Portuguese 
English 
Spanish 
4 min of reading 
0 comments 
Researchers From Spain And Italy Create Sustainable Asphalt By Incorporating Recycled Cigarette Butts, Reducing Pollution, Emissions And Costs In Road Construction.
One of the most common and polluting waste materials on the planet may soon gain an unexpected and innovative function. European researchers have found a way to transform cigarette butts into a useful resource, creating a more durable, sustainable, and less polluting asphalt for cities.
The pollution caused by cigarette butts is one of the major environmental challenges today. These waste materials are toxic, accumulate in streets, rivers, and beaches, and take many years to decompose.
With this in mind, researchers from the University of Granada, in Spain, and the University of Bologna, in Italy, have developed an innovative technique.
-
Crisis at Samsung heats up in South Korea and threatens to turn a bonus dispute into a global headache for the semiconductor market
-
780,000-year-old charcoal found in Israel reveals how early humans used driftwood to keep the fire burning and survive on the shores of an ancient lake
-
China launches Tianzhou 10 with nearly 7 tons of supplies, docks the spacecraft to the Tiangong space station in just 5 hours, and reinforces its continuous presence in orbit.
-
2.6 million-year-old jaw fossil found in the Afar desert reveals that Paranthropus lived 1,000 km further north than previously known and changes scientists’ view of the robust cousins of humans.
They are recycling cigarette butts to create a type of asphalt that is more durable, flexible, and less polluting. The idea is to give a new purpose to one of the most common waste materials on the planet.
The estimate is that by 2025, around 9 trillion cigarette butts will be produced annually worldwide.
The problem doesn’t stop there. With the increase in the consumption of electronic cigarettes, especially among young people aged 14 to 30, the volume of waste is growing even further.
The environmental impact is severe, as the decomposition of a single butt can take up to 15 years.
Moreover, these waste materials contain toxic substances such as nicotine, tar, and heavy metals, which contaminate the soil and watercourses.
Turning Waste Into Infrastructure
The project from the Spanish-Italian universities focuses on the unburned part of the butts, which is rich in cellulose fibers and biodegradable plastics like PLA.
These materials are processed and transformed into small pellets, which are then incorporated into the asphalt mixture.
The burned part, composed of ash and combustion residues, is discarded since it has little technical value for the process.
The production of these pellets involves an industrial method that combines Fischer-Tropsch waxes, pressing, heating, and cold cutting.
The result is a material that, when mixed with hot asphalt, releases fibers that reinforce the pavement structure. This increases the strength of the roads and helps prevent cracks caused by heavy traffic or temperature variations.
Benefits Beyond Recycling
The benefits of the technique are not limited to the reuse of a problematic waste material. Tests conducted at the Building Engineering Laboratory of the University of Granada (LabIC.UGR) have shown that the new asphalt exhibits greater resistance to crack formation. This means more durable roads that require less constant maintenance.
Another highlight is the reduction of the temperature required to manufacture the asphalt.
The waxes used decrease the viscosity of the bitumen, allowing for a production process that consumes less energy. This detail also reduces the emission of polluting gases during the construction of the roads, something essential in an industry known for being highly polluting.
Additionally, the technique allows for an increase in the amount of recycled material in the asphalt composition, combining cigarette butts with scraps from old pavements.
The final quality of the product is not compromised, which can lead to savings and environmental benefits.
Real Applications And Near Future
The project has already attracted the attention of public bodies and the transportation sector. Some European municipalities are studying the use of the technique in pilot projects for the recovery of streets and avenues.
The initiative aligns with the goals of the European Union, which relies on the European Green Deal and the Circular Economy Strategy as tools to reduce waste and improve urban sustainability.
Another possibility under analysis is the use of the pellets in high-strength urban pavements, bike paths, and even airport runways.
These areas require superior quality pavements, and the mix with cigarette butts may meet the technical requirements.
Potential And Challenges
The technology points to a shift in mindset regarding the disposal of waste.
Transforming butts into a valuable resource helps combat pollution and reduce the carbon footprint of road construction.
If applied on a large scale, the solution could eliminate millions of cigarette butts from the environment every year.
The next step is to expand the production of pellets and integrate them into public bidding for roadworks.
It is also crucial to invest in awareness campaigns to encourage the selective collection of butts, ensuring sufficient raw material for the process.
The research from the universities of Granada and Bologna shows that creative and technological solutions can transform environmental problems into opportunities.
With the support of public policies and society, the use of toxic waste in asphalt production can be an effective alternative for a more sustainable future.
-
1 person reacted to this.