{"id":677344,"date":"2025-06-26T11:35:16","date_gmt":"2025-06-26T08:35:16","guid":{"rendered":"https:\/\/buradabiliyorum.com\/en\/shipboard-system-that-uses-limestone-and-seawater-could-cut-co%e2%82%82-emissions-by-half\/"},"modified":"2025-06-26T11:35:16","modified_gmt":"2025-06-26T08:35:16","slug":"shipboard-system-that-uses-limestone-and-seawater-could-cut-co%e2%82%82-emissions-by-half","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/shipboard-system-that-uses-limestone-and-seawater-could-cut-co%e2%82%82-emissions-by-half\/","title":{"rendered":"Shipboard system that uses limestone and seawater could cut CO\u2082 emissions by half"},"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-6a3e2dc707e92\" 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-6a3e2dc707e92\" 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\/shipboard-system-that-uses-limestone-and-seawater-could-cut-co%e2%82%82-emissions-by-half\/#From_lab_to_sea\" >From lab to sea<\/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\/shipboard-system-that-uses-limestone-and-seawater-could-cut-co%e2%82%82-emissions-by-half\/#Bringing_the_technology_to_market\" >Bringing the technology to market<\/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\/2025\/new-technology-may-red.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/new-technology-may-red.jpg\" data-sub-html=\"Schematic illustration of the AWL reactor on a container vessel. Credit: &lt;i&gt;Science Advances&lt;\/i&gt; (2025). DOI: 10.1126\/sciadv.adr7250\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/new-technology-may-red.jpg\" alt=\"New technology may reduce shipping emissions by half\" title=\"Schematic illustration of the AWL reactor on a container vessel. Credit: Science Advances (2025). DOI: 10.1126\/sciadv.adr7250\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Schematic illustration of the AWL reactor on a container vessel. Credit: <i><a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> Advances<\/i> (2025). DOI: 10.1126\/sciadv.adr7250<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Scientists at USC and Caltech, in collaboration with startup company Calcarea, have developed a promising shipboard system that could remove up to half of carbon dioxide emitted from shipping vessels by converting it into an ocean-safe solution.<\/p>\n<p>The breakthrough, described in <a rel=\"nofollow\" target=\"_blank\" href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.adr7250\" target=\"_blank\"><i>Science Advances<\/i><\/a>, describes how the system could reduce carbon emissions from the shipping industry\u2014one of the world&#8217;s most difficult-to-decarbonize sectors.<\/p>\n<p>&#8220;What&#8217;s beautiful about this is how simple it is,&#8221; said William Berelson, the Paxson H. Offield Professor in Coastal and Marine Systems at the USC Dornsife College of Letters, Arts and Sciences and co-corresponding author of the study. &#8220;We&#8217;re speeding up a process the ocean already uses to buffer CO<sub>2<\/sub>\u2014but doing it on a ship, and in a way that can meaningfully reduce emissions at scale.&#8221;<\/p>\n<p>The process mimics a natural chemical reaction in the ocean. As ships move through seawater, CO<sub>2<\/sub> from their exhaust is absorbed into water pumped onboard, making it slightly more acidic. That water is then passed through a bed of limestone, where the acid reacts with the rock to form bicarbonate\u2014a safe, stable compound that exists naturally in seawater. The treated water, now s<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/trip-and-travel\/\" data-internallinksmanager029f6b8e52c=\"10\" title=\"Trip &amp; Travel\" target=\"_blank\" rel=\"noopener\">trip<\/a>ped of CO<sub>2<\/sub>, is then discharged back into the ocean.<\/p>\n<p>&#8220;What&#8217;s most exciting to me is that this started as a pure science question: How does the ocean buffer CO<sub>2<\/sub>?&#8221; Berelson added. &#8220;From there, we realized we might have a real-world solution that could help fight climate change.&#8221;<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/shipboard-system-uses.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/shipboard-system-uses.jpg\" data-sub-html=\"Reactor design and evolution of seawater chemistry during an experiment. Credit: &lt;i&gt;Science Advances&lt;\/i&gt; (2025). DOI: 10.1126\/sciadv.adr7250\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/shipboard-system-uses.jpg\" alt=\"Shipboard system uses limestone and seawater to cut CO\u2082 emissions by half\" title=\"Reactor design and evolution of seawater chemistry during an experiment. Credit: Science Advances (2025). DOI: 10.1126\/sciadv.adr7250\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                Reactor design and evolution of seawater chemistry during an experiment. Credit: <i>Science Advances<\/i> (2025). DOI: 10.1126\/sciadv.adr7250<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>                                                                                                        <!-- TechX - News - In-article --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"From_lab_to_sea\"><\/span>From lab to sea<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Maritime shipping accounts for nearly 3% of global greenhouse gas emissions. Yet current solutions, like low-carbon fuels and electrification, remain expensive or impractical for long-distance voyages.