez Lopez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Granada<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Emilia Caballero Mesa<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jos\u00e9 Linares gonz\u00e1lez <\/li>\n<li>alfonso Sope\u00f1a ortega (vocal)<\/li>\n<li>Fernando Gonzalez caballero (vocal)<\/li>\n<li>jordi Delgado mart\u00edn (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Concepcion Jimenez Lopez El establecimiento de las condiciones de precipitaci\u00f3n de calcita en equilibrio-desequilibrio isot\u00f3pico es de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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