{"id":4766,"date":"2023-05-25T11:22:52","date_gmt":"2023-05-25T09:22:52","guid":{"rendered":"https:\/\/gpt-dev.i3a.es\/?p=4766"},"modified":"2023-05-25T11:37:13","modified_gmt":"2023-05-25T09:37:13","slug":"cesar-gracia","status":"publish","type":"post","link":"https:\/\/gpt.i3a.es\/es\/cesar-gracia\/","title":{"rendered":"C\u00e9sar Gracia"},"content":{"rendered":"<div id=\"pl-gb4766-69df1df637977\"  class=\"panel-layout\" ><div id=\"pg-gb4766-69df1df637977-0\"  class=\"panel-grid panel-has-style\" ><div class=\"siteorigin-panels-stretch panel-row-style panel-row-style-for-gb4766-69df1df637977-0\" data-stretch-type=\"full-width-stretch\" ><div id=\"pgc-gb4766-69df1df637977-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-gb4766-69df1df637977-0-0-0\" class=\"so-panel widget widget_sow-hero panel-first-child panel-last-child\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-hero so-widget-sow-hero-default-93415d0e2dbf-4766 so-widget-fittext-wrapper\"\n\t\t\t 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Gracia<\/strong><\/h1>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<\/li>\n\t\t<\/ul>\t\t\t\t<ol class=\"sow-slider-pagination\">\n\t\t\t\t\t\t\t\t\t\t\t<li><a href=\"#\" data-goto=\"0\" aria-label=\"mostrar diapositiva 1\"><\/a><\/li>\n\t\t\t\t\t\t\t\t\t<\/ol>\n\n\t\t\t\t<div class=\"sow-slide-nav sow-slide-nav-next\">\n\t\t\t\t\t<a href=\"#\" data-goto=\"next\" aria-label=\"diapositiva siguiente\" data-action=\"next\">\n\t\t\t\t\t\t<em class=\"sow-sld-icon-thin-right\"><\/em>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\n\t\t\t\t<div class=\"sow-slide-nav sow-slide-nav-prev\">\n\t\t\t\t\t<a href=\"#\" data-goto=\"previous\" aria-label=\"diapositiva anterior\" data-action=\"prev\">\n\t\t\t\t\t\t<em class=\"sow-sld-icon-thin-left\"><\/em>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n\n<div id=\"pl-gb4766-69df1df63839a\"  class=\"panel-layout\" ><div id=\"pg-gb4766-69df1df63839a-0\"  class=\"panel-grid panel-no-style\" ><div 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https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/linkedin-12x12.png 12w\" sizes=\"auto, (max-width: 37px) 100vw, 37px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"sow-image-grid-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"#\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\ttarget=\"_blank\" \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\trel=\"noopener noreferrer\" \t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"37\" height=\"37\" src=\"https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/website.png\" class=\"sow-image-grid-image_html\" alt=\"\" title=\"\" srcset=\"https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/website.png 37w, https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/website-12x12.png 12w\" sizes=\"auto, (max-width: 37px) 100vw, 37px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"sow-image-grid-image\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"#\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\ttarget=\"_blank\" \t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\trel=\"noopener noreferrer\" \t\t\t\t\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"37\" height=\"37\" src=\"https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/google-scholar.png\" class=\"sow-image-grid-image_html\" alt=\"\" title=\"\" srcset=\"https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/google-scholar.png 37w, https:\/\/gpt.i3a.es\/wp-content\/uploads\/2020\/10\/google-scholar-12x12.png 12w\" sizes=\"auto, (max-width: 37px) 100vw, 37px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n<\/div><\/div><\/div><div id=\"panel-gb4766-69df1df63839a-0-1-1\" class=\"so-panel widget widget_sow-editor panel-last-child\" data-index=\"2\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<blockquote>\n<p><strong>Tel\u00e9fono:<\/strong><\/p>\n<p><strong>Email:<\/strong> c.gracia@unizar.es<\/p>\n<p><strong>Address:<\/strong> Office 31.080, R&amp;D Building, c\/Mariano Esquillor SN 50018 Zaragoza (Spain)<\/p>\n<\/blockquote>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\n\n<div id=\"pl-gb4766-69df1df639f36\"  class=\"panel-layout\" ><div id=\"pg-gb4766-69df1df639f36-0\"  class=\"panel-grid panel-has-style\" ><div class=\"panel-row-style panel-row-style-for-gb4766-69df1df639f36-0\" ><div