{"id":145570,"date":"2025-12-11T12:20:00","date_gmt":"2025-12-11T11:20:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/?p=145570"},"modified":"2025-12-10T08:47:35","modified_gmt":"2025-12-10T07:47:35","slug":"elektrochemischer-durchbruch-im-kampf-gegen-altlasten","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/elektrochemischer-durchbruch-im-kampf-gegen-altlasten\/","title":{"rendered":"Perc\u00e9e \u00e9lectrochimique dans la lutte contre les sites contamin\u00e9s"},"content":{"rendered":"<p class=\"bodytext\">Selon un <a href=\"https:\/\/ethz.ch\/de\/news-und-veranstaltungen\/eth-news\/news\/2025\/11\/elektrolyse-loest-eines-der-groessten-altlastenprobleme.html\" target=\"_blank\" rel=\"noopener\">communiqu\u00e9<\/a>, des chercheurs de l&rsquo;Ecole polytechnique f\u00e9d\u00e9rale de Zurich<a href=\"https:\/\/ethz.ch\/de.html\" target=\"_blank\" rel=\"noopener\">(EPFZ<\/a>) ont r\u00e9ussi une perc\u00e9e dans la d\u00e9pollution de sites contamin\u00e9s par des polluants tels que le DDT et le lindane. Il s&rsquo;agit de polluants organiques persistants, appel\u00e9s POP. Il s&rsquo;agit de produits chimiques toxiques qui ont \u00e9t\u00e9 largement utilis\u00e9s dans les ann\u00e9es 40 \u00e0 80 du si\u00e8cle dernier. Ils ne se d\u00e9gradent que tr\u00e8s lentement et se retrouvent aujourd&rsquo;hui dans la cha\u00eene alimentaire humaine et animale. L&rsquo;\u00e9quipe universitaire dirig\u00e9e par Bill Morandi, professeur de chimie organique synth\u00e9tique, vient de mettre au point un nouveau proc\u00e9d\u00e9 \u00e9lectrochimique qui d\u00e9shalog\u00e8ne compl\u00e8tement ces polluants environnementaux et les lie en un sel inoffensif. Les hydrocarbures organiques restants peuvent \u00eatre int\u00e9gr\u00e9s dans l&rsquo;\u00e9conomie circulaire et servir ainsi de mati\u00e8res premi\u00e8res pr\u00e9cieuses pour l&rsquo;industrie chimique.<\/p>\n<p class=\"bodytext\">\u00ab\u00a0Nous voulions r\u00e9soudre l&rsquo;un des plus grands probl\u00e8mes environnementaux du si\u00e8cle dernier. Il n&rsquo;est pas question de laisser la salet\u00e9 aux g\u00e9n\u00e9rations futures\u00a0\u00bb, d\u00e9clare Alberto Garrido-Castro, sp\u00e9cialiste en \u00e9lectrochimie et ancien post-doctorant du groupe, cit\u00e9 dans le communiqu\u00e9. L&rsquo;\u00e9quipe de l&rsquo;EPFZ consid\u00e8re en effet que l&rsquo;assainissement de telles pollutions anciennes dans les sols, les eaux et les d\u00e9charges est l&rsquo;une des grandes questions en suspens de la protection de l&rsquo;environnement. La d\u00e9gradation de ces produits chimiques par des proc\u00e9d\u00e9s \u00e9lectrochimiques est \u00e9tudi\u00e9e depuis longtemps d\u00e9j\u00e0. Selon le communiqu\u00e9, les chercheurs de l&rsquo;EPFZ ont maintenant r\u00e9ussi une perc\u00e9e d\u00e9cisive en utilisant le courant alternatif pour l&rsquo;\u00e9lectrolyse. \u00ab\u00a0Elle d\u00e9compose les atomes d&rsquo;halog\u00e8ne en sels inoffensifs comme le NaCl (sel de cuisine) et produit en m\u00eame temps des hydrocarbures pr\u00e9cieux\u00a0\u00bb, explique M. Morandi. Les hydrocarbures en question sont le benz\u00e8ne, le diph\u00e9nyl\u00e9thane ou le cyclodod\u00e9catri\u00e8ne. Des produits chimiques qui sont utilis\u00e9s pour la fabrication de plastiques, de peintures ou de rev\u00eatements et qui servent donc \u00e0 une \u00e9conomie circulaire durable.<\/p>\n<p class=\"bodytext\">Une condition importante pour la mise en \u0153uvre : le nouveau proc\u00e9d\u00e9 peut \u00eatre appliqu\u00e9 non seulement aux substances pures, mais aussi aux m\u00e9langes de sols contamin\u00e9s, de terre ou de boue. Les chercheurs pensent \u00e0 des installations mobiles qui pourraient \u00eatre utilis\u00e9es sur place, ce qui \u00e9viterait le transport de ces substances dangereuses. Un prototype a d\u00e9j\u00e0 \u00e9t\u00e9 test\u00e9 avec succ\u00e8s.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs de l&rsquo;\u00c9cole polytechnique f\u00e9d\u00e9rale de Zurich (EPFZ) ont mis au point un proc\u00e9d\u00e9 \u00e9lectrochimique qui transforme les polluants environnementaux tels que le DDT et le lindane en produits chimiques industriels de valeur. Cette technologie permet d&rsquo;assainir sur place des d\u00e9charges ou des sols ainsi contamin\u00e9s.<\/p>\n","protected":false},"author":2,"featured_media":145571,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[8747,743,739,8452,22438],"tags":[54048,55760,872,3931,19419,2002],"class_list":["post-145570","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energie","category-immonews-fr","category-projects","category-regions","category-trends-fr","tag-altlastensanierung-fr","tag-elektrochemie","tag-immoinvest-fr","tag-immonews-fr","tag-kreislaufwirtschaft-fr","tag-news-fr"],"acf":{"bild_mit_ki_erstellt_worden":["Ja"],"lead":"Des chercheurs de l'\u00c9cole polytechnique f\u00e9d\u00e9rale de Zurich (EPFZ) ont mis au point un proc\u00e9d\u00e9 \u00e9lectrochimique qui transforme les polluants environnementaux tels que le DDT et le lindane en produits chimiques industriels de valeur. Cette technologie permet d'assainir sur place des d\u00e9charges ou des sols ainsi contamin\u00e9s.","autor":"ce\/eb","ort":"Z\u00fcrich","bildunterschrift":"","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"Des chercheurs de l&#039;\u00c9cole polytechnique f\u00e9d\u00e9rale de Zurich (EPFZ) ont mis au point un proc\u00e9d\u00e9 \u00e9lectrochimique qui transforme les polluants environnementaux tels que le DDT et le lindane en produits chimiques industriels de valeur. 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