Concrete is the most widely used material in the world after water, but its production is the second largest emitter of carbon dioxide (CO2) in the world, responsible for three to five percent of total global carbon emissions.
As reported in CryoGas International last year, cement manufacturers, while committed to reducing their carbon footprint, are often constrained by their assets and chemistry. US start-up Solidia Technologies® and The Linde Group are working on the development and commercialization of a CO2-based concrete curing technology that addresses this problem. (See, “New CO2 – Curing Technology for Concrete,” CryoGas International, May 2015, page 28.)
Approaching the CO2 emissions issue from an entirely different angle is Entsorga West Virginia, which announced in January its first resource recovery facility that will make an alternative fuel for a nearby cement plant. Utilizing Mechanical Biological Treatment (MBT), the state-of-the-art waste-to-solid fuel plant will be located in Martinsburg, West Virginia, and is expected to be operational in early 2017. Entsorga WV is a joint venture between Apple Valley Waste Technologies, LLC., Entsorga USA and Chemtex International.
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