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Lithuanian researchers develop binding material made completely from industrial waste products

By Jesse Schwartz
Published: December 4th, 2018

Researchers at Kaunas University of Technology (KTU) Lithuania have developed a way to produce a high-strength gypsum binding material using only industrial waste products.

Roughly 5 tons of phosphogypsum is generated per ton of phosphoric acid production. Around the world, about 15% of it is recycled as building materials, fertilizers and other products, while the rest is stored near factories, taking up large land areas and sometimes causing environmental contamination.

The KTU researchers have combined phosphogypsum and zeolite, an industrial waste product from oil refineries, to create a “plaster stone” binding material for construction.

“The analogical research focusing on production of plaster from phosphogypsum usually involves using high temperatures or expensive binding materials,” says KTU researcher Dalia Nizeviciene. “For our invention, we use only waste materials from different industries, which can not only be acquired for symbolic price, but also are becoming a useful material for building and other industries, wherever plaster is used,” says Nizeviciene. “Our gypsum stone is stronger than standard, and its production is not only simpler and more efficient but is also adding to the zero-waste industry concept.”

The researchers have applied for a patent of their invention to the State Patent Bureau of Lithuania with help from the KTU National Innovation and Entrepreneurship Centre, and they plan to eventually find a business partner to help commercialize the technology.

Source: EurekAlert!

Posted under: Tech Transfer e-News

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