The process captures carbon dioxide emissions from bioenergy, natural gas and coal-fired power plants, steel mills, cement plants and … Instead, the synthetic limestone rock produced is distributed to concrete plants for incorporation in concrete, where the carbon dioxide is stored permanently. 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 current approach to lowing this carbon footprint is reducing the amount of portland cement in the mix, usually with an SCM (supplementary cementitious material like fly ash). New processes and scalable systems like theirs are instrumental components of reducing the impact we have on our planet.”. Precise values are determined applying LifeCycle Carbon Analyses (LCA), that incorporate the auxiliary load carbon footprint of Blue Planet’s processes and transportation at specific plant locations and CO2 emission industry-specific types. Most carbon reduction schemes are not permanent, and instead allow the captured carbon dioxide to re-enter the atmosphere at some point. A $10 million funding round positions Blue Planet to advance a carbon capture and utilization system netting concrete-grade synthetic limestone. Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs.Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO 3).A closely related rock is dolomite, which contains a high percentage of the mineral dolomite, CaMg(CO 3) 2. Brent Constantz, CEO of building materials company Blue Planet, says he has a good solution: sequestering waste carbon dioxide into manmade limestone. As a result Blue Planet’s capture method is extremely efficient, and results in a lower cost than traditional methods of CO2 capture. Blue Planet is developing projects both at sources of carbon dioxide like industrial plants, and utilizing it’s carbon-sequestered aggregates in concrete projects. While our Upcycled Aggregate does not directly sequester CO2, it offers significant benefit compared to virgin aggregate by adding recycled content value, and the avoidance of CO2 related to mining and transportation. (Spoiler alert: It's way more than you think.) The coating consists of synthetic limestone [CaCO3] crystallized on the surface of recycled aggregate, giving it a smoothened surface finish. David Attenborough returns to the world's oceans in this sequel to the acclaimed documentary filming rare and unusual creatures of the deep, as well as documenting the problems our oceans face. Upcycled Aggregate is a by-product of demolished and returned concrete that has been through a calcium extraction process for Blue Planet’s carbon dioxide sequestered limestone. The process also creates upcycled concrete aggregate as a by-product, reducing the need to mine and consume aggregates. Blue Planet Process is Similar to Ooid Formation in Nature. One approach to lowering the CarbonStar rating for a cubic yard of concrete is to replace traditional aggregate with Blue Planet aggregate. If a cubic yard of concrete uses 600 lbs of cement, its CarbonStar rating is 600. Blue Planet then converts diluted carbon dioxide captured from the gas streams to carbonate for mineralization as a synthetic limestone. Rather than have CO2 excess gas from industry be let into the air, it’s captured from the air or industrial exhaust and then turned into a carbonate in solution. Blue Planet to mineralize carbon into synthetic limestone ; Projects . carbon footprint of the portland cement in the mix doesn’t come into the calculation. Blue Planet Nutrients, The Professional's Choice. The transportation and product delivery infrastructure for delivering Blue Planet’s carbon sequestered aggregate is already in place in every country and at every site in the world that is producing concrete, asphalt and road base. Blue Planet’s proprietary process creates synthetic limestone sand and gravel that can be used to make carbon neutral and carbon negative concrete, with the same structural integrity of conventional concrete. 50 billion tons for limestone contains 22 billion tons of CO2. Blue Planet’s first plant is being constructed in  California, adjacent to a natural gas-fired power plant and the Sacramento Delta, for barged material transport of raw materials and finished goods.


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