{"id":12428,"date":"2022-01-01T17:55:27","date_gmt":"2022-01-01T17:55:27","guid":{"rendered":"https:\/\/lequia-udg.com\/2022\/01\/01\/roadmap-for-scaling-up-thermophilic-co2-bioreduction-to-acetate-shedding-light-on-using-surplus-renewable-energy-and-industrial-off-gases\/"},"modified":"2024-05-29T14:26:06","modified_gmt":"2024-05-29T14:26:06","slug":"roadmap-for-scaling-up-thermophilic-co2-bioreduction-to-acetate-shedding-light-on-using-surplus-renewable-energy-and-industrial-off-gases","status":"publish","type":"post","link":"https:\/\/lequia-udg.com\/ca\/2022\/01\/01\/roadmap-for-scaling-up-thermophilic-co2-bioreduction-to-acetate-shedding-light-on-using-surplus-renewable-energy-and-industrial-off-gases\/","title":{"rendered":"Roadmap for scaling up thermophilic CO2 bioreduction to acetate: shedding light on using surplus renewable energy and industrial off-gases"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"12428\" class=\"elementor elementor-12428 elementor-3050\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1aff2b7f ts-col-stretched-none ts-bg-color-over-image elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1aff2b7f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-18fc5d71 ts-bg-color-over-image\" data-id=\"18fc5d71\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4777d769 ts-align-left elementor-widget elementor-widget-ts_heading\" data-id=\"4777d769\" data-element_type=\"widget\" data-widget_type=\"ts_heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t<div class=\"ts-heading-subheading ts-reverse-heading-yes animation-style4\"><h4 class=\"ts-custom-heading ts-custom-subtitle\">\r\n\t\t\t\r\n\t\t\t\tAuthor: Laura Rovira Alsina                                                                                                         \r\n\t\t\t\r\n\t\t\t<\/h4>\r\n\t\t<h2 class=\"ts-custom-heading ts-custom-heading-title\">\r\n\t\t\t\r\n\t\t\t\tRoadmap for scaling up thermophilic CO2 bioreduction to acetate: shedding light on using surplus renewable energy and industrial off-gases\r\n\t\t\t\r\n\t\t\t<\/h2>\r\n\t\t<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1afb0115 ts-col-stretched-none ts-bg-color-over-image elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1afb0115\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1b207e1a ts-bg-color-over-image\" data-id=\"1b207e1a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3b9875b1 elementor-widget elementor-widget-text-editor\" data-id=\"3b9875b1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>El\u00a0<strong>di\u00f2xid de carboni (CO<sub>2<\/sub>)\u00a0<\/strong>\u00e9s un compost inorg\u00e0nic que es troba de manera natural a l\u2019atmosfera terrestre. D\u2019en\u00e7\u00e0 de la revoluci\u00f3 industrial, per\u00f2, la crema de combustibles f\u00f2ssils, la generaci\u00f3 d\u2019electricitat i altres processos industrials n\u2019han augmentat la concentraci\u00f3 de manera exponencial, provocant l&#8217;actual acceleraci\u00f3 de l&#8217;escalfament global. Entre les diverses tecnologies que s\u2019han proposat per capturar el CO<sub>2<\/sub>\u00a0i convertir-lo en un producte valu\u00f3s destaca l\u2019<strong>electro-s\u00edntesi microbiana (<\/strong>en angl\u00e8s,<em>\u00a0microbial electro-synthesis<\/em>\u00a0o\u00a0<strong>MES)<\/strong>. A difer\u00e8ncia d\u2019altres tecnologies que utilitzen materials cars i\/o escassos per a catalitzar la reducci\u00f3 del CO<sub>2<\/sub>, la MES empra microorganismes electro-actius. Tot i aix\u00ed, si b\u00e9 s\u2019han obtingut resultats satisfactoris al laboratori, actualment la comercialitzaci\u00f3 encara no \u00e9s viable.