{"id":5360,"date":"2023-10-07T18:49:32","date_gmt":"2023-10-07T16:49:32","guid":{"rendered":"https:\/\/webs.uab.cat\/gicom\/?page_id=5360"},"modified":"2025-03-04T15:23:25","modified_gmt":"2025-03-04T13:23:25","slug":"squeezer","status":"publish","type":"page","link":"https:\/\/webs.uab.cat\/gicom\/squeezer\/","title":{"rendered":"Squeezer"},"content":{"rendered":"\n<p>El projecte &#8220;<em>Nanomaterials per a la millora de la digesti\u00f3 anaer\u00f2bia: incrementant el contingut en met\u00e0 i convertint di\u00f2xid de carboni a metanol &#8211; SQUEEZER<\/em>  &#8211; TED2021-130407B-100 &#8221; subvencionat en la convocat\u00f2ria 2021 &#8211;<strong>Proyectos estrat\u00e9gicos orientados transici\u00f3n ecol\u00f3gica y transici\u00f3n digital 2021 Digital del Ministerio de Ciencia e Innovaci\u00f3n<\/strong>, uneix dos mons aparentment desconnectats, el del tractament de residus mitjan\u00e7ant processos biol\u00f2gics i el de la nanotecnologia. La hip\u00f2tesi del projecte SQUEEZER \u00e9s que \u00e9s possible millorar el proc\u00e9s de digesti\u00f3 anaer\u00f2bia des d&#8217;una perspectiva global: i) augmentant el contingut de met\u00e0 del biog\u00e0s mitjan\u00e7ant l&#8217;addici\u00f3 de nanomaterials al digestor anaer\u00f2bi i ii) convertint part del di\u00f2xid de carboni present en el biog\u00e0s a metanol mitjan\u00e7ant cat\u00e0lisi amb nanomaterials.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer-1024x680.jpg\" alt=\"Esquema del proyecto Squeezer\" class=\"wp-image-5361\" srcset=\"https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer-1024x680.jpg 1024w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer-300x199.jpg 300w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer-768x510.jpg 768w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer-1536x1019.jpg 1536w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer-1200x796.jpg 1200w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/Squeezer.jpg 1695w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Esquema del proyecto Squeezer<\/figcaption><\/figure>\n\n\n\n<p>L&#8217;efecte de les nanopart\u00edcules met\u00e0l\u00b7liques sobre la digesti\u00f3 anaer\u00f2bia s&#8217;est\u00e0 estudiant des de fa uns anys en diferents grups de recerca. Concretament, el nostre grup de recerca (paral\u00b7lelament a un altre grup de recerca) va informar per primera vegada el 2014 d&#8217;una millora del proc\u00e9s de digesti\u00f3 anaer\u00f2bia de residus org\u00e0nics mitjan\u00e7ant l&#8217;addici\u00f3 de nanopart\u00edcules d&#8217;\u00f2xid de ferro. Des de llavors, s&#8217;han utilitzat diferents tipus de nanomaterials per millorar el proc\u00e9s de digesti\u00f3 anaer\u00f2bia. A m\u00e9s de les nanopart\u00edcules basades en ferro, altres tamb\u00e9 han reportat efectes positius, com ara nanopart\u00edcules basades en cobalt, \u00f2xid de titani, \u00f2xid de molibd\u00e8 o n\u00edquel. Com s&#8217;ha comentat, a m\u00e9s d&#8217;augmentar la producci\u00f3 de biog\u00e0s o el seu contingut en met\u00e0, el proc\u00e9s global de digesti\u00f3 anaer\u00f2bia tamb\u00e9 es pot millorar mitjan\u00e7ant la conversi\u00f3 de di\u00f2xid de carboni del biog\u00e0s en metanol. El metanol t\u00e9 caracter\u00edstiques similars a l&#8217;hidrogen, per\u00f2 \u00e9s l\u00edquid en condicions normals, per la qual cosa \u00e9s una bona alternativa. La gesti\u00f3 del metanol \u00e9s an\u00e0loga als combustibles l\u00edquids tradicionals com la gasolina i es pot utilitzar com a font d&#8217;energia per al transport o com a mol\u00e8cula de plataforma per produir compostos de valor afegit. La conversi\u00f3 de di\u00f2xid de carboni a metanol \u00e9s coneguda, per\u00f2 es realitza en condicions d&#8217;elevada temperatura i pressi\u00f3. L&#8217;objectiu del projecte SQUEEZER \u00e9s aconseguir aquesta conversi\u00f3 a temperatures i pressions m\u00e9s baixes mitjan\u00e7ant l&#8217;\u00fas de nanomaterials.