Household waste fuels the production of Cemex UK cement
Non-recyclable material from household waste is being used to manufacture cement.
Cemex UK, suppliers of cement, aggregates and ready-mix concrete, are using climafuel in place of fossil fuels to heat the kilns in the production of cement.
Climafuel has half the carbon footprint of coke and is made up of 50 per cent biomass. During extensive trials, the use of 30 per cent climafuel as a substitute fuel reduced nitrous oxide emissions by 30 per cent. Additionally, Cemex’s current alternative fuel substitution rates are more than double the UK cement industry average.
Cemex sustainability director Andrew Spencer said: “Not only is it the fuel with the highest biomass, it also diverts waste from landfill that can be used for little else. It is currently the most sustainable fuel option.”
Household and commercial waste is used in producing climafuel. It is treated at a mechanical biological treatment plant where the biodegradable waste is removed to produce a solid, clean and non-hazardous fuel or compost.
Spencer added: “There has certainly been a lot of customer interest in climafuel, especially when they find that it reduces their company’s emissions.”
In addition to climafuel, Cemex also burn a secondary liquid fuel - which is made up from non-recyclable liquid wastes - and it burns shredded tyres to further replace fossil fuels in the cement making process.
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