array:66 [
  "id" => "11650"
  "pid" => "11"
  "tstamp" => "1624953563"
  "headline" => "3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen"
  "alias" => "35-milliarden-tonnen-kohlendioxid-jährlich-einsparen"
  "author" => "von Hubert Hunscheidt"
  "date" => "22.06.2021"
  "time" => "1624365120"
  "subheadline" => ""
  "teaser" => "<p>Düsseldorf - Das Team des Max-Planck-Instituts für Eisenforschung erforscht einen neuen Weg zur Herstellung von grünem Stahl mit Wasserstoffplasma.</p>"
  "addImage" => true
  "overwriteMeta" => ""
  "singleSRC" => "files/news/2021-06/mpie.jpg"
  "alt" => ""
  "imageTitle" => ""
  "size" => "a:3:{i:0;s:0:"";i:1;s:0:"";i:2;s:0:"";}"
  "imagemargin" => "a:5:{s:6:"bottom";s:0:"";s:4:"left";s:0:"";s:5:"right";s:0:"";s:3:"top";s:0:"";s:4:"unit";s:0:"";}"
  "imageUrl" => ""
  "fullsize" => false
  "caption" => ""
  "floating" => "above"
  "addEnclosure" => ""
  "enclosure" => []
  "source" => "default"
  "jumpTo" => "0"
  "articleId" => "0"
  "url" => ""
  "target" => ""
  "cssClass" => ""
  "noComments" => ""
  "featured" => ""
  "published" => "1"
  "start" => ""
  "stop" => ""
  "lazyDisable" => ""
  "syncArchive" => "0"
  "uuid" => "3b0ae3df-a116-458c-8147-2ae1049af859"
  "class" => " news_category_4 category_4 news_category_12 category_12"
  "newsHeadline" => "3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen"
  "subHeadline" => ""
  "hasSubHeadline" => false
  "linkHeadline" => "<a href="news-details/35-milliarden-tonnen-kohlendioxid-j%C3%A4hrlich-einsparen.html" title="Den Artikel lesen: 3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen" itemprop="url">3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen</a>"
  "more" => "<a href="news-details/35-milliarden-tonnen-kohlendioxid-j%C3%A4hrlich-einsparen.html" title="Den Artikel lesen: 3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen" itemprop="url">read more<span class="invisible"> 3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen</span></a>"
  "link" => "news-details/35-milliarden-tonnen-kohlendioxid-j%C3%A4hrlich-einsparen.html"
  "archive" => NewsArchiveModel {#508
    #arrData: array:27 [
      "id" => "11"
      "tstamp" => "1605735698"
      "title" => "DE - Nachrichten"
      "jumpTo" => "99"
      "protected" => ""
      "groups" => null
      "allowComments" => ""
      "notify" => "notify_admin"
      "sortOrder" => "ascending"
      "perPage" => "0"
      "moderate" => ""
      "bbcode" => ""
      "requireLogin" => ""
      "disableCaptcha" => ""
      "categories" => null
      "limitCategories" => "0"
      "syncFilesDir" => b")LÃѧo\x11ê—×Hß7\x1C7P"
      "syncUpdate" => ""
      "syncCron" => ""
      "ignoreDuplicateAliases" => ""
      "syncUnpublished" => ""
      "syncLimitCategories" => null
      "syncArchives" => "a:1:{i:0;s:2:"20";}"
      "syncSourceUrl" => "http://de.market-steel.com"
      "syncTarget" => ""
      "syncFixRelativeUrls" => ""
      "syncSource" => ""
    ]
    #arrModified: []
    #arrRelations: array:2 [
      "jumpTo" => array:4 [
        "table" => "tl_page"
        "field" => "id"
        "type" => "hasOne"
        "load" => "eager"
      ]
      "groups" => array:4 [
        "table" => "tl_member_group"
        "field" => "id"
        "type" => "hasMany"
        "load" => "lazy"
      ]
    ]
    #arrRelated: array:1 [
      "jumpTo" => PageModel {#435
        #blnDetailsLoaded: true
        #arrData: array:80 [
          "id" => "99"
          "pid" => "130"
          "sorting" => "128"
          "tstamp" => "1604611817"
          "title" => "Nachrichten Details"
          "alias" => "news-details"
          "type" => "regular"
          "pageTitle" => ""
          "language" => "de"
          "robots" => "index,follow"
          "description" => null