id=\"pgc-gb4766-69df1df639f36-0-0\"  class=\"panel-grid-cell\" ><div id=\"panel-gb4766-69df1df639f36-0-0-0\" class=\"so-panel widget widget_sow-headline panel-first-child\" data-index=\"0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-headline so-widget-sow-headline-default-244eb6bef45a-4766\"\n\t\t\t\n\t\t><div class=\"sow-headline-container\">\n\t\t\t\t\t\t\t<h5 class=\"sow-headline\">\n\t\t\t\t\t\tSOBRE M\u00cd\t\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"decoration\">\n\t\t\t\t\t\t<div class=\"decoration-inside\"><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n<\/div><\/div><div id=\"panel-gb4766-69df1df639f36-0-0-1\" class=\"so-panel widget widget_sow-editor panel-last-child\" data-index=\"1\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-editor so-widget-sow-editor-base\"\n\t\t\t\n\t\t>\n<div class=\"siteorigin-widget-tinymce textwidget\">\n\t<h4>Research Interests<\/h4>\n<p>Performing my PhD Research on <a href=\"https:\/\/gpt.i3a.es\/es\/efficient-and-sustainable-pyrolysis-without-gaseous-emissions\/\">carbon-negative pyrolysis system with autothermal operation<\/a> to obtain biochar, bio-oil and a pure stream of CO2. This research is within the <a href=\"https:\/\/gpt.i3a.es\/es\/abfine\/\">Ab-FINE Project<\/a>.<\/p>\n<p>Also, I\u2019m currently working in the development of a gasification pilot plant for obtaining biogas from textile and organic wastes. This research is within the <a href=\"https:\/\/gpt.i3a.es\/es\/nicer-biofuels\/\">NICER Biofuels Project<\/a>.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><div id=\"pg-gb4766-69df1df639f36-1\"  class=\"panel-grid panel-has-style\" ><div class=\"panel-row-style panel-row-style-for-gb4766-69df1df639f36-1\" ><div id=\"pgc-gb4766-69df1df639f36-1-0\"  class=\"panel-grid-cell\" ><div id=\"panel-gb4766-69df1df639f36-1-0-0\" class=\"so-panel widget widget_sow-headline panel-first-child\" data-index=\"2\" ><div class=\"panel-widget-style panel-widget-style-for-gb4766-69df1df639f36-1-0-0\" ><div\n\t\t\t\n\t\t\tclass=\"so-widget-sow-headline so-widget-sow-headline-default-244eb6bef45a-4766\"\n\t\t\t\n\t\t><div class=\"sow-headline-container\">\n\t\t\t\t\t\t\t<h5 class=\"sow-headline\">\n\t\t\t\t\t\tPUBLICATIONS\t\t\t\t\t\t<\/h5>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"decoration\">\n\t\t\t\t\t\t<div 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class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Garc\u00eda-Bacaicoa, Pedro;  Mastral, Jos\u00e9 Francisco;  Ceamanos, Jes\u00fas;  Berrueco, C\u00e9sar;  Serrano, S<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('396','tp_links')\" style=\"cursor:pointer;\">Gasification of biomass\/high density polyethylene mixtures in a downdraft gasifier<\/a> <span class=\"tp_pub_type tp_  article\">Art\u00edculo de revista<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">En: <\/span><span class=\"tp_pub_additional_journal\">Bioresource Technology, <\/span><span class=\"tp_pub_additional_volume\">vol. 99, <\/span><span class=\"tp_pub_additional_number\">no 13, <\/span><span class=\"tp_pub_additional_pages\">pp. 5485\u20135491, <\/span><span class=\"tp_pub_additional_year\">2008<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 09608524<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_396\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('396','tp_abstract')\" title=\"Mostrar resumen\" style=\"cursor:pointer;\">Resumen<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_396\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('396','tp_links')\" title=\"Mostrar enlaces y recursos\" style=\"cursor:pointer;\">Enlaces<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_396\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('396','tp_bibtex')\" title=\"Mostrar entrada BibTeX \" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_396\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Garcia-Bacaicoa2008,<br \/>\r\ntitle = {Gasification of biomass\/high density polyethylene mixtures in a downdraft gasifier},<br \/>\r\nauthor = {Pedro Garc\u00eda-Bacaicoa and Jos\u00e9 Francisco Mastral and Jes\u00fas Ceamanos and C\u00e9sar Berrueco and S Serrano},<br \/>\r\ndoi = {10.1016\/j.biortech.2007.11.003},<br \/>\r\nissn = {09608524},<br \/>\r\nyear  = {2008},<br \/>\r\ndate = {2008-09-01},<br \/>\r\njournal = {Bioresource Technology},<br \/>\r\nvolume = {99},<br \/>\r\nnumber = {13},<br \/>\r\npages = {5485--5491},<br \/>\r\npublisher = {Elsevier},<br \/>\r\nabstract = {In this work, an experimental study of the thermal decomposition of mixtures of wood particles and high density polyethylene in different atmospheres has been carried out in a downdraft gasifier with a nominal processing capacity of 50 kg\/h. The main objective was to study the feasibility of the operation of the gasification plant using mixtures and to investigate the characteristics of the gas obtained. In order to do so, experiments with biomass only and with mixtures with up to 15% HDPE have been carried out. The main components of the gas generated are N2 (50%), H2 (14%), CO (9-22%) and CO2 (7-17%) and its relatively high calorific value was adequate for using it in an internal combustion engine generator consisting of a modified diesel engine coupled with a 25 kV A alternator. textcopyright 2007 Elsevier Ltd. All rights reserved.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('396','tp_bibtex')\">Cerrar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_396\" style=\"display:none;\"><div class=\"tp_abstract_entry\">In this work, an experimental study of the thermal decomposition of mixtures of wood particles and high density polyethylene in different atmospheres has been carried out in a downdraft gasifier with a nominal processing capacity of 50 kg\/h. The main objective was to study the feasibility of the operation of the gasification plant using mixtures and to investigate the characteristics of the gas obtained. In order to do so, experiments with biomass only and with mixtures with up to 15% HDPE have been carried out. The main components of the gas generated are N2 (50%), H2 (14%), CO (9-22%) and CO2 (7-17%) and its relatively high calorific value was adequate for using it in an internal combustion engine generator consisting of a modified diesel engine coupled with a 25 kV A alternator. textcopyright 2007 Elsevier Ltd. All rights reserved.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('396','tp_abstract')\">Cerrar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_396\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.biortech.2007.11.003\" title=\"DOI de seguimiento:10.1016\/j.biortech.2007.11.003\" target=\"_blank\">doi:10.1016\/j.biortech.2007.11.003<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('396','tp_links')\">Cerrar<\/a><\/p><\/div><\/div><\/div><h3 class=\"tp_h3\" id=\"tp_h3_2007\">2007<\/h3><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Mastral, Jos\u00e9 Francisco;  Berrueco, C\u00e9sar;  Ceamanos, Jes\u00fas<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('410','tp_links')\" style=\"cursor:pointer;\">Theoretical prediction of product distribution of the pyrolysis of high density polyethylene<\/a> <span class=\"tp_pub_type tp_  article\">Art\u00edculo de revista<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">En: <\/span><span class=\"tp_pub_additional_journal\">Journal of Analytical and Applied Pyrolysis, <\/span><span class=\"tp_pub_additional_volume\">vol. 80, <\/span><span class=\"tp_pub_additional_number\">no 2, <\/span><span class=\"tp_pub_additional_pages\">pp. 427\u2013438, <\/span><span class=\"tp_pub_additional_year\">2007<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 01652370<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_410\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('410','tp_abstract')\" title=\"Mostrar resumen\" style=\"cursor:pointer;\">Resumen<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_410\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('410','tp_links')\" title=\"Mostrar enlaces y recursos\" style=\"cursor:pointer;\">Enlaces<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_410\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('410','tp_bibtex')\" title=\"Mostrar entrada BibTeX \" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_410\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Mastral2007b,<br \/>\r\ntitle = {Theoretical prediction of product distribution of the pyrolysis of high density polyethylene},<br \/>\r\nauthor = {Jos\u00e9 Francisco Mastral and C\u00e9sar Berrueco and Jes\u00fas Ceamanos},<br \/>\r\ndoi = {10.1016\/j.jaap.2006.07.009},<br \/>\r\nissn = {01652370},<br \/>\r\nyear  = {2007},<br \/>\r\ndate = {2007-10-01},<br \/>\r\njournal = {Journal of Analytical and Applied Pyrolysis},<br \/>\r\nvolume = {80},<br \/>\r\nnumber = {2},<br \/>\r\npages = {427--438},<br \/>\r\npublisher = {Elsevier},<br \/>\r\nabstract = {The main objective of this work is the formulation and development of a model that predicts the product distribution obtained in the pyrolysis of polyethylene. In order to do this a mechanistic model has been developed based on a radical mechanism. This model uses a small number of elementary kinetic steps, including initiation, $beta$-scission, H-abstraction, aromatization and radical combination. The mechanism allows the prediction of the compounds obtained during the pyrolysis. Given the great number of species considered, the simulation of the pyrolysis process requires the solution of complex systems of ordinary differential equations. The results obtained have been validated with experimental results obtained in a free fall installation in which the pyrolysis process has been studied at different temperatures (500-1000 \u00b0C) and residence times (0.52-2.07 s). textcopyright 2007 Elsevier B.V. All rights reserved.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('410','tp_bibtex')\">Cerrar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_410\" style=\"display:none;\"><div class=\"tp_abstract_entry\">The main objective of this work is the formulation and development of a model that predicts the product distribution obtained in the pyrolysis of polyethylene. In order to do this a mechanistic model has been developed based on a radical mechanism. This model uses a small number of elementary kinetic steps, including initiation, $beta$-scission, H-abstraction, aromatization and radical combination. The mechanism allows the prediction of the compounds obtained during the pyrolysis. Given the great number of species considered, the simulation of the pyrolysis process requires the solution of complex systems of ordinary differential equations. The results obtained have been validated with experimental results obtained in a free fall installation in which the pyrolysis process has been studied at different temperatures (500-1000 \u00b0C) and residence times (0.52-2.07 s). textcopyright 2007 Elsevier B.V. All rights reserved.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('410','tp_abstract')\">Cerrar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_410\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.jaap.2006.07.009\" title=\"DOI de seguimiento:10.1016\/j.jaap.2006.07.009\" target=\"_blank\">doi:10.1016\/j.jaap.2006.07.009<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('410','tp_links')\">Cerrar<\/a><\/p><\/div><\/div><\/div><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Mastral, Jos\u00e9 Francisco;  Berrueco, C\u00e9sar;  Ceamanos, Jes\u00fas<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('414','tp_links')\" style=\"cursor:pointer;\">Modelling of the pyrolysis of high density polyethylene. Product distribution in a fluidized bed reactor<\/a> <span class=\"tp_pub_type tp_  article\">Art\u00edculo de revista<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">En: <\/span><span class=\"tp_pub_additional_journal\">Journal of Analytical and Applied Pyrolysis, <\/span><span class=\"tp_pub_additional_volume\">vol. 79, <\/span><span class=\"tp_pub_additional_number\">no 1-2 SPEC. ISS., <\/span><span class=\"tp_pub_additional_pages\">pp. 313\u2013322, <\/span><span class=\"tp_pub_additional_year\">2007<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 01652370<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_414\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('414','tp_abstract')\" title=\"Mostrar resumen\" style=\"cursor:pointer;\">Resumen<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_414\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('414','tp_links')\" title=\"Mostrar enlaces y recursos\" style=\"cursor:pointer;\">Enlaces<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_414\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('414','tp_bibtex')\" title=\"Mostrar entrada BibTeX \" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_414\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Mastral2007a,<br \/>\r\ntitle = {Modelling of the pyrolysis of high density polyethylene. Product distribution in a fluidized bed reactor},<br \/>\r\nauthor = {Jos\u00e9 Francisco Mastral and C\u00e9sar Berrueco and Jes\u00fas Ceamanos},<br \/>\r\ndoi = {10.1016\/j.jaap.2006.10.018},<br \/>\r\nissn = {01652370},<br \/>\r\nyear  = {2007},<br \/>\r\ndate = {2007-05-01},<br \/>\r\njournal = {Journal of Analytical and Applied Pyrolysis},<br \/>\r\nvolume = {79},<br \/>\r\nnumber = {1-2 SPEC. ISS.