Researchers make cement production carbon neutral
US-based researchers have devised a way to make cement production carbon neutral by recycling the waste CO2 emissions for making carbon nanotubes. The nanotubes' production releases oxygen which is then pumped back into cement furnaces, making them burn using lesser fuel. Researchers calculated that for every â¹100 of cement produced, the factory would have â¹60,000 worth of nanotubes to sell.