{"id":1606,"date":"2018-03-20T13:47:48","date_gmt":"2018-03-20T12:47:48","guid":{"rendered":"https:\/\/www.umweltperspektiven.ch\/?p=1606"},"modified":"2022-02-09T11:10:54","modified_gmt":"2022-02-09T10:10:54","slug":"bakterien-schlagen-bei-pipeline-lecks-sofort-alarm","status":"publish","type":"post","link":"https:\/\/www.organisator.ch\/fr\/sustainability\/2018-03-20\/bakterien-schlagen-bei-pipeline-lecks-sofort-alarm\/","title":{"rendered":"Les bact\u00e9ries donnent imm\u00e9diatement l'alerte en cas de fuite d'un pipeline"},"content":{"rendered":"<figure id=\"attachment_1613\" aria-describedby=\"caption-attachment-1613\" style=\"width: 680px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1613 size-medium\" src=\"\/\/www.umweltperspektiven.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm.jpg\" alt=\"\" width=\"680\" height=\"453\" srcset=\"https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm.jpg 870w, https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm-680x453.jpg 680w, https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm-768x511.jpg 768w, https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm-18x12.jpg 18w, https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm-263x175.jpg 263w, https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm-526x350.jpg 526w, https:\/\/www.organisator.ch\/wp-content\/uploads\/2018\/03\/Bakterien_schlagen_bei_Pipeline-Lecks_sofort_Alarm-300x200.jpg 300w\" sizes=\"auto, (max-width: 680px) 100vw, 680px\" \/><figcaption id=\"caption-attachment-1613\" class=\"wp-caption-text\">Veera Gnaneswar Gude - Professeur adjoint d'ing\u00e9nierie civile et environnementale. (Copyright : Megan Bean\/ Universit\u00e9 d'\u00c9tat du Mississippi)<\/figcaption><\/figure>\n<div>\n<div>\n<p>Des bact\u00e9ries, ou plut\u00f4t des capteurs vivants, devraient \u00e0 l'avenir emp\u00eacher les catastrophes environnementales provoqu\u00e9es par des fuites dans les gazoducs et les ol\u00e9oducs. \"L'avantage de nos capteurs est qu'ils peuvent d\u00e9tecter de tr\u00e8s petites fuites, ce qui permet au personnel du centre de contr\u00f4le de proc\u00e9der tr\u00e8s rapidement aux r\u00e9parations\", explique Veera Gnaneswar Gude, ma\u00eetre de conf\u00e9rences en ing\u00e9nierie environnementale \u00e0 la Mississippi State University.<\/p>\n<p><strong><span class=\"FtxtBold\">Des micro-organismes sous tension<\/span><\/strong><\/p>\n<\/div>\n<p class=\"FtxtP\">Gude utilise des bact\u00e9ries qui lib\u00e8rent des \u00e9lectrons lors de leur m\u00e9tabolisme. Elles se nourrissent d'hydrocarbures comme le p\u00e9trole et le gaz. Ces particules atomiques \u00e9lectriquement n\u00e9gatives traversent une r\u00e9sistance et se retrouvent chez une autre bact\u00e9rie qui absorbe des \u00e9lectrons. Une tension \u00e9lectrique est ainsi cr\u00e9\u00e9e entre les deux types de bact\u00e9ries.<\/p>\n<p class=\"FtxtP\">Des capteurs de bact\u00e9ries plac\u00e9s sur toute la surface de l'int\u00e9rieur d'un pipeline fournissent ainsi des donn\u00e9es fiables. Si une fuite se produit, la tension se modifie. C'est le signal d'alarme pour l'\u00e9quipe de r\u00e9paration. Gude et son \u00e9quipe pr\u00e9sentent leur solution lors de la 255e r\u00e9union nationale de l'American Chemical Society <a href=\"\/\/acs.org\" target=\"_blank\" rel=\"nofollow noopener\">http:\/\/acs.org<\/a> \u00e0 la Nouvelle-Orl\u00e9ans, qui se poursuit jusqu'au 22 mars.<\/p>\n<p class=\"FtxtP\"><strong><span class=\"FtxtBold\">Un million de litres d'essence d\u00e9vers\u00e9s<\/span><\/strong><\/p>\n<p class=\"FtxtP\">Les pipelines sont r\u00e9guli\u00e8rement inspect\u00e9s. Lors de l'une d'entre elles, le personnel a d\u00e9couvert une importante fuite dans un gazoduc en Alabama. Elle n'a pas pu \u00eatre colmat\u00e9e imm\u00e9diatement, car il fallait d'abord faire baisser la pression. Au total, environ un million de litres d'essence se sont \u00e9coul\u00e9s. \"A l'avenir, nous ne devrons plus attendre que la situation d\u00e9g\u00e9n\u00e8re\", explique Gude. C'est le premier avantage. Le second : les bact\u00e9ries qu'il a \u00e9tudi\u00e9es auparavant pourraient \u00eatre utilis\u00e9es pour traiter les sols et les eaux pollu\u00e9s.<\/p>\n<p class=\"FtxtP\">Gude est \u00e0 la recherche d'un mat\u00e9riau dans lequel il pourrait immobiliser les deux bact\u00e9ries. Il teste actuellement un plastique hautement poreux et des rev\u00eatements \u00e0 base biologique. Outre dans les pipelines, le capteur vivant pourrait \u00e9galement \u00eatre utilis\u00e9 pour d\u00e9tecter les fuites de p\u00e9trole et de gaz au fond de la mer. Il pourrait en outre \u00eatre utilis\u00e9 dans le cadre de la fracturation pour \u00e9viter que de l'eau contamin\u00e9e ne se r\u00e9pande dans l'environnement. La fracturation consiste \u00e0 injecter \u00e0 haute pression un m\u00e9lange d'eau, de sable et de quelques produits chimiques dans le sous-sol afin d'ouvrir les roches contenant du p\u00e9trole et du gaz, ce qui permet d'extraire les mati\u00e8res premi\u00e8res fossiles.<\/p>\n<\/div>\n<p><a href=\"\/\/msstate.edu\">www.msstate.edu <\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Bakterien, respektive lebende Sensoren sollen k\u00fcnftig Umweltkatastrophen verhindern, die durch Lecks in Erdgas- und \u00d6l-Pipelines ausgel\u00f6st werden. &#8222;Der Vorteil unserer Sensoren ist die Tatsache, dass sie bereits sehr kleine Lecks auffinden, sodass die Mitarbeiter in der Leitstelle Reparaturen sehr schnell veranlassen k\u00f6nnen&#8220;, sagt Veera Gnaneswar Gude, Dozent f\u00fcr Umwelt-Engineering an der Mississippi State University. Mikroorganismen [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1613,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_focuskw":"Bakterien","_yoast_wpseo_metadesc":"Bakterien stehen nun der Forschung zur Verf\u00fcgung, um verunreinigte B\u00f6den und verseuchtes Wasser - so etwa in Pipelines - zu behandeln.","articlekey":"","footnotes":""},"categories":[580],"tags":[1586,2111,2368],"class_list":["post-1606","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sustainability","tag-laborwissenschafte","tag-sensorik","tag-umweltkatastrophen"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Bakterien schlagen bei Pipeline-Lecks sofort Alarm - Organisator<\/title>\n<meta name=\"description\" content=\"Bakterien stehen nun der Forschung zur Verf\u00fcgung, um verunreinigte B\u00f6den und verseuchtes Wasser - 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