},<br \/>\r\npages = {313--322},<br \/>\r\npublisher = {Elsevier},<br \/>\r\nabstract = {The increase in the generation of plastic wastes has triggered the study of different alternatives for their recovery. Pyrolysis appears to be an interesting alternative for the treatment of mixtures of different plastics. The development of a model that simulates polyethylene pyrolysis (one of the most abundant plastics) has been considered interesting in order to analyse the influence of the operation variables on the behaviour of the system. The existing models predict the generation of the main products, paraffins, olefins and diolefins, but not the influence of temperature and residence time on the product distribution. Neither is the formation of aromatics and polyaromatics included. The main objective of this work is the formulation and development of a model that predicts the product distribution obtained in the pyrolysis of polyethylene. In order to do this a mechanistic model has been developed based on a radical mechanism. This model uses a small number of elementary kinetic steps, including initiation, $beta$-scission, H-abstraction, aromatization and radical combination. The results obtained have been validated with experimental results obtained in a fluidized bed reactor in which the pyrolysis process has been studied at different temperatures (640-700 \u00b0C) and residence times (0.8-2.6 s). The results show that the trends experimentally observed for the different temperatures and residence times studied are predicted. textcopyright 2006 Elsevier B.V. All rights reserved.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('414','tp_bibtex')\">Cerrar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_414\" style=\"display:none;\"><div class=\"tp_abstract_entry\">The increase in the generation of plastic wastes has triggered the study of different alternatives for their recovery. Pyrolysis appears to be an interesting alternative for the treatment of mixtures of different plastics. The development of a model that simulates polyethylene pyrolysis (one of the most abundant plastics) has been considered interesting in order to analyse the influence of the operation variables on the behaviour of the system. The existing models predict the generation of the main products, paraffins, olefins and diolefins, but not the influence of temperature and residence time on the product distribution. Neither is the formation of aromatics and polyaromatics included. The main objective of this work is the formulation and development of a model that predicts the product distribution obtained in the pyrolysis of polyethylene. In order to do this a mechanistic model has been developed based on a radical mechanism. This model uses a small number of elementary kinetic steps, including initiation, $beta$-scission, H-abstraction, aromatization and radical combination. The results obtained have been validated with experimental results obtained in a fluidized bed reactor in which the pyrolysis process has been studied at different temperatures (640-700 \u00b0C) and residence times (0.8-2.6 s). The results show that the trends experimentally observed for the different temperatures and residence times studied are predicted. textcopyright 2006 Elsevier B.V. All rights reserved.