{"id":10495,"date":"2021-09-04T12:49:27","date_gmt":"2021-09-04T12:49:27","guid":{"rendered":"https:\/\/www.africa-press.net\/tchad\/politique\/le-chanvre-un-allie-pour-reduire-le-co2"},"modified":"2021-09-04T13:38:25","modified_gmt":"2021-09-04T13:38:25","slug":"le-chanvre-un-allie-pour-reduire-le-co2","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/tchad\/toutes-les-actualites\/le-chanvre-un-allie-pour-reduire-le-co2","title":{"rendered":"Le chanvre, un alli\u00e9 pour r\u00e9duire le CO2\u00a0?"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong><a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a> &#8211; <a href=\"https:\/\/www.africa-press.net\/tchad\">Tchad<\/a>. <\/strong><\/span>On ne cesse de vanter son int\u00e9r\u00eat pour l\u2019environnement : le chanvre. En France, leader europ\u00e9en, sa production est en plein boom. Et si cette plante mill\u00e9naire nous aidait aujourd\u2019hui \u00e0 r\u00e9duire nos \u00e9missions de CO2 ?<\/p>\n<p>Franck Barbier en est convaincu. Il cultive du chanvre depuis 10 ans et conna\u00eet bien son int\u00e9r\u00eat \u00e9cologique : \u201cLe chanvre n\u2019a pas besoin d\u2019irrigation. On n\u2019est pas oblig\u00e9 de traiter, on n\u2019est pas oblig\u00e9 de d\u00e9sherber contre les mauvaises herbes, on est pas oblig\u00e9 de la prot\u00e9ger contre les maladies, on est pas non plus oblig\u00e9 de prot\u00e9ger la plante contre les insectes parce qu\u2019il n\u2019y a pas de maladies. Il n\u2019y a pas d\u2019insectes\u201d. Et dans le chanvre, tout est bon : l\u2019ext\u00e9rieur, la fibre, est extr\u00eamement solide, mais on utilise aussi l\u2019int\u00e9rieur des tiges, le bois, aussi appel\u00e9 ch\u00e8nevotte, pour par exemple faire du b\u00e9ton et isoler les maisons.<\/p>\n<p><b>Une culture ancienne, tr\u00e8s contr\u00f4l\u00e9e<\/b><\/p>\n<p>Dans les esprits, chanvre et cannabis sont souvent associ\u00e9s. Certes ils sont cousins, appartiennent \u00e0 la m\u00eame esp\u00e8ce, mais contrairement au cannabis, le chanvre contient tr\u00e8s peu de THC, le t\u00e9trahydrocannabinol, la mol\u00e9cule psychoactive qui fait tourner la t\u00eate. La culture industrielle du chanvre est donc uniquement autoris\u00e9e, m\u00eame si tr\u00e8s contr\u00f4l\u00e9e, parce que sa concentration en THC est inf\u00e9rieure \u00e0 0,2 %. Pour le cannabis, elle est sup\u00e9rieure \u00e0 10 %. Autrefois cultiv\u00e9e en masse, puis abandonn\u00e9 pour les fibres synth\u00e9tiques, cette fibre est de retour et sa production atteint des records historiques. La France a tripl\u00e9 sa surface en 30 ans. Elle est aujourd\u2019hui le premier producteur en Europe.<\/p>\n<p><b>Incassable \u00e0 main nue<\/b><\/p>\n<p>Alors la recherche sur cette mati\u00e8re pourtant tr\u00e8s ancienne est en effervescence. Dans le laboratoire Fibres recherche d\u00e9veloppement (FRD), Arnaud Day teste le chanvre sous toutes ses formes, pour l\u2019adapter pour l\u2019industrie. \u201cSelon l\u2019application de ces mat\u00e9riaux, on va aller exploiter diff\u00e9rentes propri\u00e9t\u00e9s. On va apporter une l\u00e9g\u00e8ret\u00e9, par exemple dans certains mat\u00e9riaux, on va apporter un amortissement des vibrations ou une isolation thermique. En apportant des propri\u00e9t\u00e9s nouvelles, on va contribuer v\u00e9ritablement \u00e0 avoir des mat\u00e9riaux plus performants\u201d, nous explique-t-il dans son atelier usine, ses chaussures couvertes de poussi\u00e8re de chanvre.<\/p>\n<p><b>Rouler au chanvre<\/b><\/p>\n<p>Premi\u00e8re grosse industrie \u00e0 y avoir cru, l\u2019automobile fait appel \u00e0 APM, Automotive performance materials. L\u2019entreprise fabrique une mati\u00e8re \u00e0 base de chanvre (20 %) et de plastique pour les tableaux de bord des voitures.<\/p>\n<p>\u201cCes mati\u00e8res remplacent par exemple des fibres de verre avec l\u2019avantage d\u2019\u00eatre beaucoup plus l\u00e9g\u00e8res et d\u2019\u00eatre recyclables\u201d, nous explique son jeune directeur g\u00e9n\u00e9ral, Pierre Demortain. Si l\u2019on en croit APM, \u00e0 ce jour, 3 millions de v\u00e9hicules roulent tous les jours avec ces mati\u00e8res, sans que personne ne s\u2019en doute, des voitures comme la Peugeot 308, la DS7 de Citro\u00ebn ou bien la Renault Clio.<\/p>\n<p>\u201cAujourd\u2019hui en termes d\u2019all\u00e8gement, on est sur 15 \u00e0 25 % sur des applications comme la Clio. Cela va permettre d\u2019avoir un v\u00e9hicule qui consomme moins d\u2019essence, et donc qui \u00e9met moins de CO2.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Tchad. On ne cesse de vanter son int\u00e9r\u00eat pour l\u2019environnement : le chanvre. En France, leader europ\u00e9en, sa production est en plein boom. Et si cette plante mill\u00e9naire nous aidait aujourd\u2019hui \u00e0 r\u00e9duire nos \u00e9missions de CO2 ? Franck Barbier en est convaincu. Il cultive du chanvre depuis 10 ans et conna\u00eet bien [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":10494,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[37,292,803,1448,29],"class_list":["post-10495","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-tchad","tag-co2","tag-reduire","tag-tchad"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Le chanvre, un alli\u00e9 pour r\u00e9duire le CO2\u00a0? - tchad<\/title>\n<meta name=\"description\" content=\"On ne cesse de vanter son int\u00e9r\u00eat pour l\u2019environnement : le chanvre. 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