{"id":10305,"date":"2022-01-25T15:18:34","date_gmt":"2022-01-25T14:18:34","guid":{"rendered":"https:\/\/ggba.swiss\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/"},"modified":"2023-07-04T13:43:48","modified_gmt":"2023-07-04T11:43:48","slug":"leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up","status":"publish","type":"post","link":"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/","title":{"rendered":"L\u2019\u00e9ponge qui extrait l\u2019or dans l\u2019eau de l\u2019EPFL Valais deviendra une start-up"},"content":{"rendered":"\n

Bien qu’on puisse trouver de l’or dans un certain nombre de sources diff\u00e9rentes, comme les d\u00e9chets \u00e9lectroniques, l’eau de mer, l’eau douce, les eaux us\u00e9es et les boues d’\u00e9puration, il n’existe actuellement aucun mat\u00e9riau pouvant extraire s\u00e9lectivement l’or de milieux aussi complexes.<\/p>\n

En 2018, le laboratoire du professeur Wendy L. Queen \u00e0 l’EPFL Valais<\/a> a mis au point une \u00ab\u00a0\u00e9ponge\u00a0\u00bb qui permet d’extraire l’or de divers liquides complexes. Le mat\u00e9riau poreux, appel\u00e9 Fe-BTC\/PpPDA, est constitu\u00e9 d’un \u00ab metal\u2013organic framework \u00bb (MOF) et de blocs de construction en polym\u00e8re et poss\u00e8de une tr\u00e8s grande surface interne, ce qui lui permet d’adsorber jusqu’\u00e0 1 gramme d’or par gramme de mat\u00e9riau.<\/p>\n

Aujourd\u2019hui, les recherches autour de cette innovation se poursuivent sur le campus d\u2019Energypolis<\/a> de Sion (canton du Valais).<\/p>\n

\u00ab\u00a0Notre objectif est de transf\u00e9rer cette invention sur le march\u00e9, en lui trouvant des applications industrielles favorisant le recyclage et la r\u00e9utilisation de l\u2019or\u00a0\u00bb, explique Olga Trukhina, chercheuse postdoctorale au Laboratoire des mat\u00e9riaux inorganiques fonctionnels de l\u2019EPFL Valais. Ce composite est notamment destin\u00e9 aux industries actives dans le raffinage de m\u00e9taux pr\u00e9cieux. Il doit leur permettre de capter l\u2019or contenu dans leurs flux de d\u00e9chets liquides \u2013 notamment dans leurs eaux us\u00e9es \u2013 afin de le r\u00e9int\u00e9grer dans leur cycle de production. \u00ab\u00a0L\u2019exploitation mini\u00e8re mondiale est aujourd\u2019hui l\u2019un des principaux responsables des \u00e9missions de carbone. Faciliter l\u2019extraction de l\u2019or \u00e0 partir de flux de d\u00e9chets complexes contribuera \u00e0 r\u00e9duire les \u00e9missions li\u00e9es \u00e0 ce secteur.\u00a0\u00bb<\/p>\n

Un d\u00e9monstrateur pilote et une start-up<\/h4>\n

Les diff\u00e9rents tests r\u00e9alis\u00e9s aupr\u00e8s d\u2019entreprises suisses et \u00e9trang\u00e8res ont mis en \u00e9vidence le fait que lors de son utilisation, l\u2019\u00e9ponge peut parfois \u00eatre soumise \u00e0 des solutions liquides tr\u00e8s acides. Elle doit \u00e9galement \u00eatre capable d\u2019extraire de l\u2019or \u00e0 partir d\u2019\u00e9normes quantit\u00e9s de fer, de cuivre, de nickel, de plomb et d\u2019autres m\u00e9taux lourds.<\/p>\n

\u00ab\u00a0Notre objectif est donc d\u2019adapter ce composite \u00e0 ces diff\u00e9rents param\u00e8tres \u00bb, explique Olga Trukhina. \u00ab\u00a0La prochaine phase du projet consistera \u00e0 cr\u00e9er un d\u00e9monstrateur pilote avec des partenaires industriels. Nous esp\u00e9rons aussi cr\u00e9er une start-up. \u00bb<\/p>\n

La r\u00e9cup\u00e9ration des m\u00e9taux contenus dans les d\u00e9chets \u00e9lectroniques tels que les smartphones et ordinateurs figure aussi parmi les autres potentiels secteurs d\u2019application de cette technologie.<\/p>\n","protected":false},"excerpt":{"rendered":"

L\u2019\u00e9ponge mol\u00e9culaire capable de r\u00e9cup\u00e9rer les r\u00e9sidus d\u2019or contenus dans les eaux us\u00e9es deviendra une start-up lanc\u00e9e sur le campus Energypolis.<\/p>\n","protected":false},"author":3,"featured_media":10306,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[844],"tags":[1038,1059,1082],"class_list":["post-10305","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cleantech","tag-education-fr","tag-materials-fr","tag-technology-park-fr"],"acf":[],"yoast_head":"\nL\u2019\u00e9ponge qui extrait l\u2019or dans l\u2019eau de l\u2019EPFL Valais deviendra une start-up - Greater Geneva Bern area<\/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:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019\u00e9ponge qui extrait l\u2019or dans l\u2019eau de l\u2019EPFL Valais deviendra une start-up - Greater Geneva Bern area\" \/>\n<meta property=\"og:description\" content=\"L\u2019\u00e9ponge mol\u00e9culaire capable de r\u00e9cup\u00e9rer les r\u00e9sidus d\u2019or contenus dans les eaux us\u00e9es deviendra une start-up lanc\u00e9e sur le campus Energypolis.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/\" \/>\n<meta property=\"og:site_name\" content=\"Greater Geneva Bern area\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-25T14:18:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-04T11:43:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/staging.ggba.swiss\/app\/uploads\/2023\/06\/Eponge-Or-EPFL-630x380-1-2.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"630\" \/>\n\t<meta property=\"og:image:height\" content=\"380\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"mathieu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"mathieu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/\"},\"author\":{\"name\":\"mathieu\",\"@id\":\"https:\/\/staging.ggba.swiss\/en\/#\/schema\/person\/de091cdfd7d8bce46f9b8b1cf9d868ab\"},\"headline\":\"L\u2019\u00e9ponge qui extrait l\u2019or dans l\u2019eau de l\u2019EPFL Valais deviendra une start-up\",\"datePublished\":\"2022-01-25T14:18:34+00:00\",\"dateModified\":\"2023-07-04T11:43:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/\"},\"wordCount\":440,\"image\":{\"@id\":\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/ggba.swiss\/app\/uploads\/2023\/06\/Eponge-Or-EPFL-630x380-1-2.jpeg\",\"keywords\":[\"Education\",\"Materials\",\"Technology Park\"],\"articleSection\":[\"Cleantech\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/\",\"url\":\"https:\/\/ggba.swiss\/fr\/leponge-qui-extrait-lor-dans-leau-de-lepfl-valais-deviendra-une-start-up\/\",\"name\":\"L\u2019\u00e9ponge qui extrait l\u2019or dans l\u2019eau de l\u2019EPFL Valais deviendra une start-up - 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