{"id":90169,"date":"2018-03-10T00:15:33","date_gmt":"2018-03-10T00:15:33","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/intercambio-ionico-de-criii-y-regeneracion-oxidativa-de-resinas-cationicas\/"},"modified":"2018-03-10T00:15:33","modified_gmt":"2018-03-10T00:15:33","slug":"intercambio-ionico-de-criii-y-regeneracion-oxidativa-de-resinas-cationicas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/intercambio-ionico-de-criii-y-regeneracion-oxidativa-de-resinas-cationicas\/","title":{"rendered":"Intercambio i\u00f3nico de cr(iii) y regeneraci\u00f3n oxidativa de resinas cati\u00f3nicas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Moufdi Kamel Kebdani <\/strong><\/h2>\n<p>El presente trabajo de investigaci\u00f3n se enmarca dentro de un proyecto sobre el tratamiento de los residuos acusoso de tener\u00edas y espec\u00edficamente de cromo (iii).  primeramente se han estudiado los equilibrios de hidr\u00f3lisis del cromo (iii) en disoluci\u00f3n acuosa, con el fin de evaluar su influencia sobre la distribuci\u00f3n de esta especie met\u00e1lica en los intercambiadores i\u00f3nicos.  se ha estudiado tambi\u00e9n la cin\u00e9tica de oxidaci\u00f3n en fase homog\u00e9nea de cr(iii) a cr(iv) mediante per\u00f3xido de hidr\u00f3geno en medio alcalino utilizando un sistema automatizado de an\u00e1lisis en flujo continuo cfa.  a continuaci\u00f3n, se ha llevado a cabo la caracterizaci\u00f3n de los intercambiadores i\u00f3nicos elegidos para la retenci\u00f3n del cromo (iii) la resina sulf\u00f3nica lewatit s 100 y la resina carbox\u00edlica lewatit cnp 80, ambas suminsitradas por bayer ag.  en tercer lugar, se han analizado los aspectos b\u00e1sicos de equilibrio y cin\u00e9tica de retencion de cromo en las resinas cati\u00f3nicas indicadas, para la correcta comprensi\u00f3n de los fen\u00f3menos que tienen lugar en los procesos de separaci\u00f3n-concentraci\u00f3n. La influencia de par\u00e1metros que puedan ser utilizados como posibles potenciales en operaciones (temperatura, ph, fuerza i\u00f3nica, composici\u00f3n, relaci\u00f3n l\u00edquido\/s\u00f3lido) ha sido tambien estudiada.  finalmente, se han valorado las condiciones adecuadas para una eluci\u00f3n del maetal cargado y regeneraci\u00f3n efectiva del intercambiador, ya que la regeneraci\u00f3n ineficiente es un problema que frecuentemente se presenta en la pr\u00e1ctica industrial, repercutiendo negativamente en la econom\u00eda del proceso. Para la eluci\u00f3n del cromo cargado se han utilizado diferentes \u00e1cidos inorg\u00e1ncios (clorh\u00eddrico, sulf\u00farico), variando su concentraci\u00f3n entre 1m y 6+m, y las condiciones experimentales (l\u00edquido\/s\u00f3lido, caudal, altura del lecho). P\u00ed\u00aaro, como se ha mencionado anteriormente, la eluci\u00f3n en medio \u00e1cido no proprociona un elevado grado de extracci\u00f3n del metal.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Intercambio i\u00f3nico de cr(iii) y regeneraci\u00f3n oxidativa de resinas cati\u00f3nicas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Intercambio i\u00f3nico de cr(iii) y regeneraci\u00f3n oxidativa de resinas cati\u00f3nicas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Moufdi Kamel Kebdani <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 17\/05\/2001<\/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>Federico Mijangos Anton<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: francisca Vicente estevez <\/li>\n<li>inmaculada Ortiz uribe (vocal)<\/li>\n<li> Fern\u00e1ndez fern\u00e1ndez Mar\u00eda  aurora (vocal)<\/li>\n<li>  (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Moufdi Kamel Kebdani El presente trabajo de investigaci\u00f3n se enmarca dentro de un proyecto sobre el tratamiento [&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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