Irish student invents plant-based plastic that degrades microplastics

Eighteen-year-old Arya Satheesh, a high school student from County Donegal, Ireland, has gained international acclaim for inventing "Eco Purge," a groundbreaking plant-based biodegradable plastic aimed at tackling the pervasive issue of microplastic pollution.

Satheesh's innovation goes beyond typical biodegradable materials. Eco Purge is designed to naturally decompose within approximately two weeks under suitable conditions. As it biodegrades, it releases specialized enzymes that actively degrade nearby PET-derived microplastics found in soil and water. This dual action allows Eco Purge to not only disappear after use but also to help mitigate existing plastic pollution.

The inspiration for Eco Purge stemmed from Satheesh's earlier research into microplastic detection. Her previous development of a smart water monitor highlighted the need for solutions, not just identification of contaminants. Coupled with concerns about low global recycling rates, she was driven to create a sustainable alternative to conventional plastics.

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Identifying pollution was not enough. She wanted to create something that could help solve the problem.

One of the significant hurdles in developing Eco Purge was sourcing the specialized enzyme. Satheesh utilized ChatGPT to identify potential suppliers and contacted them directly. Crucial support came from Kevin O'Connor, director of Ireland's National Bioeconomy Research Centre (BiOrbic), who helped procure the necessary enzymes from Denmark and Germany, enabling her research to progress.

For her innovative work, Satheesh earned the European regional title at The Earth Prize 2026, a prestigious global competition for young environmental innovators. In addition to the title, she was awarded $12,500 to advance her prototype. The program also offers mentorship and learning resources to help young inventors transform their ideas into practical solutions. Researchers have lauded Eco Purge as an innovative proof of concept, recognizing its potential to significantly contribute to addressing plastic pollution.

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Researchers have described Eco Purge as an innovative proof of concept.