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Low carbon cement from Castle

Major investment in production facilities has enabled Castle Cement to become the UK’s lowest emitter of carbon dioxide per tonne of cement, say the company, at a level 5% better than the UK industry average.
The company have also greatly increased the use of waste material as both kiln fuel and as raw material and has reduced emissions of sulphur dioxide, oxides of nitrogen and dust.

Waste material currently accounts for about 40% of the total kiln fuel used by the company. This means more than 412,000 tonnes of material that would have been incinerated or sent to landfill was re-used – 130kg of waste for every tone of cement produced. Plus, says md Mike Eberlin, the company intends to increase this to 60% in 2008. The UK average in 2005 was 15%.

Mr Eberlin point out that, “All this means the overall environmental impact of one tonne of Castle Cement is about 50% of the UK average.”

About Fiona Russell-Horne

Group Managing Editor across the BMJ portfolio.

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