Investigadores australianos están convirtiendo los posos de café usados en un material que puede añadirse al hormigón para hacerlo más resistente y sostenible, reduciendo potencialmente las emisiones de gases de efecto invernadero.

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Australian researchers are transforming used coffee grounds into a sustainable material that can be added to concrete. This innovative process, developed by RMIT University, involves heating the coffee grounds to over 650 degrees Fahrenheit in an oxygen-free chamber to create a substance called biochar. Biochar can replace up to 15% of sand used in concrete, making it 30% stronger and potentially reducing the use of cement, a highly carbon-intensive material.

Lead researcher Rajiv Royshand estimates that 100% of Australia's coffee waste could be recycled into concrete applications. Coffee production is responsible for around 7% of the world's CO2 emissions, according to the United Nations. The extraction of sand and gravel, which is used extensively in concrete, is often environmentally destructive and the UN reports it is in increasingly short supply.

A test footpath has already been constructed using the coffee-enhanced concrete. The RMIT team is collaborating with several construction and concrete companies and is forming their own biochar company. They are also in talks with large coffee chains like Starbucks to source coffee grounds. Local coffee shop owner Tony Roussos supports the initiative, noting that it could bring down the cost of concrete while benefiting the environment.

Royshand envisions the technology being applied to more than just coffee waste. He anticipates that 60 to 70% of organic waste currently ending up in landfills could be diverted into concrete applications.



Los cafés matinales hacen más verde el hormigón en Australia

Tu taza de café matutina podría ayudar al planeta. Esa es la promesa de una universidad australiana que está transformando los posos de café usados en hormigón más sostenible. Dicen que el proceso podría reducir potencialmente las emisiones de gases de efecto invernadero. Los investigadores de la Universidad RMIT calientan los posos de café a más de 650 grados Fahrenheit. en una cámara sin oxígeno para crear una sustancia llamada biocarbón. Afirman que el biocarbón puede sustituir hasta el 15% de la arena utilizada en el hormigón y convertirlo en un 30% más barato. más fuerte. Podemos aprovechar eso para reducir incluso el contenido de cemento, que es un altamente intensivo en carbono material. Rajiv Royshand es el investigador principal. Prevemos que la totalidad del 100% de los residuos de café en Australia pueden reciclarse en hormigón aplicaciones. La producción de café es responsable de alrededor del 7% de las emisiones mundiales de CO2, según Naciones Unidas. Cada año se extraen más de 55.000 millones de toneladas de arena y grava, sobre todo para fabricar hormigón. Su extracción es a menudo destructiva para el medio ambiente, y la ONU dice que es cada vez más escasa. de suministro. Este sendero se realizó con éxito con hormigón de café. Los investigadores están trabajando con varias empresas de construcción y de hormigón y formando su propia empresa de biocarbón. También están en conversaciones con Starbucks para llevarse sus posos de café. El propietario de una cafetería local, Tony Roussos, dice que él también participaría. Fantástico. Es una idea muy innovadora, bajar el coste del hormigón, y de los materiales. Obviamente, hay un beneficio para el medio ambiente por no utilizar productos químicos agresivos y la sustitución de con posos de café como un producto natural, de fácil acceso, un montón de cafés podría vender sus posos de café, así que al final, es una gran solución. Royshand dice que, con el tiempo, la tecnología podría utilizarse para algo más que el café. En términos del mundo real, nuestro enfoque es que tratamos de transformar todos los residuos orgánicos que acaban en los vertederos para esta aplicación positiva en el hormigón. Prevemos que podremos desviar entre un 60 y un 70% de los vertederos a aplicaciones concretas.

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