{"id":7470,"date":"2021-05-31T13:18:45","date_gmt":"2021-05-31T17:18:45","guid":{"rendered":"https:\/\/cieau.org\/articles\/lutilisation-de-plantes-pour-filtrer-les-eaux-souterraines\/"},"modified":"2021-05-31T13:18:45","modified_gmt":"2021-05-31T17:18:45","slug":"lutilisation-de-plantes-pour-filtrer-les-eaux-souterraines","status":"publish","type":"post","link":"https:\/\/www.cieau.org\/en\/articles\/lutilisation-de-plantes-pour-filtrer-les-eaux-souterraines\/","title":{"rendered":"L\u2019utilisation de plantes pour filtrer les eaux souterraines"},"content":{"rendered":"<p>La nature regorge de richesses \u00e9tonnantes. Cependant, certains m\u00e9taux lourds y sont rel\u00e2ch\u00e9s et infiltrent les sols et les cours d\u2019eau, ce qui entra\u00eene une contamination sans \u00e9gal de nos ressources. La scientifique Claude Grison, directrice du laboratoire de chimie bio-inspir\u00e9e et d\u2019innovations \u00e9cologiques (ChimEco) de l\u2019Universit\u00e9 de Montpellier en France, a fait une d\u00e9couverte fascinante. Les recherches de son laboratoire pr\u00e9sentent des plantes qui seraient pour certaines si puissantes qu\u2019elles nettoieraient les sols des polluants. Pourraient-elles faire de m\u00eame avec la ressource eau?<\/p>\n<h2>Les plantes s\u2019abreuvent des m\u00e9taux et des polluants dangereux<\/h2>\n<p>Certaines esp\u00e8ces de v\u00e9g\u00e9taux se nourrissent des m\u00e9taux lourds dont les sols sont charg\u00e9s. Elles absorbent ces propri\u00e9t\u00e9s et lib\u00e8rent la terre de ses polluants. L\u2019\u00e9quipe de Claude Grison a r\u00e9alis\u00e9 ce ph\u00e9nom\u00e8ne sur le terrain d\u2019une ancienne mine en France dont le sol est contamin\u00e9 \u00e0 une concentration tr\u00e8s \u00e9lev\u00e9e de zinc, de plomb et de cadmium selon l\u2019article Environnement\u00a0: Des plantes absorbent les m\u00e9taux lourds dans les sols d\u2019anciennes mines du magazine Ouest-France (1).<\/p>\n<p>Non seulement la pousse de ce type de plante dans un tel environnement s\u2019av\u00e8re impressionnante, mais les capacit\u00e9s des v\u00e9g\u00e9taux \u00e0 emmagasiner et \u00e0 r\u00e9cup\u00e9rer les compos\u00e9s chimiques sont d\u2019autant plus utiles que remarquables. Deux esp\u00e8ces de plantes favoriseraient la d\u00e9contamination des ressources. Il s\u2019agit de la Noccaea caerulescens autrement nomm\u00e9e le tabouret des bois et l\u2019anthyllide vuln\u00e9raire.<\/p>\n<figure id=\"attachment_4765\" aria-describedby=\"caption-attachment-4765\" style=\"width: 300px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Gebirgs-Hellerkraut.jpg\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-6256 size-medium\" src=\"https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/Noccaea-caerulescens-Tabouret-des-bois_Credit-Konrad-Lackerbeck-et-lien-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/Noccaea-caerulescens-Tabouret-des-bois_Credit-Konrad-Lackerbeck-et-lien-300x225.jpg 300w, https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/Noccaea-caerulescens-Tabouret-des-bois_Credit-Konrad-Lackerbeck-et-lien-768x576.jpg 768w, https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/Noccaea-caerulescens-Tabouret-des-bois_Credit-Konrad-Lackerbeck-et-lien.jpg 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><figcaption id=\"caption-attachment-4765\" class=\"wp-caption-text\">Tabouret des bois. Cr\u00e9dit: Konrad Lackerbeck<\/figcaption><\/figure>\n<figure id=\"attachment_4766\" aria-describedby=\"caption-attachment-4766\" style=\"width: 225px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Vall%C3%A9e_du_Marcadau_83.JPG\"><img decoding=\"async\" class=\"wp-image-6257 size-medium\" src=\"https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/anthyllide-vulneraire_Credit-Nicolas-Guerin-et-lien-225x300.jpg\" alt=\"\" width=\"225\" height=\"300\" srcset=\"https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/anthyllide-vulneraire_Credit-Nicolas-Guerin-et-lien-225x300.jpg 