And there’s a worldwide market for concrete. Constantz: “In our case, we turn it into limestone.”. According to Blue Planet, the production and distribution of synthetic aggregate for concrete make the operations profitable. Brent Constantz, CEO of building materials company Blue Planet, says he has a good solution: sequestering waste carbon dioxide into manmade limestone. The company has developed technology for capturing CO2 from power plants or other sources. So you might say this is a concrete way to reduce global warming. New processes and scalable systems like theirs are instrumental components of reducing the impact we have on our planet, said investor and advisor Leonardo DiCaprio. Constantz: “And so it can pay for itself. They then use it as a raw material for making synthetic limestone, which can be used to make concrete for roads, bridges, and buildings. A cleantech startup company located in Los Gatos, California (CA), Blue Planet Systems is developing technology, products, and services related to economically sustainable carbon capture and mineralization, whereby carbon dioxide (CO2) is permanently sequestered in building materials for beneficial reuse, specifically as aggregate for concrete. Reporting credit: Sarah Kennedy/ChavoBart Digital Media. Energy usage: According to Blue Planet, this is a low cost and low energy carbon capture method. The Blue Planet System directly converts CO2 to carbonate for mineralization as a synthetic limestone (graphic courtesy Blue Planet Systems). In the United States (US), Blue Planet Systems Corporation, a Silicon Valley company that has developed proprietary carbon capture and mineralization (CCM) system that it says permanently removes carbon dioxide (CO2), is economically viable and can be deployed at gigatonne (GT) scale. He says turning carbon into a mineral is a permanent way to keep it out of the atmosphere. Blue Planet Systems Corporation, a Silicon Valley company that has developed proprietary carbon capture and utilization (CCU) system that permanently removes carbon dioxide (CO2), is economically viable and can be deployed at gigatonne (GT) scale. The process also creates upcycled concrete aggregate as a by-product, reducing the need to further mine the environment and consume aggregates. In the process, limestone forms – calcium carbonate. Most carbon reduction schemes are not permanent and instead allow the captured CO2 to re-enter the atmosphere at some point. New technologies are one of our greatest tools in reversing course on our continued path of climate change. The plants can be financed, owned, and operated under well-established project financing structures without subsidies. Blue Planet’s first plant is being constructed in Pittsburgh, CA adjacent to a natural gas-fired power plant and the Sacramento Delta, for barged material transport of raw materials and finished goods. : CO2 sources include flue gases from bioenergy plants, natural gas and coal-fired power plants, steel mills, cement plants, and refineries, as well as directly from the atmosphere – direct air capture (DAC). The Blue Planet process also creates upcycled concrete aggregate as a by-product, reducing the need to mine limestone reserves. With Blue Planet's patented solution every ton of carbon dioxide can be permanently captured to produce about 2 tons of calcium carbonate used in construction materials for roads and buildings. Sign up for Bioenergy International’s newsletter for free, Bioenergy International, Kammakargatan 22, SE-111 40, Stockholm. The company has developed technology for capturing CO2 from power plants or other sources. Concrete testing showed that Blue Planet’s concrete met all necessary specifications. Create an account to be able to save your selection of topics. “If replicated globally in 5,000 cities, just this one small plant can take out five-and-a-half billion tons of CO2.” The rock market represents one of the largest potential sinks for CO2 at over 50 GT annually. Your selection will be saved to your account and available every time you login to your different devices; computer, tablet or smartphone. Constantz said a plant Blue Planet is building in San Francisco will manufacture synthetic limestone aggregate with the potential to eliminate about 11 million tons of CO2 a year. Photographs show the placement of Blue Planet’s concrete at SFO. Blue Planet concrete has already been incorporated at Terminal 1 at San Francisco International Airport (SFO), establishing a model for cost-neutral public procurement of low carbon building materials for carbon mitigation. Brent Constantz is serial Silicon Valley entrepreneur who founded and led as CEO: Norian Corporation 1987- 1998, Corazon Technologies 1998- 2002, Skeletal Kinetics 2002-2007, Calera Corporation 2007 -2010, DeepWater Desal 2011-date, and Blue Planet 2012-date. Instead, the synthetic limestone rock produced is distributed to concrete plants for incorporation in concrete where the CO2 is stored permanently. Making concrete this way also cuts back on the need to mine and transport natural limestone, so it reduces the concrete industry’s own environmental impact. On the left is a dolomite formation from the Alps while on the right limestone forms a bridge that juts out from a side of the Grand Canyon. According to Blue Planet, its proprietary process creates synthetic limestone (CaCO3) sand and gravel that can be used to make carbon neutral and carbon negative concrete, with the same structural integrity of conventional concrete. Many companies are researching methods to capture some of that CO2 and store it in a safe way. © 2020 Yale Climate Connections | Created by Constructive, 01 The US$10 million round of financing was comprised of leaders dedicated to addressing climate change (photo courtesy Blue Planet Systems).