We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Degradation of Microplastics by Microbial in Combination with a Micromotor
Summary
Scientists developed a new approach combining tiny self-propelled motors with bacteria to speed up microplastic degradation, achieving faster breakdown than biological methods alone. The micromotors help break plastic surfaces into smaller pieces that bacteria can then digest more efficiently. While still in early stages, this technology could offer a more effective and environmentally friendly way to clean up microplastic pollution compared to traditional chemical methods.
Microplastics, known for their high durability, are pervasive in the environment and pose potential risks to human health via the food chain. Traditional physical and chemical degradation methods often release harmful gases and cause secondary pollution. While biodegradation is a low-carbon, ecofriendly alternative, its slow degradation remains a challenge. Research demonstrates that integrating physicochemical treatments with biological methods can enhance the efficiency of microplastic degradation; yet, major improvements are still needed. Using industrial waste fly ash and g-C3N4 as raw materials, we successfully fabricated MnO2/g-C3N4/fly ash (MCNF) micromotors with Fenton reaction and self-propulsion capabilities through calcination and multilayer self-assembly. Notably, these micromotors do not inhibit microbial growth. Pretreatment of polystyrene (PS) with MCNF micromotors achieved a biodegradation rate of 60% within 24 days, while direct addition of MCNF micromotors enabled polyethylene (PE) degradation to reach 66% within 50 days. Compared to biodegradation alone, this combined approach increased the degradation rates of PS and PE by 40 and 24%, respectively. These findings provide a foundation for effective microplastic degradation and highlight the potential of repurposing waste resources.