CSCT key player in £2.6 million project to examine environmental impacts of biodegradable plastics
The funding is part of a four-year NERC-funded collaborative project that brings together researchers from the University of Plymouth and the University of Bath
Biodegradable packaging and products are seen by many as part of the solution to the global plastics crisis. However, until now, there has been very little research examining their precise fate and impact in the open environment.
To address this, a team of UK scientists, including researchers at the CSCT, University of Bath, has been awarded £2.6 million to conduct a four-year project assessing how these materials break down and, in turn, whether the plastics or their breakdown products affect species both on land and in the marine environment.
The project, named BIO-PLASTIC-RISK, is being supported by a grant from the Natural Environment Research Council (NERC), part of UK Research and Innovation (UKRI). Led by the University of Plymouth, this collaborative project will include a team of researchers from the renowned International Marine Litter Research Unit, the CSCT at the University of Bath, and the Plymouth Marine Laboratory.
The project brings together a team of marine and terrestrial biologists, material and polymer scientists, and ecotoxicologists, and will expand on extensive previous research by the partners into the causes and effects of microplastic pollution.
Among its key objectives will be to develop a better understanding of biodegradable materials, how they react on entering the environment, and how their characteristics can be tailored to minimise any potential risks. It will also explore any effects the chemicals added to the plastics might have on organisms, how that, in turn, affects wider ecosystems, and whether certain parts of our environment are more at risk than others.
In addition to the academic involvement, the project partners include representatives from the global textiles and packaging industry, and an advisory group representing Government agencies, biodegradable bioplastics producers, commercial users, water authorities and NGOs.
Researchers believe the project will ultimately also be of interest to sustainability experts and social scientists, helping to guide understanding about any positive effects biodegradable materials can have for the circular economy and to inform behaviour change initiatives in relation to packaging choices and disposal.
Dr Antoine Buchard, Royal Society University Research Fellow and Reader at the CSCT, is leading the research team at the University of Bath. He said: “We use plastics because they can do things that other materials cannot, but because of misguided utilisation, their environmental impact has been overshadowing their benefits. The solution is not to ban plastics altogether: there is rather an opportunity to redesign plastics and how we use them.
“The reliance of plastics on dwindling fossil fuels is real, and bioplastics – those derived from renewable feedstocks such as plants – are part of the solution to make plastics sustainable.
“With circular economy concepts in mind, while recycling and reuse of bioplastics need to be maximised, we cannot ignore that some will leak into the environment, in particular the seas, so it is important to understand how they can be designed, at the molecular level, so they don’t have any negative impact on the environment while remaining fit for purpose.
“Together with Professors Matthew Jones and Matthew Davidson, we are delighted to have the opportunity to work on this topic with the University of Plymouth and Plymouth Marine Laboratory, who are world-leading experts in plastic marine pollution.”
Professor Matthew Davidson, Whorrod Professor of Sustainable Chemical Technologies and Director of the CSCT, said: “Within the Centre for Sustainable and Circular Technologies at Bath, a large multidisciplinary team of scientists and engineers is already working with many academic and industrial partners to address the research challenges of sustainable plastics, including the design of new bioplastics, and we look forward to further enhancing our research and its impact through this new project and new collaborations.”
Professor Pennie Lindeque, Head of Science for Marine Ecology and Biodiversity at Plymouth Marine Laboratory (PML), said: “Biodegradable materials have the potential to provide an alternative to traditional plastics, thereby helping to reduce the impacts of plastic waste. However, we must be sure that such materials – biodegradable bioplastics (BBPs) – and the chemicals they contain do, in fact, demonstrate little or no impact on organisms and ecosystems.
“At PML, we will contribute to this project by establishing the potential toxicity of BBP fragments and chemical additives, as well as determining the interaction of BBPs with ecological and biogeochemical process, in the marine environment.”
Professor Richard Thompson OBE FRS, Head of the International Marine Litter Research Unit at the University of Plymouth, is Principal Investigator on the project. His team previously coordinated research which showed that biodegradable bags can hold a full load of shopping three years after being discarded in the environment.
He said: “This is a truly ground-breaking project. For years, biodegradable materials – including plant-based bioplastics – have been highlighted for their potential to reduce the environmental impact of packaging waste.
“However, there hasn’t been detailed research to identify precisely how that might be achieved.
“Through this project, we hope to establish, in the open environment as opposed to managed waste systems, what works and what doesn’t, in terms of the materials’ characteristics and effects.
“But we can also explore how best to bring about the changes required to move from our throwaway society and help maximise the benefits of plastics without the current levels of largely unintended environmental and economic impacts.”
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