<\/p>\n\n\n\n<p><strong>Principals resultats en la millora del proc\u00e9s biol\u00f2gic de la de digesti\u00f3 anaer\u00f2bia<\/strong><\/p>\n\n\n\n<p>En proc\u00e9s en discontinu a escala de 250 mL s&#8217;ha obtingut els resultats seg\u00fcents per a la digesti\u00f3 anaerobia de fangs d&#8217;EDAR com a substrat:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Nanopart\u00edcula<\/strong><\/td><td><strong>Proc\u00e9s<\/strong><\/td><td><strong>Millora<\/strong><\/td><\/tr><tr><td>nVZI en suspensi\u00f3<\/td><td>Discontinu<\/td><td>16% en el contingut de CH4, producci\u00f3 de met\u00e0 de fins el 150% del control sense nZVI<\/td><\/tr><tr><td>nZVI@Quitosan<\/td><td>Discontinu<\/td><td>Cap millora significativa<\/td><\/tr><tr><td>N\u00edquel<\/td><td>Discontinu<\/td><td>No es detecta cap millora<\/td><\/tr><tr><td>Cobalt<\/td><td>Discontinu<\/td><td>No es detecta cap millora<\/td><\/tr><tr><td>Quitosan<\/td><td>Discontinu<\/td><td>Cap millora significativa<\/td><\/tr><tr><td>Ni@Quitosan<\/td><td>Discontinu<\/td><td>Cap millora significativa<\/td><\/tr><tr><td>Co@Quitosan<\/td><td>Discontinu<\/td><td>Cap millora significativa<\/td><\/tr><tr><td>nZVi liofilitzades<\/td><td>Discontinu<\/td><td>Cap millora significativa<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Estudiant l&#8217;efecte sobre la digesti\u00f3 anaer\u00f2bia de fracci\u00f3 org\u00e0nica de residus municipals, no s&#8217;ha observat millores destacables-<\/p>\n\n\n\n<p>Pels estudis en continu, amb fangs d&#8217;EDAR, s&#8217;ha utilitzar un digestor <em>BioReactor Simulator (BRS) system, BPC Instruments<\/em>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores-1024x576.jpg\" alt=\"Bateria de Digestores anaerobios\" class=\"wp-image-5366\" style=\"width:700px;height:393px\" srcset=\"https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores-1024x576.jpg 1024w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores-300x169.jpg 300w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores-768x432.jpg 768w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores-1536x864.jpg 1536w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores-1200x675.jpg 1200w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactores.jpg 1599w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Bateria de Digestors anaerobis<\/figcaption><\/figure>\n\n\n\n<p>Dels 6 digestors de 2L, dos d&#8217;ells s&#8217;han mantingut sempre com a controls, i els altres 4 s&#8217;han tractat amb nanopart\u00edcules a diferents concentracions i modes de dosificaci\u00f3. Els resultats obtinguts en assajos en semi- continu mostren que no hi ha difer\u00e8ncia estad\u00edstica entre l&#8217;addici\u00f3 setmanal o di\u00e0ria (mateixa quantitat total). Durant els experiments realitzats s&#8217;ha detectat una influ\u00e8ncia important de la c\u00e0rrega org\u00e0nica d&#8217;operaci\u00f3 sobre l&#8217;efecte de les nZVI, de manera que la concentraci\u00f3 de met\u00e0 en el biog\u00e0s augmenta en baixar la c\u00e0rrega org\u00e0nica i en augmentar la concentraci\u00f3 de nZVI (1 g\/L nZVI, 0.8 g SV\/ L dia). En canvi, la producci\u00f3 de biogues i de met\u00e0 augmenten en augmentar la c\u00e0rrega org\u00e0nica, obtenint-se els millors resultats a c\u00e0rregues de 1.6 g SV\/ L dia i 0.3 o 0.7 g de nZVI\/L, amb valors d&#8217;increment del 3.7% en la producci\u00f3 de biog\u00e0s i de 7.8% en la producci\u00f3 de met\u00e0.<\/p>\n\n\n\n<p>A banda dels experiments a 2L, s&#8217;ha dut a terme un estudi en un digestor anaerobi de 100L, obtenint-se resultats similars als obtinguts en els digestors de 2L.