{"id":603962,"date":"2024-01-08T23:28:34","date_gmt":"2024-01-08T20:28:34","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/processing-biochar-into-pellets-to-offset-emissions-in-concrete-production\/"},"modified":"2024-01-08T23:28:34","modified_gmt":"2024-01-08T20:28:34","slug":"processing-biochar-into-pellets-to-offset-emissions-in-concrete-production","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/processing-biochar-into-pellets-to-offset-emissions-in-concrete-production\/","title":{"rendered":"#Processing biochar into pellets to offset emissions in concrete production"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3a867d4fc09\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3a867d4fc09\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/processing-biochar-into-pellets-to-offset-emissions-in-concrete-production\/#Difficulties_due_to_porosity\" >Difficulties due to porosity<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/processing-biochar-into-pellets-to-offset-emissions-in-concrete-production\/#Net_zero_at_20_share\" >Net zero at 20% share<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/buradabiliyorum.com\/en\/processing-biochar-into-pellets-to-offset-emissions-in-concrete-production\/#Carbon_from_the_atmosphere\" >Carbon from the atmosphere<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2024\/processing-biochar-int.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/processing-biochar-int.jpg\" data-sub-html=\"a) C-LWA produced in the pelletization process in a rotating pan concrete mixer, b) C-LWA in the cured (hardened) state and c) C-LWA pellet embedded in concrete (cut section). Credit: &lt;i&gt;Journal of Cleaner Production&lt;\/i&gt; (2023). DOI: 10.1016\/j.jclepro.2023.140008\">\n<figure class=\"article-img\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2024\/processing-biochar-int.jpg\" alt=\"Processing biochar into pellets to offset emissions in concrete production\" title=\"a) C-LWA produced in the pelletization process in a rotating pan concrete mixer, b) C-LWA in the cured (hardened) state and c) C-LWA pellet embedded in concrete (cut section). Credit: Journal of Cleaner Production (2023). DOI: 10.1016\/j.jclepro.2023.140008\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                a) C-LWA produced in the pelletization process in a rotating pan concrete mixer, b) C-LWA in the cured (hardened) state and c) C-LWA pellet embedded in concrete (cut section). Credit: <i>Journal of Cleaner Production<\/i> (2023). DOI: 10.1016\/j.jclepro.2023.140008<br \/>\n            <\/figcaption><\/figure>\n<\/div>\n<\/div>\n<p>To achieve the goal of a climate-neutral Switzerland by 2050, strategies and processes with a negative CO<sub>2<\/sub> balance are necessary. These so-called negative emission technologies (NET) are intended to counterbalance the remaining &#8220;hard-to-avoid&#8221; emissions in 2050 and should help ensure that we eventually achieve net zero.<\/p>\n<p>                                                                                                                                    As one of the main emitters, the construction sector has a particular obligation. About 8% of global greenhouse gas emissions are caused by cement production. At the same time, initial efforts are emerging to use the construction sector, with its massive consumption of resources, as a possible carbon sink.<\/p>\n<p>What sounds paradoxical will succeed if we start &#8220;building with CO<sub>2<\/sub>&#8220;\u2014or rather, using carbon to produce building materials and thus removing it from the atmosphere in the long term. For such visions to become reality, a great deal of research is needed\u2014such as is currently being done at Empa&#8217;s Concrete &amp; Asphalt lab. A team led by Pietro Lura is developing a process for integrating biochar into concrete.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Difficulties_due_to_porosity\"><\/span>Difficulties due to porosity<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Biochar is produced by a pyrolytic carbonization process of biomass in the absence of oxygen and consists of a high level of pure carbon\u2014the carbon that the plants have extracted from the atmosphere in the form of CO<sub>2<\/sub> as they grow. While CO<sub>2<\/sub> is emitted when plants are burned, it remains bound in the biochar over the long term.<\/p>\n<p>The first concrete products with integrated biochar are already on the market. However, biochar is often introduced into the concrete untreated, which can lead to difficulties. &#8220;Biochar is very porous and therefore not only absorbs a lot of water, but also expensive admixtures used in concrete production,&#8221; explains Empa researcher Mateusz Wyrzykowski.<\/p>\n<p>&#8220;Moreover, it is difficult to handle and not completely harmless either.&#8221; The fine coal dust is problematic for the respiratory tract and carries a certain risk of explosion.<\/p>\n<p>For these reasons, the researchers propose in a paper that has just been published in the <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0959652623041665?via%3Dihub\"><i>Journal of Cleaner Production<\/i><\/a> the processing of the biochar into pellets. &#8220;Such lightweight aggregates already exist from other materials such as expanded clay or fly ash. The knowhow in handling these materials is available in industry, and this increases the chances that the concept will be put into practice,&#8221; says Wyrzykowski.<\/p>\n<p>                                                                                                        <!