Researchers at Fraunhofer Institutes IKTS and FEP have created a new method for producing building materials using cyanobacteria, a type of bacteria. This method offers a more environmentally friendly alternative to traditional concrete production by reducing carbon dioxide emissions and potentially capturing it from the atmosphere.
Concrete production is a major contributor to global carbon dioxide emissions. To address this concern, researchers developed a bio-based method that utilizes cyanobacteria’s natural ability to capture carbon dioxide during photosynthesis and create limestone structures.
The new method mimics this natural process. Cyanobacteria are cultured in a nutrient solution and then combined with minerals and fillers like sand. The mixture is molded and cured under specific conditions to create solid structures.
This new method has several potential benefits. It can significantly reduce the construction industry’s carbon footprint by not emitting CO2 during production and even capturing it from the air. Researchers are also exploring the use of recycled materials like construction waste and industrial gasses in the process, promoting a more circular economy. The final product’s properties can be adjusted to create different building materials like insulation, bricks, and mortar, offering a wide range of applications.
While the project is still under development, researchers are optimistic about its potential to create a more sustainable construction industry. They are currently working on scaling up the process and determining the mechanical properties of the final materials.