          "redirect" => "permanent"
          "jumpTo" => "0"
          "redirectBack" => ""
          "url" => ""
          "target" => ""
          "dns" => ""
          "staticFiles" => ""
          "staticPlugins" => ""
          "fallback" => ""
          "adminEmail" => ""
          "dateFormat" => "d.m.Y"
          "timeFormat" => "H:i:s"
          "datimFormat" => "d.m.Y"
          "createSitemap" => ""
          "sitemapName" => ""
          "useSSL" => ""
          "autoforward" => ""
          "protected" => false
          "groups" => false
          "includeLayout" => ""
          "layout" => "9"
          "mobileLayout" => "0"
          "includeCache" => ""
          "cache" => "43200"
          "clientCache" => "0"
          "includeChmod" => ""
          "cuser" => "0"
          "cgroup" => "0"
          "chmod" => "a:9:{i:0;s:2:"u1";i:1;s:2:"u2";i:2;s:2:"u3";i:3;s:2:"u4";i:4;s:2:"u5";i:5;s:2:"u6";i:6;s:2:"g4";i:7;s:2:"g5";i:8;s:2:"g6";}"
          "noSearch" => ""
          "cssClass" => "news-details"
          "sitemap" => "map_default"
          "hide" => "1"
          "guests" => ""
          "tabindex" => "0"
          "accesskey" => ""
          "published" => "1"
          "start" => ""
          "stop" => ""
          "catalogRoutingTable" => ""
          "catalogMasterTable" => ""
          "catalogChangeLanguageTable" => ""
          "catalogRouting" => ""
          "catalogSetAutoItem" => ""
          "catalogRoutingParameter" => null
          "catalogUseRouting" => ""
          "catalogUseChangeLanguage" => ""
          "catalogShowInBreadcrumb" => ""
          "catalogUseMaster" => ""
          "dlh_googlemaps_apikey" => ""
          "newsCategories_param" => ""
          "mainAlias" => "nachrichten"
          "mainTitle" => "Nachrichten"
          "mainPageTitle" => "Nachrichten"
          "parentAlias" => "aktuell"
          "parentTitle" => "Aktuell"
          "parentPageTitle" => "Aktuell"
          "folderUrl" => "nachrichten/aktuell/"
          "rootId" => "46"
          "rootAlias" => "marketsteel-de"
          "rootTitle" => "marketSTEEL de"
          "rootPageTitle" => "marketSTEEL de"
          "domain" => "www.marketsteel.de"
          "rootLanguage" => "de"
          "rootIsPublic" => true
          "rootIsFallback" => true
          "rootUseSSL" => "1"
          "rootFallbackLanguage" => "de"
          "trail" => array:4 [
            0 => "46"
            1 => "98"
            2 => "130"
            3 => "99"
          ]
        ]
        #arrModified: array:10 [
          "protected" => ""
          "groups" => null
          "layout" => "0"
          "mobileLayout" => "0"
          "cache" => "0"
          "clientCache" => "0"
          "language" => ""
          "dateFormat" => ""
          "timeFormat" => ""
          "datimFormat" => ""
        ]
        #arrRelations: array:6 [
          "jumpTo" => array:4 [
            "table" => "tl_page"
            "field" => "id"
            "type" => "hasOne"
            "load" => "lazy"
          ]
          "groups" => array:4 [
            "table" => "tl_member_group"
            "field" => "id"
            "type" => "hasMany"
            "load" => "lazy"
          ]
          "layout" => array:4 [
            "table" => "tl_layout"
            "field" => "id"
            "type" => "hasOne"
            "load" => "lazy"
          ]
          "mobileLayout" => array:4 [
            "table" => "tl_layout"
            "field" => "id"
            "type" => "hasOne"
            "load" => "lazy"
          ]
          "cuser" => array:4 [
            "table" => "tl_user"
            "field" => "id"
            "type" => "hasOne"
            "load" => "lazy"
          ]
          "cgroup" => array:4 [