-- TechX - News - In-article --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Net_zero_at_20_share\"><\/span>Net zero at 20% share<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To produce the pellets, the team used a concrete mixer with a rotating pan in which they mixed the biochar with water and cement and, as a result of the rotation, obtained small pellets with a diameter of between 4 and 32 millimeters. In turn, they used these pellets to produce normal concrete of strength classes C20\/25 to C30\/37\u2014the classes that are most widely used in civil engineering today.<\/p>\n<p>&#8220;With a proportion of 20% by volume of carbon pellets in the concrete, we achieve net zero emissions,&#8221; says Mateusz Wyrzykowski. That is, the amount of carbon stored offsets all the emissions produced in the production of both the pellets and the concrete. While the limit has probably not yet been reached for normal concrete (density between 2,000 and 2,600 kg\/m<sup>3<\/sup>) with 20% by volume, the negative emission potential is particularly striking for lightweight concrete (density <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>rox. 1,800 kg\/m<sup>3<\/sup>): An admixture of 45% by volume of carbon pellets in the concrete leads to total negative emissions of \u2013290 kg CO<sub>2<\/sub>\/m<sup>3<\/sup>. By comparison, conventional concrete emits around 200 kg CO<sub>2<\/sub>\/m<sup>3<\/sup>.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Carbon_from_the_atmosphere\"><\/span>Carbon from the atmosphere<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For laboratory head Pietro Lura, research in his lab is a crucial contribution to achieving climate targets. He does not see biochar, which has served as a model material in current research, as the most important source of carbon. Rather, he draws attention to the broad concept &#8220;Mining the Atmosphere,&#8221; which several labs at Empa are pursuing: The production of synthetic methane using solar energy, water and CO<sub>2<\/sub> from the atmosphere in sunny regions of the world, and the subsequent pyrolysis of the synthetic gas.<\/p>\n<p>&#8220;This yields hydrogen, which can be used as an energy carrier in industry or mobility, and solid carbon, which we can process into pellets\u2014like biochar\u2014and incorporate into concrete,&#8221; explains Lura.<\/p>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Mateusz Wyrzykowski et al, Cold-bonded biochar-rich lightweight aggregates for net-zero concrete, <i>Journal of Cleaner Production<\/i> (2023). <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1016\/j.jclepro.2023.140008\">DOI: 10.1016\/j.jclepro.2023.140008<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    Swiss Federal Laboratories for Materials <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> and <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">Technology<\/a><br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.empa.ch\/\"><br \/>\n                                                        <svg><use href=\"https:\/\/techx.b-cdn.net\/tmpl\/v2\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/><\/svg><\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                <strong>Citation<\/strong>:<br \/>\n                                                Processing biochar into pellets to offset emissions in concrete production (2024, January 8)<br \/>\n                                                retrieved 8 January 2024<br \/>\n                                                from https:\/\/techxplore.com\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2024-01-biochar-pellets-offset-emissions-concrete.html<\/p>\n<p>                                            This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n                                            part may be reproduced without the written permission. The content is provided for information purposes only.<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMN63nwsw68G3Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\">For forums sites go to <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/forum.buradabiliyorum.com\/\" target=\"_blank\" rel=\"noopener\">Forum.BuradaBiliyorum.Com<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/science\/\" target=\"_blank\" rel=\"noopener\">Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/techxplore.com\/news\/2024-01-biochar-pellets-offset-emissions-concrete.html\" target=\"_blank\" rel=\"noopener\">Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>a) C-LWA produced in the pelletization process in a rotating pan concrete mixer, b) C-LWA in the cured (hardened) state and c) C-LWA pellet embedded in concrete (cut section). Credit: Journal of Cleaner Production (2023). DOI: 10.1016\/j.jclepro.2023.140008 To achieve the goal of a climate-neutral Switzerland by 2050, strategies and processes with a negative CO2 balance&#8230;<\/p>\n","protected":false},"author":1,"featured_media":603963,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2024\/processing-biochar-int.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-603962","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/603962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=603962"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/603962\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/603963"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=603962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=603962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=603962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}