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novacem
A carbon negative cement solution En CO2-negativ cementløsning
CATEGORY: WORK
ENG Cement is responsible for approximately 5% of manmade CO2. Production of one ton of Portland cement —the industry standard—typically emits 800 kg of CO2. Emissions are driven by the processing of limestone (carbonate) raw materials and use of fossil fuel energy. For every ton of Portland cement substituted by Novacem, CO2 emissions will be reduced by up to 850 kg. Novacem is carbon negative cement based on magnesium oxide manufactured from magnesium silicates, of which more than 10,000 billion tons exist worldwide. No carbon emissions are released from the raw material by leaving limestone and its stored carbon in the ground. Additionally, low carbon fuel such as biomass can be used to drive production, and manufacture includes the creation of magnesium carbonates which absorb CO2. Overall, more CO2 is absorbed than emitted during cement production. Novacem cement is currently being produced on a pilot level in London as part of a testing and development program. The intent is to commission a semi-commercial plant during 2011 to support development of commercial applications for the cement. The cement is not yet available for purchase, but Novacem expects it to be in full-scale production from 2014-15. Novacem is a transformational solution to cement CO2 emissions and will empower societies to choose more sustainable constructions as they develop. DK Cementproduktion står for ca. 5% af den menneskeskabte CO2-udledning. Produktionen af et ton Portland-cement, der er standarden i industrien, udsender typisk 800 kg CO2. Udledningen opstår, når kalksten (karbonat) behandles og ved brugen af fossile brændstoffer. For hvert ton Portland-cement, der udskiftes med Novacem, reduceres CO2-udledingen med op til 850 kg. Novacem er CO2-negativ cement baseret på magnesiumoxid fremstillet af magnesiumsilikat, som der på verdensplan findes over 10.000 milliarder ton af. Til produktionen skabes der magnesiumcarbonater, der absorberer CO2, og overordnet set absorberes der mere CO2 under cementproduktionen, end der udsendes, og derfor er produktet CO2-negativt. Novacem-cement bliver i dag produceret på forsøgsbasis i London som en del af et test- og udviklingsprogram, og formålet er at opføre en delvis kommerciel fabrik i løbet af 2011 til at støtte udviklingen af kommercielle anvendelser af cementen. Det er endnu ikke muligt at købe cementen, men Novacem forventer, at cementen kan lanceres i 2014-15. Novacem er en nyskabende løsning på udfordringerne ved CO2-udledning og vil give os mulighed for at vælge mere bæredygtige konstruktionsformer fremover.
Novacem Design: Sandeep Rana (India), Nicholas Duggan (United Kingdom), Daniel Bowden (United Kingdom), Dr. Diego Martinez-Velandia (Columbia), Juan Munoz (Spain), Dr. Radim Skapa (Czech Republic), William Mora (Venezuela), John Chandiyamba (Malawi), Gu Xiaotin (China), Syed Ali (Bangladesh), Dr. Richelieu Barranco (Columbia), Lucy King (United Kingdom), Dr. Hai Xiang Lee (China), Claudia Franco (Mexico), Dr. John Prendergast (Ireland), Howard Simons (United Kingdom), Stuart Evans (United Kingdom), Dr. Nikolaos Vlasopoulos (Greece), David Walkerdine (United Kingdom) & Dr. Amutha Devaraj (India), 2010