<\/p>\n\n\n\n<p><strong>Principals resultats en la conversi\u00f3 de di\u00f2xid de carboni a metanol<\/strong><\/p>\n\n\n\n<p>Els resultats principals obtinguts del proc\u00e9s de cat\u00e0lisi qu\u00edmica de CO2 a metanol es mostren a la taula seg\u00fcent:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Nanomaterial<\/strong><\/td><td><strong>Resultats<\/strong><\/td><\/tr><tr><td>CuO\/ZnO\/Al<sub>2<\/sub>O<sub>3<\/sub>@chitosan <\/td><td>productivitats de 92,44 mg de Metanol\/g catalitzador h, amb una selectivitat superior al 90% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar (<a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1566736723001498\" data-type=\"URL\" data-id=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S1566736723001498\" target=\"_blank\" rel=\"noreferrer noopener\">+<\/a>)<\/td><\/tr><tr><td>CuZnO<\/td><td>productivitats de 14,4 mg de Metanol\/g catalitzador h, amb una selectivitat del 76% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>CuZnOCeO<sub>2<\/sub><\/td><td>productivitats de 15,1 mg de Metanol\/g catalitzador h, amb una selectivitat del 71% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>CuZnOCeO<sub>2<\/sub>@Ce-MOF<\/td><td>productivitats de 21,3 mg de Metanol\/g catalitzador h, amb una selectivitat del 52% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>CuZnOCeO<sub>2<\/sub>@MOF-5<\/td><td>productivitats de 23,3 mg de Metanol\/g catalitzador h, amb una selectivitat del 79% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>CuZnOCeO<sub>\u00ad2<\/sub>@ZIF-8C<\/td><td>productivitats de 15,9 mg de Metanol\/g catalitzador h, amb una selectivitat del 61% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>Ce-MOF<\/td><td>productivitats de 0,7 mg de Metanol\/g catalitzador h, amb una selectivitat del 90% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>MOF-5<\/td><td>productivitats de 1,4 mg de Metanol\/g catalitzador h, amb una selectivitat del 93% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>Cu\/ZnO\/Al2O3@biochar<\/td><td>productivitats de 496 mg de Metanol\/g catalitzador h, amb una selectivitat del 71% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><tr><td>Cu\/ZnO\/Al2O3@MGPN<\/td><td>productivitats de 145 mg de Metanol\/g catalitzador h, amb una selectivitat del 98% a una temperatura de 260\u00b0C y una pressi\u00f3 10 bar<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"574\" src=\"https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-1024x574.jpg\" alt=\"Imatge del Reactor catal\u00edtic\" class=\"wp-image-5382\" srcset=\"https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-1024x574.jpg 1024w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-300x168.jpg 300w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-768x431.jpg 768w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-1536x861.jpg 1536w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-2048x1148.jpg 2048w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-1200x673.jpg 1200w, https:\/\/webs.uab.cat\/gicom\/wp-content\/uploads\/sites\/206\/2023\/10\/reactor-catalitic-1980x1110.jpg 1980w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Reactor catal\u00edtic<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>El projecte &#8220;Nanomaterials per a la millora de la digesti\u00f3 anaer\u00f2bia: incrementant el contingut en met\u00e0 i convertint di\u00f2xid de carboni a metanol &#8211; SQUEEZER &#8211; TED2021-130407B-100 &#8221; subvencionat en la convocat\u00f2ria 2021 &#8211;Proyectos estrat\u00e9gicos orientados transici\u00f3n ecol\u00f3gica y transici\u00f3n digital 2021 Digital del Ministerio de Ciencia e Innovaci\u00f3n, uneix dos mons aparentment desconnectats, el [&hellip;]<\/p>\n","protected":false},"author":153,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5360","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Squeezer - Grup de Recerca en Compostatge<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/webs.uab.cat\/gicom\/squeezer\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Squeezer - Grup de Recerca en Compostatge\" \/>\n<meta property=\"og:description\" content=\"El projecte &#8220;Nanomaterials per a la millora de la digesti\u00f3 anaer\u00f2bia: incrementant el contingut en met\u00e0 i convertint di\u00f2xid de carboni a metanol &#8211; 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