{"id":44225,"date":"2024-10-23T16:41:28","date_gmt":"2024-10-23T14:41:28","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=article-foret-nature&#038;p=44225"},"modified":"2024-10-23T16:41:28","modified_gmt":"2024-10-23T14:41:28","slug":"la-phytoremediation-par-le-saule","status":"publish","type":"article-foret-nature","link":"https:\/\/foretnature.be\/en\/article-foret-nature\/la-phytoremediation-par-le-saule\/","title":{"rendered":"La phytorem\u00e9diation par le saule"},"content":{"rendered":"<p>En Wallonie, les sites potentiellement contamin\u00e9s se comptent par milliers. Parmi les contaminants pr\u00e9sents, les plus pr\u00e9occupants sont certainement les m\u00e9taux lourds. La phytorem\u00e9diation, une technologie nouvelle qui exploite le potentiel des v\u00e9g\u00e9taux et de leur microflore associ\u00e9e pour extraire ou stabiliser ces m\u00e9taux lourds, pourrait rem\u00e9dier \u00e0 ce probl\u00e8me. Les m\u00e9taux lourds sont pr\u00e9sents dans tous les compartiments de l&rsquo;environnement mais g\u00e9n\u00e9ralement en quantit\u00e9 tr\u00e8s faible. On dit que les m\u00e9taux sont pr\u00e9sents en traces et on parle d&rsquo;\u00ab \u00e9l\u00e9ments en traces m\u00e9talliques \u00bb ou ETM. La biodisponibilit\u00e9 repr\u00e9sente la capacit\u00e9 d&rsquo;un ETM \u00e0 passer d&rsquo;un compartiment du sol vers une bact\u00e9rie, un animal ou un v\u00e9g\u00e9tal. Le saule est consid\u00e9r\u00e9 comme le candidat id\u00e9al pour la phytorem\u00e9diation gr\u00e2ce \u00e0 sa capacit\u00e9 \u00e0 produire une forte biomasse, \u00e0 son caract\u00e8re pionnier et \u00e0 sa tol\u00e9rance aux conditions environnementales difficiles. Son utilisation en phytorem\u00e9diation permettrait d&rsquo;assainir nos sols de mani\u00e8re naturelle, sans d\u00e9sagr\u00e9ments sonores ou visuels. Ce couvert v\u00e9g\u00e9tal permettrait \u00e9galement de freiner l&rsquo;\u00e9rosion du sol et le lessivage. Le taillis \u00e0 tr\u00e8s court terme (exploit\u00e9 tous les 3-4 ans) est la technique de production \u00e0 privil\u00e9gier car les ETM se concentrent dans l&rsquo;aubier. Les parties ligneuses, br\u00fbl\u00e9es, pourraient \u00eatre utilis\u00e9es comme bio\u00e9nergie et la combustion devrait \u00eatre contr\u00f4l\u00e9e pour r\u00e9cup\u00e9rer les m\u00e9taux lourds contenus dans les cendres. Ces derni\u00e8res pourraient \u00eatre r\u00e9inject\u00e9es dans le cycle de production des m\u00e9taux ou enfouies dans les centres d&rsquo;enfouissement technique. Un cycle de recyclage des m\u00e9taux lourds via la phytorem\u00e9diation est donc envisageable. [B.C.]<\/p>","protected":false},"excerpt":{"rendered":"<p>En Wallonie, les sites potentiellement contamin\u00e9s se comptent par milliers. Parmi les contaminants pr\u00e9sents, les plus pr\u00e9occupants sont certainement les m\u00e9taux lourds. La phytorem\u00e9diation, une technologie nouvelle qui exploite le potentiel des v\u00e9g\u00e9taux et de leur microflore associ\u00e9e pour extraire ou stabiliser ces m\u00e9taux lourds, pourrait rem\u00e9dier \u00e0 ce probl\u00e8me. Les m\u00e9taux lourds sont pr\u00e9sents [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[49],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La phytorem\u00e9diation par le saule - For\u00eat.Nature<\/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:\/\/foretnature.be\/en\/article-foret-nature\/la-phytoremediation-par-le-saule\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La phytorem\u00e9diation par le saule - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"En Wallonie, les sites potentiellement contamin\u00e9s se comptent par milliers. Parmi les contaminants pr\u00e9sents, les plus pr\u00e9occupants sont certainement les m\u00e9taux lourds. La phytorem\u00e9diation, une technologie nouvelle qui exploite le potentiel des v\u00e9g\u00e9taux et de leur microflore associ\u00e9e pour extraire ou stabiliser ces m\u00e9taux lourds, pourrait rem\u00e9dier \u00e0 ce probl\u00e8me. 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Parmi les contaminants pr\u00e9sents, les plus pr\u00e9occupants sont certainement les m\u00e9taux lourds. La phytorem\u00e9diation, une technologie nouvelle qui exploite le potentiel des v\u00e9g\u00e9taux et de leur microflore associ\u00e9e pour extraire ou stabiliser ces m\u00e9taux lourds, pourrait rem\u00e9dier \u00e0 ce probl\u00e8me. 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