            "table" => "tl_user_group"
            "field" => "id"
            "type" => "hasOne"
            "load" => "lazy"
          ]
        ]
        #arrRelated: []
        #blnPreventSaving: true
      }
    ]
    #blnPreventSaving: false
  }
  "count" => 0
  "text" => Closure {#527
    class: "Contao\ModuleNews"
    this: ModuleNewsReader {#487 …}
    use: {
      $id: "11650"
    }
    file: "/mnt/web412/b0/17/59421617/htdocs/marketsteel_international/vendor/contao/news-bundle/src/Resources/contao/modules/ModuleNews.php"
    line: "127 to 141"
  }
  "hasText" => Closure {#530
    class: "Contao\ModuleNews"
    this: ModuleNewsReader {#487 …}
    use: {
      $objArticle: NewsModel {#529 …}
    }
    file: "/mnt/web412/b0/17/59421617/htdocs/marketsteel_international/vendor/contao/news-bundle/src/Resources/contao/modules/ModuleNews.php"
    line: "143 to 146"
  }
  "hasTeaser" => true
  "hasMetaFields" => true
  "numberOfComments" => null
  "commentCount" => null
  "timestamp" => "1624365120"
  "datetime" => "2021-06-22T12:32:00+00:00"
  "width" => 640
  "height" => 365
  "arrSize" => array:7 [
    0 => 640
    1 => 324
    2 => 2
    3 => "width="640" height="324""
    "bits" => 8
    "channels" => 3
    "mime" => "image/jpeg"
  ]
  "imgSize" => " width="640" height="324""
  "picture" => array:4 [
    "img" => array:4 [
      "srcset" => "assets/images/8/mpie-0ea02c40.jpg"
      "src" => "assets/images/8/mpie-0ea02c40.jpg"
      "width" => 640
      "height" => 324
    ]
    "sources" => []
    "alt" => ""
    "title" => ""
  ]
  "floatClass" => " float_above"
  "src" => "assets/images/8/mpie-0ea02c40.jpg"
  "linkTitle" => ""
  "addBefore" => true
  "margin" => ""
  "categories" => array:2 [
    12 => array:23 [
      "id" => "12"
      "pid" => "0"
      "sorting" => "1152"
      "tstamp" => "1537387030"
      "title" => "Stahl-Erzeugung"
      "frontendTitle" => "Stahl-Erzeugung"
      "alias" => "stahl-erzeugung"
      "cssClass" => ""
      "description" => null
      "image" => null
      "hideInList" => "0"
      "hideInReader" => "0"
      "excludeInRelated" => "0"
      "jumpTo" => "0"
      "published" => "1"
      "model" => NewsCategoryModel {#553
        #arrData: array:15 [
          "id" => "12"
          "pid" => "0"
          "sorting" => "1152"
          "tstamp" => "1537387030"
          "title" => "Stahl-Erzeugung"
          "frontendTitle" => "Stahl-Erzeugung"
          "alias" => "stahl-erzeugung"
          "cssClass" => ""
          "description" => null
          "image" => null
          "hideInList" => "0"
          "hideInReader" => "0"
          "excludeInRelated" => "0"
          "jumpTo" => "0"
          "published" => "1"
        ]
        #arrModified: []
        #arrRelations: []
        #arrRelated: []
        #blnPreventSaving: false
      }
      "name" => "Stahl-Erzeugung"
      "class" => "news_category_12 category_12"
      "href" => ""
      "hrefWithParam" => ""
      "targetPage" => null
      "linkTitle" => "Stahl-Erzeugung"
      "generateUrl" => Closure {#561
        class: "Codefog\NewsCategoriesBundle\EventListener\TemplateListener"
        this: TemplateListener {#559 …}
        parameters: {
          $page: {
            typeHint: "Contao\PageModel"
          }
          $absolute: {
            default: false
          }
        }
        use: {
          $category: NewsCategoryModel {#553}
        }
        file: "/mnt/web412/b0/17/59421617/htdocs/marketsteel_international/vendor/codefog/contao-news_categories/src/EventListener/TemplateListener.php"
        line: "145 to 147"
      }
    ]
    4 => array:23 [
      "id" => "4"
      "pid" => "0"
      "sorting" => "128"
      "tstamp" => "1567029071"
      "title" => "Branchen-News Wirtschaft"
