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Researchers at the University of Stuttgart have used microbial processes to produce environmentally friendly bio-concrete from urine as part of a “wastewater-bio-concrete-fertilizer” value chain. With the project extension granted by the Baden-Württemberg Ministry of Science, Research, and the Arts, the focus now shifts to product optimization and practical testing.

Concrete is booming. Around 4 billion tons of cement are processed into concrete and used worldwide every year. With serious consequences for the environment.

“Conventional cement is typically fired at temperatures around 1,450 degrees. This consumes a lot of energy and releases large quantities of greenhouse gases,” says Professor Lucio Blandini, Head of the Institute for Lightweight Structures and Conceptual Design (ILEK) at the University of Stuttgart.

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