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('414','tp_abstract')\">Cerrar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_414\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.jaap.2006.10.018\" title=\"DOI de seguimiento:10.1016\/j.jaap.2006.10.018\" target=\"_blank\">doi:10.1016\/j.jaap.2006.10.018<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('414','tp_links')\">Cerrar<\/a><\/p><\/div><\/div><\/div><h3 class=\"tp_h3\" id=\"tp_h3_2006\">2006<\/h3><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Mastral, Jos\u00e9 Francisco;  Berrueco, C\u00e9sar;  Gea, M;  Ceamanos, Jes\u00fas<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('420','tp_links')\" style=\"cursor:pointer;\">Catalytic degradation of high density polyethylene over nanocrystalline HZSM-5 zeolite<\/a> <span class=\"tp_pub_type tp_  article\">Art\u00edculo de revista<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">En: <\/span><span class=\"tp_pub_additional_journal\">Polymer Degradation and Stability, <\/span><span class=\"tp_pub_additional_volume\">vol. 91, <\/span><span class=\"tp_pub_additional_number\">no 12, <\/span><span class=\"tp_pub_additional_pages\">pp. 3330\u20133338, <\/span><span class=\"tp_pub_additional_year\">2006<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 01413910<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_420\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('420','tp_abstract')\" title=\"Mostrar resumen\" style=\"cursor:pointer;\">Resumen<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_420\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('420','tp_links')\" title=\"Mostrar enlaces y recursos\" style=\"cursor:pointer;\">Enlaces<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_420\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('420','tp_bibtex')\" title=\"Mostrar entrada BibTeX \" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_420\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Mastral2006a,<br \/>\r\ntitle = {Catalytic degradation of high density polyethylene over nanocrystalline HZSM-5 zeolite},<br \/>\r\nauthor = {Jos\u00e9 Francisco Mastral and C\u00e9sar Berrueco and M Gea and Jes\u00fas Ceamanos},<br \/>\r\ndoi = {10.1016\/j.polymdegradstab.2006.06.009},<br \/>\r\nissn = {01413910},<br \/>\r\nyear  = {2006},<br \/>\r\ndate = {2006-12-01},<br \/>\r\njournal = {Polymer Degradation and Stability},<br \/>\r\nvolume = {91},<br \/>\r\nnumber = {12},<br \/>\r\npages = {3330--3338},<br \/>\r\npublisher = {Elsevier},<br \/>\r\nabstract = {High density polyethylene (HDPE) was catalytically degraded using a laboratory fluidised bed reactor in order to obtain high yield of gas fractions at mild temperatures, between 350 and 550 \u00b0C. The catalyst used was nanocrystalline HZSM-5 zeolite. High yields of butenes (25%) were found in the gas fractions, which were composed mainly of olefins. Waxes were wholly composed of linear and branched paraffins, with components between C10 and C20. The effects of both temperature and polymer to catalyst ratio on the product yield were studied. Gas conversion was dramatically decreased when the operation temperature was low (below 450 \u00b0C) or when the polymer to catalyst ratio was greatly increased (9.2). Gas and wax compositions significantly altered over 500 \u00b0C, showing that a part of the HDPE was degraded thermally, increasing the olefin concentration in the waxes. The same variation was observed in the experiments carried out at high polymer to catalyst ratios, obtaining a 50% olefinic concentration in the waxes. The differences observed in product distributions can be attributed to both thermal and catalytic degradations. textcopyright 2006 Elsevier Ltd. All rights reserved.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('420','tp_bibtex')\">Cerrar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_420\" style=\"display:none;\"><div class=\"tp_abstract_entry\">High density polyethylene (HDPE) was catalytically degraded using a laboratory fluidised bed reactor in order to obtain high yield of gas fractions at mild temperatures, between 350 and 550 \u00b0C. The catalyst used was nanocrystalline HZSM-5 zeolite. High yields of butenes (25%) were found in the gas fractions, which were composed mainly of olefins. Waxes were wholly composed of linear and branched paraffins, with components between C10 and C20. The effects of both temperature and polymer to catalyst ratio on the product yield were studied. Gas conversion was dramatically decreased when the operation temperature was low (below 450 \u00b0C) or when the polymer to catalyst ratio was greatly increased (9.2). Gas and wax compositions significantly altered over 500 \u00b0C, showing that a part of the HDPE was degraded thermally, increasing the olefin concentration in the waxes. The same variation was observed in the experiments carried out at high polymer to catalyst ratios, obtaining a 50% olefinic concentration in the waxes. The differences observed in product distributions can be attributed to both thermal and catalytic degradations. textcopyright 2006 Elsevier Ltd. All rights reserved.