<\/p>\n<p>&nbsp;<\/p>\n<p>La tesi doctoral de\u00a0<strong>Laura Rovira Alsina<\/strong>\u00a0aborda els reptes de l\u2019escalatge industrial de l\u2019electros\u00edntesi microbiana d\u2019<strong>acetat<\/strong>\u00a0(HA) a partir de CO<sub>2<\/sub>. La investigadora va treballar amb emissions de gasos industrials reals, va emprar un cultiu microbi\u00e0 mixt capa\u00e7 de suportar altes temperatures i va obtenir l\u2019energia necess\u00e0ria de fonts renovables. Els resultats principals en cadascun d\u2019aquests tres par\u00e0metres s\u00f3n els seg\u00fcents:<\/p>\n<ul>\n<li>Tenint en compte que el sector industrial emet CO\u2082 a altes temperatures, tots els experiments es van realitzar en\u00a0<strong>condicions term\u00f2files<\/strong>\u00a0(50 \u00b0C), fet que va millorar la cin\u00e8tica de les reaccions, aix\u00ed com la selectivitat del producte final.<\/li>\n<li>Per a abordar un dels principals reptes de la tecnologia relacionat amb la utilitzaci\u00f3 de l&#8217;electricitat com a principal cost operatiu, es va considerar l&#8217;\u00fas d&#8217;<strong>energia renovable<\/strong>, i es va simular el funcionament nom\u00e9s amb l&#8217;<strong>excedent<\/strong>\u00a0sense emmagatzematge en bateries, donant lloc a un subministrament d&#8217;energia intermitent. Aix\u00f2 va reduir per tres el consum d&#8217;energia i va promoure la combinaci\u00f3 de processos bioelectroqu\u00edmics i de fermentaci\u00f3 microbiana, aconseguint una producci\u00f3 cont\u00ednua d\u2019acetat (43 g m<sup>-2<\/sup>\u00a0d<sup>-1<\/sup>) i unes taxes de conversi\u00f3 de carboni prometedores (2,2 kg CO<sub>2<\/sub>\u00a0kg HA<sup>-1<\/sup>). En quant a la intensificaci\u00f3 del proc\u00e9s, es va desenvolupar un\u00a0<strong>model termodin\u00e0mic<\/strong>\u00a0que va permetre determinar les condicions d&#8217;operaci\u00f3 m\u00e9s favorables en funci\u00f3 del producte final desitjat. L&#8217;an\u00e0lisi dels resultats va mostrar que, en condicions term\u00f2files, l&#8217;elongaci\u00f3 d\u2019acetat a carboxilats de cadena m\u00e9s llarga no era espont\u00e0nia, per la qual cosa la seva conversi\u00f3 en successius passos de fermentaci\u00f3 anaer\u00f2bica en condicions mes\u00f2files va resultar ser l&#8217;opci\u00f3 m\u00e9s viable.<\/li>\n<li>Per tal de que la tecnologia estigui un pas m\u00e9s prop de la seva aplicaci\u00f3 comercial, els sistemes es van provar amb\u00a0<strong>gasos industrials reals\u00a0<\/strong>que contenien impureses i un percentatge menor de CO\u2082 (del 100 al 14 %). La comunitat microbiana mixta va demostrar ser prou robusta com per a mantenir productivitats similars a l&#8217;operaci\u00f3 amb gas sint\u00e8tic (2,5 % de difer\u00e8ncia) i adaptar-se a les noves condicions, desenvolupant sin\u00e8rgies per a mitigar els impactes derivats de l&#8217;\u00fas de gas real amb pres\u00e8ncia d&#8217;un 12 % d&#8217;oxigen (O<sub>2<\/sub>).<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Tots aquests coneixements van permetre dissenyar, construir i posar en marxa la\u00a0<strong>primera planta pilot<\/strong>\u00a0<strong>d\u2019electros\u00edntesis microbiana a partir de CO\u2082 amb monitoratge i control digital\u00a0<\/strong>de les principals variables operacionals. Aix\u00f2 va permetre definir rangs de control amb diferents nivells de variabilitat i obtenir accions de senyal-resposta immediates per al correcte \u00fas i aprofitament dels recursos, aconseguint la millor relaci\u00f3 producte\/energia obtinguda fins al moment (483 g d\u2019acetat kWh<sup>-1<\/sup>). Una fita que acosta de manera significativa la tecnologia al mercat, per\u00f2 que encara deixa alguns reptes importants per resoldre com ara l\u2019obtenci\u00f3 d\u2019el\u00e8ctrodes amb materials biocompatibles, barats i eficients, i les restriccions que limiten les taxes de producci\u00f3.