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Plastic Recycling from Europe Being Dumped in Asian Waters

Up to 31 percent of plastic exported for recycling not recycled at all

by National University of Ireland Galway
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New research from NUI Galway and the University of Limerick has for the first time quantified the volume of plastic from European countries (EU, UK, Switzerland, and Norway) that contributes to ocean littering from exported recycling.
Shutterstock/NUI Galway

New research from National University of Ireland (NUI) Galway and the University of Limerick has for the first time quantified the volume of plastic from European countries (EU, UK, Switzerland, and Norway) that contributes to ocean littering from exported recycling.

While European countries have developed world-leading waste management infrastructure, 46 percent of European-separated plastic waste is exported outside the country of origin. A large share of this plastic is transported thousands of kilometers to countries with poor waste management practices, largely located in Southeast Asia. Once in these countries, a large share of the waste is rejected from recycling streams into overstretched local waste management systems that have been found to contribute significantly to ocean littering.

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This new research, published in the scientific journal Environment International, estimated the best-case, average, and worst-case scenarios of ocean debris pathways from exported recycling in 2017. The results estimated a range between 32,115 - 180,558 tonnes (about 35,401 - 199,031 US tons), or one to seven percent of all exported European polyethylene, which ended up in the ocean. Polyethylene is one of the most common types of plastic in Europe, and the results showed that countries such as the UK, Slovenia, and Italy are exporting a higher share of plastic outside of Europe and see a higher share of their recyclable plastic waste end up as ocean debris.

"The results indicate an important and previously undocumented pathway of plastic debris entering the oceans, which will have considerable environmental and social impacts on marine ecosystems and coastal communities,"  said George Bishop, lead author of the study."

Using detailed international trade data and data on waste management in destination countries, the study modeled the fate of all polyethylene exported for recycling from Europe, accounting for different fates ranging from successful conversion into recycled resins, or ending up as landfill, incineration, or ocean debris.

"Given that such a large share of waste destined for recycling is exported, with poor downstream traceability, this study suggests that 'true' recycling rates may deviate significantly from rates reported by municipalities and countries where the waste originates," explains Dr. David Styles, a lecturer at the University of Limerick and study co-author. "In fact, our study found that up to 31 percent of the exported plastic wasn't actually recycled at all."

The study was part of the Science Foundation Ireland-funded Innovative Energy Technologies for Bioenergy, Biofuels and a Sustainable Irish Bioeconomy: IETSBIO3 led by professor Piet Lens, established professor of new energy technologies at NUI Galway.

Lens added: "To successfully move towards a more circular economy, European municipalities and waste management companies need to be held accountable for the final fate of 'recycled' waste. Our study highlights the lack of available data on plastic waste and the need to consider extended audit trails, or 'on-shoring' of recycling activities as part of emerging regulations around trade in plastic waste."

The authors caution that these findings should not discourage people to recycle as it remains the best waste management treatment, environmentally speaking. However, there is considerable work to be done to improve aspects of these plastic recycling chains, to reduce the 'leakage' of these systems.

- This press release was originally published on the NUI Galway website