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('420','tp_abstract')\">Cerrar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_420\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1016\/j.polymdegradstab.2006.06.009\" title=\"DOI de seguimiento:10.1016\/j.polymdegradstab.2006.06.009\" target=\"_blank\">doi:10.1016\/j.polymdegradstab.2006.06.009<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('420','tp_links')\">Cerrar<\/a><\/p><\/div><\/div><\/div><div class=\"tp_publication tp_publication_article\"><div class=\"tp_pub_info\"><p class=\"tp_pub_author\"> Mastral, Jos\u00e9 Francisco;  Berrueco, C\u00e9sar;  Ceamanos, Jes\u00fas<\/p><p class=\"tp_pub_title\"><a class=\"tp_title_link\" onclick=\"teachpress_pub_showhide('424','tp_links')\" style=\"cursor:pointer;\">Pyrolysis of high-density polyethylene in free-fall reactors in series<\/a> <span class=\"tp_pub_type tp_  article\">Art\u00edculo de revista<\/span> <\/p><p class=\"tp_pub_additional\"><span class=\"tp_pub_additional_in\">En: <\/span><span class=\"tp_pub_additional_journal\">Energy and Fuels, <\/span><span class=\"tp_pub_additional_volume\">vol. 20, <\/span><span class=\"tp_pub_additional_number\">no 4, <\/span><span class=\"tp_pub_additional_pages\">pp. 1365\u20131371, <\/span><span class=\"tp_pub_additional_year\">2006<\/span>, <span class=\"tp_pub_additional_issn\">ISSN: 08870624<\/span>.<\/p><p class=\"tp_pub_menu\"><span class=\"tp_abstract_link\"><a id=\"tp_abstract_sh_424\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('424','tp_abstract')\" title=\"Mostrar resumen\" style=\"cursor:pointer;\">Resumen<\/a><\/span> | <span class=\"tp_resource_link\"><a id=\"tp_links_sh_424\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('424','tp_links')\" title=\"Mostrar enlaces y recursos\" style=\"cursor:pointer;\">Enlaces<\/a><\/span> | <span class=\"tp_bibtex_link\"><a id=\"tp_bibtex_sh_424\" class=\"tp_show\" onclick=\"teachpress_pub_showhide('424','tp_bibtex')\" title=\"Mostrar entrada BibTeX \" style=\"cursor:pointer;\">BibTeX<\/a><\/span><\/p><div class=\"tp_bibtex\" id=\"tp_bibtex_424\" style=\"display:none;\"><div class=\"tp_bibtex_entry\"><pre>@article{Mastral2006b,<br \/>\r\ntitle = {Pyrolysis of high-density polyethylene in free-fall reactors in series},<br \/>\r\nauthor = {Jos\u00e9 Francisco Mastral and C\u00e9sar Berrueco and Jes\u00fas Ceamanos},<br \/>\r\nurl = {https:\/\/pubs.acs.org\/sharingguidelines},<br \/>\r\ndoi = {10.1021\/ef060007n},<br \/>\r\nissn = {08870624},<br \/>\r\nyear  = {2006},<br \/>\r\ndate = {2006-07-01},<br \/>\r\njournal = {Energy and Fuels},<br \/>\r\nvolume = {20},<br \/>\r\nnumber = {4},<br \/>\r\npages = {1365--1371},<br \/>\r\npublisher = {American Chemical Society},<br \/>\r\nabstract = {Polyethylene pyrolysis has been studied analyzing the influence of temperature and residence time on the product distribution. The study was performed in an installation comprising two free-fall reactors in series, enabling the influence for both primary and secondary reactions to be studied separately. This also allows for the temperature to be increased in the second reaction zone, which is a parameter of great influence in the formation of aromatics. The use of reactors of different volume in the second zone also allows for the study of a broader range of residence times. The results obtained in the present work show qualitative trends similar to those obtained in other works of polyethylene pyrolysis in fluidized bed. At low temperatures, the main products obtained are solid waxes, while almost no aromatic compounds appear. The cracking rate increases with the rise in temperature, favoring the reaction of the heaviest fractions. Nevertheless, there are some differences. In general, ethylene, the direct product of the $beta$-scission of hydrocarbon chains, is the main compound in the gaseous fraction. The yields to methane and hydrogen increase as the temperature rises, with these being the final products of the degradation process and in the formation of aromatics. The production of aromatics and polycyclic aromatic hydrocarbons increases with the temperature and residence time. textcopyright 2006 American Chemical Society.