<\/p>\n<p>&#8220;We see our <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>roach as a complementary strategy that could help ships reduce their environmental impact without major design overhauls,&#8221; said Jess Adkins, co-founder and CEO of Calcarea and the Smits Family Professor of Geochemistry and Global Environmental Science at Caltech.<\/p>\n<p>In the lab, the researchers tested key elements of the process, using controlled amounts of seawater, limestone and CO<sub>2<\/sub>. Their experiments aligned closely with theoretical predictions, giving them confidence to scale up their modeling to the size necessary to work on real vessels.<\/p>\n<p>&#8220;We wanted to show that we not only understood the chemistry\u2014we could also predict how much CO<sub>2<\/sub> would be neutralized,&#8221; Berelson said. &#8220;That allowed us to model what this might look like on an actual ship.&#8221;<\/p>\n<p>The study also used sophisticated ocean modeling to examine what would happen when the bicarbonate-rich water is released back into the sea. Simulations tracked a hypothetical ship traveling repeatedly between China and Los Angeles over a 10-year period, discharging treated water along the route. The models showed negligible impact on ocean pH and chemistry\u2014an important validation for the <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">technology<\/a>&#8217;s environmental safety.<\/p>\n<p>The researchers estimate that widespread adoption of the technique could reduce shipping-related CO<sub>2<\/sub> emissions by 50%.<\/p>\n<p>&#8220;This is the kind of scale we need if we&#8217;re going to make a real dent in global emissions,&#8221; Berelson said. &#8220;It&#8217;s not going to happen overnight, but it shows what&#8217;s possible.&#8221;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bringing_the_technology_to_market\"><\/span>Bringing the technology to market<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The academic work is running in parallel with Calcarea, a startup company working to bring the technology to market. The company is in early discussions with commercial shippers and exploring pilot programs that would test the technology on working vessels.<\/p>\n<p>Calcarea previously announced a collaboration with Lomar Shipping&#8217;s corporate venture lab, Lomar Labs, to commercialize and deploy their shipboard carbon capture system.<\/p>\n<p>&#8220;Scalability is built into our design,&#8221; Adkins said. &#8220;We&#8217;re engineering a system that can integrate with existing vessels and be adopted fleetwide. By working directly with industry partners, we&#8217;re accelerating the path from lab to ocean.&#8221;<\/p>\n<p>Berelson, a co-founder and scientific advisor for Calcarea, continues to study the science behind the approach, including reaction rates and long-term impacts on ocean chemistry.<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tSijia Dong et al, Potential of CO<sub>2<\/sub> sequestration through accelerated weathering of limestone on ships, <i>Science Advances<\/i> (2025). <a rel=\"nofollow\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1126\/sciadv.adr7250\" target=\"_blank\">DOI: 10.1126\/sciadv.adr7250<\/a><\/p>\n<\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    University of Southern California<br \/>\n                                                    \t\t\t\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.usc.edu\/\" target=\"_blank\" rel=\"nofollow\"><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<use href=\"https:\/\/techx.b-cdn.net\/tmpl\/v2\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>\n                                                <strong>Citation<\/strong>:<br \/>\n                                                Shipboard system that uses limestone and seawater could cut CO\u2082 emissions by half (2025, June 25)<br \/>\n                                                retrieved 26 June 2025<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>\/2025-06-shipboard-limestone-seawater-emissions.html\n                                            <\/p>\n<p>\n                                            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.\n                                            <\/p>\n<\/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;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" target=\"_blank\" >Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/techxplore.com\/news\/2025-06-shipboard-limestone-seawater-emissions.html\" target=\"_blank\" >Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Schematic illustration of the AWL reactor on a container vessel. Credit: Science Advances (2025). DOI: 10.1126\/sciadv.adr7250 Scientists at USC and Caltech, in collaboration with startup company Calcarea, have developed a promising shipboard system that could remove up to half of carbon dioxide emitted from shipping vessels by converting it into an ocean-safe solution. The breakthrough,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":677345,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/new-technology-may-red.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-677344","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\/677344","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=677344"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/677344\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/677345"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=677344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=677344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=677344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}