Laboratory tests reveal biochar’s potential to eliminate microplastics from road runoff, showcasing an innovative approach to environmental protection.
- Swansea University’s pioneering trials indicate biochar’s efficacy in removing microplastics without trace in road runoff.
- Road runoff, containing harmful pollutants like lead and microplastics, poses significant environmental risks.
- The biochar process holds promise for large-scale implementation in highway drainage systems to combat microplastic pollution.
- Kier’s A417 project will test biochar’s long-term effectiveness in a real-world setting.
Laboratory tests conducted by Swansea University have shown that biochar, a plant-based material, can effectively remove microplastics from road runoff. This groundbreaking research represents the first known trials to confirm biochar’s ability to address this form of pollution, as no traces of microplastics were detected in the runoff after treatment.
Microplastics, which enter waterways through road dust from sources like tyre wear and road pavements, contribute significantly to water pollution. These pollutants are known to pose risks to ecosystems and human health by entering the food chain and transmitting harmful pathogens.
The material has been noted for its ability to not only capture microplastics but also to reduce carbon emissions, suggesting dual environmental benefits. According to Mark Smith, managing director at TerrAffix, the collaboration with Kier aims to apply this research on a larger scale across infrastructure sectors worldwide.
The upcoming application of biochar in Kier’s A417 project marks an important step in assessing the material’s long-term effectiveness in real-world conditions. This trial will provide valuable data on whether biochar maintains its pollutant-filtering capabilities over time, which remains an open question crucial to its broader adoption.
Kier’s head of environment & sustainability, Matt Tompsett, highlighted the significance of addressing microplastics in highway drainage systems. He noted the absence of prior studies on using biochar for this purpose, emphasising its potential for wide-scale environmental impact.
The pioneering work with biochar represents a significant stride towards addressing the pervasive issue of microplastic pollution.
