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Comment Sustainability

Waste-based ceramics improve energy-storage economics

By Mary Page Bailey |

Ceramic materials’ high heat resistance makes them a promising media for thermal energy storage, but their high costs have inhibited their widespread use for this application. Now, a new technology offered by Seramic Materials Ltd. (Masdar City, U.A.E.; www.seramic.eco) can efficiently convert a wide range of industrial solid waste materials, such as steel slag and incinerator ash, into ceramic products used for energy storage and construction. “On average, our products are up to 50% cheaper than conventional ceramics, and the carbon footprint can be reduced by up to 60% when compared to materials like alumina, which require energy-intensive extraction and transport of bauxite raw materials. We replace those with locally generated wastes that are always available,” says Nicolas Calvet, CEO of Seramic Materials. The key to Seramic Materials’ technology is a patented method of mixing different waste streams and fine-tuning process characteristics to yield a specific end-product formulation. “There is great variability in the waste composition, based on industrial source and geography, meaning that we have to readjust our process and formulation and tune the firing temperature before launching production,” explains Calvet.…
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