{"id":134821,"date":"2024-10-23T07:58:56","date_gmt":"2024-10-23T04:58:56","guid":{"rendered":"https:\/\/tietopankki.crnet.fi\/fi\/news\/microwave-tech-targets-polypropylene-waste\/"},"modified":"2024-10-23T07:58:56","modified_gmt":"2024-10-23T04:58:56","slug":"microwave-tech-targets-polypropylene-waste","status":"publish","type":"post","link":"https:\/\/tietopankki.crnet.fi\/fi\/news\/microwave-tech-targets-polypropylene-waste\/","title":{"rendered":"Microwave tech targets polypropylene waste"},"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\/134821\" \/>\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>According to the West Virginia University (WVU) team behind the technology, the method relies on microwave radiation to heat an intermediary \u2018catalyst\u2019 material, which then transfers the heat to the polypropylene waste. Rather than breaking the material down into tiny pieces, the process converts polypropylene back into propylene, which can be reused in new plastics or other products.<\/p>\n<p>Efforts to date to separate propylene from polypropylene waste have largely relied on thermochemical approaches such as pyrolysis, where the material is heated in an oxygen-free environment. But according to Wang, polypropylene has largely resisted those efforts, which is why his research has focused on microwave energy as an alternative. As well as operating at a much lower temperature \u2013 300\u00b0C versus 600-700\u00b0C for pyrolysis \u2013 the microwave tech also allows more precise control over the recovery process.<\/p>\n<p>\u201cThe pyrolysis of polypropylene typically results in a propylene yield of less than 25 per cent even with an optimised process,\u201d said Wang. \u201cOur challenge is to use microwaves to do it in a way that is cost competitive and can be practically implemented.\u201d<\/p>\n<p>Source: <a rel=\"noopener\" href=\"https:\/\/www.theengineer.co.uk\/content\/news\/microwave-tech-targets-polypropylene-waste\">The Engineer<\/a><\/p>\n<\/div>\n<p>The post <a rel=\"noopener\" href=\"https:\/\/vastuullisuusuutiset.fi\/fi\/environmental-news-en\/3-611\/\">Microwave tech targets polypropylene waste<\/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":[575,16609,16610],"class_list":["post-134821","post","type-post","status-publish","format-standard","hentry","category-news","tag-environmental-news-en","tag-microwave","tag-polypropylene-waste"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/posts\/134821","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=134821"}],"version-history":[{"count":0,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/posts\/134821\/revisions"}],"wp:attachment":[{"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/media?parent=134821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/categories?post=134821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tietopankki.crnet.fi\/fi\/wp-json\/wp\/v2\/tags?post=134821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}