{"id":124861,"date":"2024-01-25T07:57:57","date_gmt":"2024-01-25T05:57:57","guid":{"rendered":"https:\/\/tietopankki.crnet.fi\/fi\/news\/zapping-red-mud-in-plasma-turns-mine-waste-into-valuable-iron\/"},"modified":"2024-01-25T07:57:57","modified_gmt":"2024-01-25T05:57:57","slug":"zapping-red-mud-in-plasma-turns-mine-waste-into-valuable-iron","status":"publish","type":"post","link":"https:\/\/tietopankki.crnet.fi\/fi\/news\/zapping-red-mud-in-plasma-turns-mine-waste-into-valuable-iron\/","title":{"rendered":"Zapping \u2018red mud\u2019 in plasma turns mine waste into valuable iron"},"content":{"rendered":"<div class=\"mp_wrapper\">\n  <div class=\"mepr-unauthorized-message\">\n    <p>You are unauthorized to view this page.<\/p>\n  <\/div>\n  <div class=\"mepr-login-form-wrap\">\n            \n<div class=\"mp_wrapper mp_login_form\">\n                  <!-- mp-login-form-start -->     <form name=\"mepr_loginform\" id=\"mepr_loginform\" class=\"mepr-form\" action=\"https:\/\/tietopankki.crnet.fi\/fi\/login-2\/\" method=\"post\">\n            <div class=\"mp-form-row mepr_username\">\n        <div class=\"mp-form-label\">\n                              <label for=\"user_login\">Username<\/label>\n        <\/div>\n        <input type=\"text\" name=\"log\" id=\"user_login\" value=\"\" \/>\n      <\/div>\n      <div class=\"mp-form-row mepr_password\">\n        <div class=\"mp-form-label\">\n          <label for=\"user_pass\">Password<\/label>\n          <div class=\"mp-hide-pw\">\n            <input type=\"password\" name=\"pwd\" id=\"user_pass\" value=\"\" \/>\n            <button type=\"button\" class=\"button mp-hide-pw hide-if-no-js\" data-toggle=\"0\" aria-label=\"Show password\">\n              <span class=\"dashicons dashicons-visibility\" aria-hidden=\"true\"><\/span>\n            <\/button>\n          <\/div>\n        <\/div>\n      <\/div>\n            <div>\n        <label><input name=\"rememberme\" type=\"checkbox\" id=\"rememberme\" value=\"forever\" \/> Remember Me<\/label>\n      <\/div>\n      <div class=\"mp-spacer\">&nbsp;<\/div>\n      <div class=\"submit\">\n        <input type=\"submit\" name=\"wp-submit\" id=\"wp-submit\" class=\"button-primary mepr-share-button \" value=\"Log In\" \/>\n        <input type=\"hidden\" name=\"redirect_to\" value=\"\/fi\/wp-json\/wp\/v2\/posts\/124861\" \/>\n        <input type=\"hidden\" name=\"mepr_process_login_form\" value=\"true\" \/>\n        <input type=\"hidden\" name=\"mepr_is_login_page\" value=\"false\" \/>\n      <\/div>\n    <\/form>\n    <div class=\"mp-spacer\">&nbsp;<\/div>\n    <div class=\"mepr-login-actions\">\n        <a\n          href=\"https:\/\/tietopankki.crnet.fi\/fi\/login-2\/?action=forgot_password\"\n          title=\"Click here to reset your password\"\n        >\n          Forgot Password        <\/a>\n    <\/div>\n\n      \n    <!-- mp-login-form-end --> \n  <\/div>\n      <\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"smart_content_wrapper\">\n<p>Over the years, mining for aluminum has left behind billions of tons of the caustic sludge called red mud. But today in Nature, scientists report that a simple chemical process can extract another useful metal, iron, from this waste and render the remainder into a mostly benign substance useful for making concrete. If the process can be scaled up and proves cost-effective, it could help manufacturers convert waste into climate-friendlier steel, the researchers say.<\/p>\n<p>The first step in making aluminum is to mine a rock called bauxite, which is rich in aluminum oxide, also known as alumina. Extracting the alumina leaves behind waste called red mud that is highly alkaline and can also contain toxic heavy metals such as cadmium. Every year this process generates about 180 million tons of red mud. The stuff is left in reservoirs to dry, and dam breaks have unleashed devastating floods. Currently, only a tiny amount of the waste is treated to make it less caustic. After it\u2019s been made harmless, the leftover substance can be used as fill-in construction material.<\/p>\n<p>Pilot-scale study will be needed to help evaluate the economic viability of tapping red mud, Rao Borra says, as well as controlling fumes from the processing. Some steelmakers already operate large arc furnaces, but they would need to construct new ones closer to where red mud is stored.<\/p>\n<p>Source: <a rel=\"noopener\" href=\"https:\/\/www.science.org\/content\/article\/zapping-red-mud-plasma-turns-mine-waste-valuable-iron\">Science<\/a><\/p>\n<\/div>\n<p>The post <a rel=\"noopener\" href=\"https:\/\/vastuullisuusuutiset.fi\/fi\/environmental-news-en\/4-465\/\">Zapping \u2018red mud\u2019 in plasma turns mine waste into valuable iron<\/a> appeared first on <a rel=\"noopener\" href=\"https:\/\/vastuullisuusuutiset.fi\/fi\">Vastuullisuusuutiset.fi<\/a>.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[22],"tags":[575,12968,13078],"class_list":["post-124861","post","type-post","status-publish","format-standard","hentry","category-news","tag-environmental-news-en","tag-mining-waste","tag-red-mud"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/posts\/124861","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/comments?post=124861"}],"version-history":[{"count":0,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/posts\/124861\/revisions"}],"wp:attachment":[{"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/media?parent=124861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/categories?post=124861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/tags?post=124861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}