225w, https:\/\/www.cieau.org\/wp-content\/uploads\/2021\/11\/anthyllide-vulneraire_Credit-Nicolas-Guerin-et-lien.jpg 450w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/a><figcaption id=\"caption-attachment-4766\" class=\"wp-caption-text\">Anthyllide vuln\u00e9raire. Cr\u00e9dit: Nicolas Guay<\/figcaption><\/figure>\n<h2><strong>Des r\u00e9sultats satisfaisants pour la culture et la production de masse<\/strong><\/h2>\n<p>Les deux plantes en question absorbent le zinc et le cadmium. Toutefois, l\u2019anthyllide vuln\u00e9raire r\u00e9cup\u00e8re \u00e9galement le plomb.<\/p>\n<p>L\u2019exploitation de ces v\u00e9g\u00e9taux a non seulement permis de d\u00e9contaminer les sols d\u2019anciennes mines, mais aussi de cultiver sans pesticides en pi\u00e9geant les herbicides des pousses d\u2019ananas ou encore en produisant du miel sans compos\u00e9 polluant!<\/p>\n<h2><strong>Une avanc\u00e9e prometteuse pour le traitement de l\u2019eau<\/strong><\/h2>\n<p>Imaginez maintenant que la plante qui permet de retirer les trois polluants soit utilis\u00e9e afin de traiter une source d\u2019eau contamin\u00e9e. Cette technique rappellerait celle des jardins de pluie install\u00e9s dans les grandes routes municipales. Un traitement de l\u2019eau y est effectu\u00e9 \u00e0 l\u2019aide de la v\u00e9g\u00e9tation. Toutefois, la d\u00e9contamination d\u2019eau d\u00e9j\u00e0 fortement pollu\u00e9e serait une avenue nouvelle et innovante qui permettrait de r\u00e9cup\u00e9rer chaque \u00e9l\u00e9ment des sols.<\/p>\n<p>Il est donc possible de pr\u00e9voir l\u2019utilisation de ce v\u00e9g\u00e9tal dans les stations d\u2019eau souterraines. Une m\u00e9thode qui permettrait le traitement de l\u2019eau de fa\u00e7on naturelle et b\u00e9n\u00e9fique pour l\u2019environnement!<\/p>\n<p>Il serait int\u00e9ressant d\u2019observer des technologies r\u00e9pondant \u00e0 cette d\u00e9couverte scientifique ! Toutefois, l\u2019aspect le plus emballant \u00e0 observer demeure l\u2019av\u00e8nement de vastes jardins souterrains destin\u00e9s \u00e0 r\u00e9cup\u00e9rer l\u2019eau douce pour l\u2019approvisionnement de la population.<\/p>\n<h2><strong>Sources<\/strong><\/h2>\n<p>(1) Environnement. Des plantes aspirent les m\u00e9taux lourds dans d\u2019anciennes mines. (2021, 4 janvier). Ouest France. Lien: <a href=\"https:\/\/www.ouest-france.fr\/environnement\/ecologie\/environnement-des-plantes-aspirent-les-metaux-lourds-dans-d-anciennes-mines-7107055%C2%A0\">https:\/\/www.ouest-france.fr\/environnement\/ecologie\/environnement-des-plantes-aspirent-les-metaux-lourds-dans-d-anciennes-mines-7107055%C2%A0\u00a0<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Certains m\u00e9taux lourds sont rel\u00e2ch\u00e9s dans la nature et infiltrent les sols et les cours d\u2019eau, ce qui entra\u00eene une contamination sans \u00e9gal de nos ressources. Les plantes ont-elles le pouvoir de nettoyer notre eau?<\/p>\n","protected":false},"author":13,"featured_media":6256,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[70],"tags":[],"class_list":["post-7470","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-water-technologies"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L\u2019utilisation de plantes pour filtrer les eaux souterraines - C.I.Eau<\/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:\/\/www.cieau.org\/en\/articles\/lutilisation-de-plantes-pour-filtrer-les-eaux-souterraines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019utilisation de plantes pour filtrer les eaux souterraines - C.I.Eau\" \/>\n<meta property=\"og:description\" content=\"Certains m\u00e9taux lourds sont rel\u00e2ch\u00e9s dans la nature et infiltrent les sols et les cours d\u2019eau, ce qui entra\u00eene une contamination sans \u00e9gal de nos ressources. 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