{"id":36991,"date":"2014-04-08T10:44:25","date_gmt":"2014-04-08T07:44:25","guid":{"rendered":"http:\/\/www.fyysika.ee\/uudised\/?p=36991"},"modified":"2014-12-26T03:02:02","modified_gmt":"2014-12-26T00:02:02","slug":"hubriidne-plasma-kataluutiline-reaktor-ohtlike-gaaside-eemaldamiseks","status":"publish","type":"post","link":"https:\/\/www.fyysika.ee\/?p=36991","title":{"rendered":"H\u00fcbriidne plasma-katal\u00fc\u00fctiline reaktor ohtlike gaaside eemaldamiseks"},"content":{"rendered":"<p><strong>Indrek J\u00f5gi<\/strong>, Ants Haljaste, Matti Laan <a href=\"http:\/\/m.iopscience.iop.org\/0268-1242\/29\/4\/043001\/pdf\/0268-1242_29_4_043001.pdf\">\u201eHybrid TiO<sub>2<\/sub> based plasma-catalytic reactors for the removal of hazardous gasses\u201c Surf. Coat. Technol. 242 (2014) 195-199<\/a>.<\/p>\n<p>Kateldes ja mootorites k\u00fctuste p\u00f5lemisel tekkivad l\u00e4mmastik- ja v\u00e4\u00e4veloksiidid (NOx ja SO<sub>2<\/sub>) \u00a0p\u00f5hjustavad atmosf\u00e4\u00e4ri j\u00f5udes happevihmasid ja sudu ning on seet\u00f5ttu ohuks nii inimeste tervisele kui ka keskkonnale. Seet\u00f5ttu on nende \u00fchendite eemaldamiseks t\u00f6\u00f6tatud v\u00e4lja mitmeid p\u00fc\u00fcdureid, mis baseeruvad erinevatel tehnoloogilistel lahendustel. P\u00fc\u00fcdurite toime suureneb, kui \u00a0l\u00e4mmastiku- ja v\u00e4\u00e4vli\u00fchendid eelnevalt oks\u00fcdeerida. \u00dcheks v\u00f5imalikuks oks\u00fcdandiks on plasma kui efektiivne radikaalide allikas. Paraku toimuvad plasmas mitmed ebasoovitavad k\u00f5rvalreaktsioonid mille tulemusena l\u00e4heb osa plasmas toodetud radikaale raisku. Katal\u00fcsaatori lisamine plasmareaktorisse v\u00f5imadab oks\u00fcdeerimise saagist parandada ja lisaks sellele v\u00e4hendada m\u00f5ningaid plasma kahjulikke k\u00f5rvalm\u00f5jusid.<\/p>\n<div id=\"attachment_36994\" style=\"width: 365px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2014\/04\/P1011053.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-36994\" class=\"size-full wp-image-36994    \" title=\"P1011053\" src=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2014\/04\/P1011053.jpg\" alt=\"\" width=\"355\" height=\"266\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/P1011053.jpg 1280w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/P1011053-300x225.jpg 300w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/P1011053-1024x768.jpg 1024w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/P1011053-250x187.jpg 250w\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" \/><\/a><p id=\"caption-attachment-36994\" class=\"wp-caption-text\">Joonis 1. H\u00fcbriidne plasma-katal\u00fc\u00fctililine reaktor.<\/p><\/div>\n<p>Antud t\u00f6\u00f6s uuriti NO<sub>x<\/sub> ja SO<sub>2<\/sub> oks\u00fcdeerimist h\u00fcbriidse plasma-katal\u00fc\u00fctilise reaktori abil (Joonis 1). Leiti, et TiO<sub>2<\/sub> katal\u00fcsaatori juuresolekul oks\u00fcdeeriti nii NO<sub>x<\/sub> kui ka SO<sub>2<\/sub> m\u00e4rgatavalt rohkem. Eriti oluline oli katal\u00fcsaatori m\u00f5ju SO<sub>2<\/sub> eemaldamisel, mil plasma ja katal\u00fcsaatori eraldi kasutamine SO<sub>2<\/sub>-le praktiliselt mingit m\u00f5ju ei avaldanud (Joonis 2). Kuna heitgaasid sisaldavad alati ka veeauru ja s\u00fcsihappegaasi, uuriti ka nende \u00fchendite m\u00f5ju katal\u00fcsaatori t\u00f6\u00f6le. Veeauru olemasolul suurenes kahjulikke \u00fchendite eemaldamine kuni poole v\u00f5rra kuid s\u00fcsihappegaasi m\u00f5ju puudus.<\/p>\n<p>Anal\u00fc\u00fcsides v\u00f5imalikke plasmakeemilisi reaktsioone leiti, et katal\u00fcsaatori positiivse toime p\u00f5hjuseks on tekkivate oks\u00fcdeerivate radikaalide kogunemine katal\u00fcsaatori pinnale. Erinevalt plasmakeskkonnast toimuvad pinnal oks\u00fcdatsioonireaktsioonid valdavalt \u00fchesuunaliselt ja seet\u00f5ttu suurenebki tekitatud radikaalide kasutamise efektiivsus.<\/p>\n<div id=\"attachment_36992\" style=\"width: 483px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2014\/04\/Joonis1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-36992\" class=\"size-full wp-image-36992 \" title=\"Joonis1\" src=\"http:\/\/www.fyysika.ee\/uudised\/wp-content\/uploads\/2014\/04\/Joonis1.jpg\" alt=\"\" width=\"473\" height=\"335\" srcset=\"https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/Joonis1.jpg 525w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/Joonis1-300x212.jpg 300w, https:\/\/www.fyysika.ee\/wp-content\/uploads\/2014\/04\/Joonis1-250x177.jpg 250w\" sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><\/a><p id=\"caption-attachment-36992\" class=\"wp-caption-text\">Joonis 2.V\u00e4\u00e4veloksiidi eemaldamise v\u00f5rdlus plasma ja h\u00fcbriidse plasma-katal\u00fc\u00fctilise reaktori korral.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Indrek J\u00f5gi, Ants Haljaste, Matti Laan \u201eHybrid TiO2 based plasma-catalytic reactors for the removal of hazardous gasses\u201c Surf. Coat. Technol. 242 (2014) 195-199. Kateldes ja mootorites k\u00fctuste p\u00f5lemisel tekkivad l\u00e4mmastik- ja v\u00e4\u00e4veloksiidid (NOx ja SO2) \u00a0p\u00f5hjustavad atmosf\u00e4\u00e4ri j\u00f5udes happevihmasid ja sudu ning on seet\u00f5ttu ohuks nii inimeste tervisele kui ka keskkonnale. Seet\u00f5ttu on nende \u00fchendite [&hellip;]<\/p>\n","protected":false},"author":27,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[19,107,16],"tags":[77,53],"class_list":{"0":"post-36991","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-teadusuudised-eesti-asi","7":"category-tartu-ulikool","8":"category-teadusuudis","9":"tag-kytuseelemendid","10":"tag-tulevikuenergia","11":"entry","12":"has-post-thumbnail"},"_links":{"self":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/36991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=36991"}],"version-history":[{"count":0,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=\/wp\/v2\/posts\/36991\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=36991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=36991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fyysika.ee\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=36991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}