{"id":4256,"date":"2007-04-02T15:18:44","date_gmt":"2007-04-02T15:18:44","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/"},"modified":"2012-07-12T09:53:39","modified_gmt":"2012-07-12T09:53:39","slug":"ncrocarburants","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/","title":{"rendered":"N\u00e9cro-carburants"},"content":{"rendered":"

\"Mas\"<\/a> L’universit\u00e9 de Cornell<\/a> (Ithaca, New-York) et le professeur Pimentel ont rendus leur verdict sur le bilan \u00e9nerg\u00e9tique de la production d’\u00e9thanol \u00e0 partir de Ma\u00efs.<\/a>
Il est non seulement compl\u00e9tement n\u00e9gatif, mais aussi catastrophique. En effet, pour un litre d’\u00e9thanol, il faut :
– 2.37 kg de ma\u00efs,
– 500 grammes de charbon,
– 4 litres d’eau.
De plus, il faut compter, en sus :
– les intrants pour la production des engrais et pesticides,
– 500 \u00e0 1500 litres d’eau pour produire 1 kg de ma\u00efs. Soit de 1200 \u00e0 3600 litres d’eau par litre d’\u00e9thanol. <\/p>\n

Rien de nouveau, donc, mais la confirmation scientifique de ce qu’on savait d\u00e9j\u00e0 : certaines plantes ne sont pas faites pour fabriquer de l’\u00e9thanol<\/a>, seul la canne \u00e0 sucre s’y pr\u00eate vraiment. Le probl\u00e8me est le m\u00eame avec le bl\u00e9, et beaucoup d’autres sources. De telles sources d’\u00e9thanol, voudrait dire, que l’on va r\u00e9duire drastiquement le parc automobile (de l’ordre de 90 %) pour ne le r\u00e9server qu’aux plus ais\u00e9s, ou serve simplement d’outil de stabilisation des cours.
En ce qui concerne la canne \u00e0 sucre, l’accent est mis \u00e0 certains endroits sur l’emploi d’une main d’oeuvre quasi-esclavagis\u00e9e, d\u00e9cim\u00e9e par des conditions de travail \u00e9pouvantable, notamment en Colombie, dans une moindre mesure au Br\u00e9sil.
Les probl\u00e8mes de concurrence entre alimentation humaine et \u00e9thanol, vont clairement se poser. D’abord pour le ma\u00efs (les 25 kg sont pass\u00e9s de 1.85 $ \u00e0 4.05 $ en 15 mois), et la production de bl\u00e9 est en recul, parfois consid\u00e9rable (elle s’effondre en Australie de plus de moiti\u00e9). De plus, m\u00eame aux Usa, cette substitution risque poser des probl\u00e8mes alimentaires (toutes les productions animales sont nourries au ma\u00efs).
Donc le n\u00e9cro-carburant, pose plus de probl\u00e8me qu’il n’en r\u00e9soud. Voire, risque de cr\u00e9er de nouvelles \u00e9meutes de la faim. M\u00eame dans les pays industrialis\u00e9s.<\/p>\n","protected":false},"excerpt":{"rendered":"

L’universit\u00e9 de Cornell (Ithaca, New-York) et le professeur Pimentel ont rendus leur verdict sur le bilan \u00e9nerg\u00e9tique de la production d’\u00e9thanol \u00e0 partir de Ma\u00efs.Il est non seulement compl\u00e9tement n\u00e9gatif, mais aussi catastrophique. En effet, pour un litre d’\u00e9thanol, il faut :– 2.37 kg de ma\u00efs,– 500 grammes de charbon,– 4 litres d’eau.De plus, il […]<\/p>\n","protected":false},"author":198,"featured_media":5258,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,8],"tags":[1963],"class_list":["post-4256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-bio-carburants","tag-universite-de-cornell-ethanol-bilan-energetique"],"yoast_head":"\nN\u00e9cro-carburants - leblogenergie.com<\/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:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"N\u00e9cro-carburants - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"L’universit\u00e9 de Cornell (Ithaca, New-York) et le professeur Pimentel ont rendus leur verdict sur le bilan \u00e9nerg\u00e9tique de la production d’\u00e9thanol \u00e0 partir de Ma\u00efs.Il est non seulement compl\u00e9tement n\u00e9gatif, mais aussi catastrophique. En effet, pour un litre d’\u00e9thanol, il faut :– 2.37 kg de ma\u00efs,– 500 grammes de charbon,– 4 litres d’eau.De plus, il […]\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/mas.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"patrick reymond\" \/>\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\":\"WebPage\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/\",\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/\",\"name\":\"N\u00e9cro-carburants - leblogenergie.com\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/mas.jpg\",\"datePublished\":\"2007-04-02T15:18:44+00:00\",\"dateModified\":\"2012-07-12T09:53:39+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/#\/schema\/person\/348ae2a6d3fa221c5d38a293ee3dba3c\"},\"breadcrumb\":{\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/#primaryimage\",\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/mas.jpg\",\"contentUrl\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/mas.jpg\",\"width\":\"250\",\"height\":\"340\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"N\u00e9cro-carburants\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/#website\",\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/\",\"name\":\"leblogenergie\",\"description\":\"Just another The Social Media Group Network site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/#\/schema\/person\/348ae2a6d3fa221c5d38a293ee3dba3c\",\"name\":\"patrick reymond\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g\",\"caption\":\"patrick reymond\"},\"url\":\"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/author\/patrick-reymond\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"N\u00e9cro-carburants - leblogenergie.com","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2007\/04\/02\/ncrocarburants\/","twitter_card":"summary_large_image","twitter_title":"N\u00e9cro-carburants - leblogenergie.com","twitter_description":"L’universit\u00e9 de Cornell (Ithaca, New-York) et le professeur Pimentel ont rendus leur verdict sur le bilan \u00e9nerg\u00e9tique de la production d’\u00e9thanol \u00e0 partir de Ma\u00efs.Il est non seulement compl\u00e9tement n\u00e9gatif, mais aussi catastrophique. 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