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-408d985a ts-col-stretched-none ts-bg-color-over-image elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"408d985a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7bc0c48b ts-bg-color-over-image\" data-id=\"7bc0c48b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-27cb9e23 elementor-widget elementor-widget-accordion\" data-id=\"27cb9e23\" data-element_type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-6671\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-6671\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"fas fa-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"fas fa-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Informaci\u00f3 addicional<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-6671\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-6671\"><table style=\"border: hidden;\">\n<tbody>\n<tr style=\"border-bottom: 1px solid #efefef;\">\n<td align=\"right\" width=\"200\"><strong>Autor:<\/strong><\/td>\n<td>Laura Rovira Alsina<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #efefef;\">\n<td align=\"right\" width=\"200\"><strong>Supervisor:<\/strong><\/td>\n<td>Dr Maria Dolors Balaguer and Dr Sebasti\u00e0 Puig<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #efefef;\">\n<td align=\"right\" width=\"200\"><strong>Any:<\/strong><\/td>\n<td>2022<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #efefef;\">\n<td align=\"right\" width=\"200\"><strong>Universitat:<\/strong><\/td>\n<td>Universitat de Girona<\/td>\n<\/tr>\n<tr style=\"border-bottom: 1px solid #efefef;\">\n<td align=\"right\" width=\"200\"><strong>Enlla&ccedil;:<\/strong><\/td>\n<td>http:\/\/hdl.handle.net\/10803\/687916<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-31292653 elementor-widget elementor-widget-spacer\" data-id=\"31292653\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Author: Laura Rovira Alsina Roadmap for scaling up thermophilic CO2 bioreduction to acetate: shedding light on using surplus renewable energy and industrial off-gases El\u00a0di\u00f2xid de carboni (CO2)\u00a0\u00e9s un compost inorg\u00e0nic que es troba de manera natural a l\u2019atmosfera terrestre. D\u2019en\u00e7\u00e0 de la revoluci\u00f3 industrial, per\u00f2, la crema de combustibles f\u00f2ssils, la generaci\u00f3 d\u2019electricitat i altres &hellip; <a href=\"https:\/\/lequia-udg.com\/ca\/2022\/01\/01\/roadmap-for-scaling-up-thermophilic-co2-bioreduction-to-acetate-shedding-light-on-using-surplus-renewable-energy-and-industrial-off-gases\/\" class=\"more-link\" title=\"Continue reading <span class=\"screen-reader-text\">Roadmap for scaling up thermophilic CO2 bioreduction to acetate: shedding light on using surplus renewable energy and industrial off-gases<\/span>&#8220;>Continue reading <span class=\"screen-reader-text\">Roadmap for scaling up thermophilic CO2 bioreduction to acetate: shedding light on using surplus renewable energy and industrial off-gases<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-12428","post","type-post","status-publish","format-standard","hentry","category-doctoral-theses_ca"],"_links":{"self":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12428","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/comments?post=12428"}],"version-history":[{"count":1,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12428\/revisions"}],"predecessor-version":[{"id":12429,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/posts\/12428\/revisions\/12429"}],"wp:attachment":[{"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/media?parent=12428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/categories?post=12428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lequia-udg.com\/ca\/wp-json\/wp\/v2\/tags?post=12428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}