      "frontendTitle" => "Wirtschaft"
      "alias" => "branchen-news-wirtschaft"
      "cssClass" => ""
      "description" => null
      "image" => null
      "hideInList" => "0"
      "hideInReader" => "0"
      "excludeInRelated" => "0"
      "jumpTo" => "0"
      "published" => "1"
      "model" => NewsCategoryModel {#558
        #arrData: array:15 [
          "id" => "4"
          "pid" => "0"
          "sorting" => "128"
          "tstamp" => "1567029071"
          "title" => "Branchen-News Wirtschaft"
          "frontendTitle" => "Wirtschaft"
          "alias" => "branchen-news-wirtschaft"
          "cssClass" => ""
          "description" => null
          "image" => null
          "hideInList" => "0"
          "hideInReader" => "0"
          "excludeInRelated" => "0"
          "jumpTo" => "0"
          "published" => "1"
        ]
        #arrModified: []
        #arrRelations: []
        #arrRelated: []
        #blnPreventSaving: false
      }
      "name" => "Wirtschaft"
      "class" => "news_category_4 category_4"
      "href" => ""
      "hrefWithParam" => ""
      "targetPage" => null
      "linkTitle" => "Wirtschaft"
      "generateUrl" => Closure {#567
        class: "Codefog\NewsCategoriesBundle\EventListener\TemplateListener"
        this: TemplateListener {#559 …}
        parameters: {
          $page: {
            typeHint: "Contao\PageModel"
          }
          $absolute: {
            default: false
          }
        }
        use: {
          $category: NewsCategoryModel {#558}
        }
        file: "/mnt/web412/b0/17/59421617/htdocs/marketsteel_international/vendor/codefog/contao-news_categories/src/EventListener/TemplateListener.php"
        line: "145 to 147"
      }
    ]
  ]
  "categoriesList" => array:2 [
    12 => "Stahl-Erzeugung"
    4 => "Wirtschaft"
  ]
]

3,5 Milliarden Tonnen Kohlendioxid jährlich einsparen

von Hubert Hunscheidt

Deutschland, Europa und fast alle Länder der Welt streben eine klimaneutrale Wirtschaft an. Das bedeutet, so viel CO2-Emissionen wie möglich einzusparen und die verbleibenden Emissionen zu kompensieren. Doch dieses Ziel wird mit der heutigen Technik kaum erreicht. Einer der größten industriellen CO2-Emittenten, die Eisen- und Stahlindustrie, hat bisher noch keine Möglichkeit in großem Stil grünen Stahl zu produzieren und ist bis heute für etwa 7% aller CO2-Emissionen weltweit verantwortlich. Angesichts dieser Herausforderungen erforscht ein Team des Max-Planck-Instituts für Eisenforschung (MPIE) die Möglichkeit, Wasserstoffplasma für die Reduktion von Eisenerz anstelle von Koks oder reformiertem Erdgas einzusetzen. Ihre neuesten Ergebnisse veröffentlichten die Wissenschaftlerinnen und Wissenschaftler in der Fachzeitschrift Acta Materialia.

„Die Verwendung von reinem Wasserstoff anstelle von Koks oder reformiertem Erdgas zur Reduktion von Eisenerz kann ein Weg sein, um CO2-Emissionen einzusparen. Allerdings erfordert die chemische Reaktion mit reinem Wasserstoff eine externe Energiezufuhr. Die Verwendung von Wasserstoffplasma dahingegen erlaubt die Reduktion mit weniger Energie durchzuführen. Während der Reduktion von Eisenerz im Lichtbogenofen, kollidieren H2-Moleküle aufeinander und mit Elektronen, was zur Bildung von hochenergetischem Wasserstoff führt. Dieser gibt seine Energie teilweise an der Reaktionsgrenzfläche zwischen Oxid und Plasmalichtbogen ab. Diese freigesetzte Energie wiederum wird für die Reduktionsreaktion benötigt. Der ganze Prozess ist also exotherm, da er keine externe Energiezufuhr braucht. Deshalb ist der Einsatz von Wasserstoffplasma anstelle von reinem Wasserstoff hier vorteilhaft“, erklärt Dr. Isnaldi Souza, Postdoktorand am MPIE und Erstautor der Publikation.

Quelle und Foto: Max-Planck-Institut für Eisenforschung GmbH

Zurück