},<br \/>\r\nkeywords = {},<br \/>\r\npubstate = {published},<br \/>\r\ntppubtype = {article}<br \/>\r\n}<br \/>\r\n<\/pre><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('424','tp_bibtex')\">Cerrar<\/a><\/p><\/div><div class=\"tp_abstract\" id=\"tp_abstract_424\" style=\"display:none;\"><div class=\"tp_abstract_entry\">Polyethylene pyrolysis has been studied analyzing the influence of temperature and residence time on the product distribution. The study was performed in an installation comprising two free-fall reactors in series, enabling the influence for both primary and secondary reactions to be studied separately. This also allows for the temperature to be increased in the second reaction zone, which is a parameter of great influence in the formation of aromatics. The use of reactors of different volume in the second zone also allows for the study of a broader range of residence times. The results obtained in the present work show qualitative trends similar to those obtained in other works of polyethylene pyrolysis in fluidized bed. At low temperatures, the main products obtained are solid waxes, while almost no aromatic compounds appear. The cracking rate increases with the rise in temperature, favoring the reaction of the heaviest fractions. Nevertheless, there are some differences. In general, ethylene, the direct product of the $beta$-scission of hydrocarbon chains, is the main compound in the gaseous fraction. The yields to methane and hydrogen increase as the temperature rises, with these being the final products of the degradation process and in the formation of aromatics. The production of aromatics and polycyclic aromatic hydrocarbons increases with the temperature and residence time. textcopyright 2006 American Chemical Society.<\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('424','tp_abstract')\">Cerrar<\/a><\/p><\/div><div class=\"tp_links\" id=\"tp_links_424\" style=\"display:none;\"><div class=\"tp_links_entry\"><ul class=\"tp_pub_list\"><li><i class=\"fas fa-globe\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/pubs.acs.org\/sharingguidelines\" title=\"https:\/\/pubs.acs.org\/sharingguidelines\" target=\"_blank\">https:\/\/pubs.acs.org\/sharingguidelines<\/a><\/li><li><i class=\"ai ai-doi\"><\/i><a class=\"tp_pub_list\" href=\"https:\/\/dx.doi.org\/10.1021\/ef060007n\" title=\"DOI de seguimiento:10.1021\/ef060007n\" target=\"_blank\">doi:10.1021\/ef060007n<\/a><\/li><\/ul><\/div><p class=\"tp_close_menu\"><a class=\"tp_close\" onclick=\"teachpress_pub_showhide('424','tp_links')\">Cerrar<\/a><\/p><\/div><\/div><\/div><\/div><div class=\"tablenav\"><div class=\"tablenav-pages\"><span class=\"displaying-num\">8 registros<\/span> <a class=\"page-numbers button disabled\">&laquo;<\/a> <a class=\"page-numbers button disabled\">&lsaquo;<\/a> 1 de 2 <a href=\"https:\/\/gpt.i3a.es\/es\/cesar-gracia\/?limit=2&amp;tgid=&amp;yr=&amp;type=&amp;usr=&amp;auth=&amp;tsr=#tppubs\" title=\"p\u00e1gina siguiente\" class=\"page-numbers button\">&rsaquo;<\/a> <a href=\"https:\/\/gpt.i3a.es\/es\/cesar-gracia\/?limit=2&amp;tgid=&amp;yr=&amp;type=&amp;usr=&amp;auth=&amp;tsr=#tppubs\" title=\"\u00faltima p\u00e1gina\" class=\"page-numbers button\">&raquo;<\/a> <\/div><\/div><\/div>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/div>\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":4767,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[240,239],"tags":[],"class_list":["post-4766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-phd-students-and-visitors","category-team"],"_links":{"self":[{"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/posts\/4766","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/comments?post=4766"}],"version-history":[{"count":3,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/posts\/4766\/revisions"}],"predecessor-version":[{"id":4778,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/posts\/4766\/revisions\/4778"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/media\/4767"}],"wp:attachment":[{"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/media?parent=4766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/categories?post=4766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gpt.i3a.es\/es\/wp-json\/wp\/v2\/tags?post=4766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}