From the Sector

05.01.2024

Research to reduce shed of microplastics during laundering

A collaboration between Deakin University researchers and Australia’s largest commercial linen supplier Simba Global is tackling a critical global issue, the spread of harmful microplastics through our laundry.

Clothing and textiles are estimated to generate up to 35 per cent of the microplastics found in the world’s oceans, making them one of the biggest contributors. But there is still a lot to be learnt about the characteristics of these microplastics and exactly how and why they are generated.

Researchers at the ARC Research Hub for Future Fibres in Deakin’s Institute for Frontier Materials (IFM) have teamed up with Simba Global, a global textile manufacturing and supply company, to better understand the extent and type of microplastics shed when their products are laundered. Simba Global wants to lead the charge to reduce the environmental impact of textiles.

Lead scientist IFM Associate Professor Maryam Naebe said working with an industry partner on the scale of Simba Global meant the research could have a huge real-world impact.

Simba Global is the major linen supplier to Australia’s hospitals, hotels and mining camps, resulting in 950,000 tonnes of textile products – including bedsheets, bath towels, scrubs and much more – going through the commercial laundering process each year. It also supplies international markets in New Zealand, Singapore and the US.

“As part of our research, we will investigate potential solutions including the pre-treatment of textiles to reduce the shedding of microplastics, or even increasing the size of the plastics that break down so they can be better captured and removed by filtration during the laundering process,” Associate Professor Naebe said.

“Microplastics are now ubiquitous in the environment, they’re in the air we breathe, the food we eat and the earth we walk on. The magnitude of the problem is bigger than previously thought.

“Of serious concern is the mounting evidence that microplastics are having a negative impact on human and animal health. There are not just physical, but chemical and biological impacts.”

Associate Professor Naebe’s team have taken the first steps in the project, analysing wastewater samples from commercial laundries with high-powered electron microscopes in their Geelong laboratory, part of the largest fibres and textiles research facility in Australia.

The team recently presented a new scientific paper at the Association of Universities for Textiles (AUTEX) Conference 2023, which started the important process of formally categorising these types of microplastics, as well as developing standard terminology and testing methods.

“Because our understanding of microplastics is still in its infancy, we needed to start right at the beginning,” Associate Professor Naebe said.

“We need to have a standard definition of what is a microplastic. Up to this point that has been lacking, which makes it difficult to compare and incorporate other studies in this area.

“We are now developing a systematic method for sampling and identifying microplastics in laundry wastewater. It has been tricky to measure the different sizes, but this is important information to have. For example, there are studies that suggest some sizes of microplastics are causing more issues in certain animals.

“The next step will be establishing an essential method to prevent the release of microplastics from textile laundering. This may involve a coating on the surface of the textile or better ways to collect the waste during the washing process.”

Simba Global Executive Chair Hiten Somaia said the company had a strong focus on sustainability, driven by the business’ purpose statement.

“We are proud to partner with Deakin University in what is the first significant research into textile microplastic pollution in Australia. What we are most excited about is sharing the results of this research with all other textile markets in Australia – including clothing – and putting an end to microplastic pollution from textiles.”

More information:
microplastic laundering Deakin University Australia linen Simba Global

Source:

Deakin University

DNFI: Microplastic pollution is a global challenge

Microplastic pollution is a global challenge across many industries and sectors – one of critical importance being textiles.

A 2021 study by the California Ocean Science Trust and a group of interdisciplinary scientists acknowledges that microfibres from textiles are among the most common microplastic materials found in the marine environment. Every time synthetic clothes are manufactured, worn, washed, or disposed of, they release microplastics into terrestrial and marine environments, including human food chains. Synthetic fibres represent over two-thirds (69%) of all materials used in textiles, a proportion that is expected to rise to 73% by 2030. The production of synthetic fibres has fuelled a 40-year trend of increased per capita clothing consumption.

Global textile consumption has become:

Microplastic pollution is a global challenge across many industries and sectors – one of critical importance being textiles.

Global textile consumption has become:

more reliant on non-renewable resources,
less biodegradable, and
increasingly prone to releasing microplastics.

The increased consumption is also discretionary, driven by consumer desire and remains unchecked. Thus, the long-term trend in the textile industry parallels the intentional addition of microplastics to products such as cosmetics. The contrast is that the European Chemicals Agency (ECHA) has recommended such intentional additions be restricted, whereas the over-consumption of synthetic fibres continues unchecked. One way for the EU to account for and mitigate microplastic pollution is through an EU-backed methodology measuring and reporting microplastic emissions, so that consumers and procurement officers have the information needed to minimise microplastic pollution resulting from their purchasing decisions.

There is a critical opportunity to address microplastic pollution in the fashion textile industry through the EU Product Environmental Footprint (PEF) methodology. To meet the environmental objectives of the Circular Economy Action Plan, the EU is proposing that companies substantiate their products’ environmental credentials using this harmonised methodology. However, microplastic pollution is not accounted for in the PEF methodology. This omission has the effect of assigning a zero score to microplastic pollution and would undermine the efforts of the European Green Deal, which aim “to address the unintentional release of microplastics in the environment.”

The incorporation of microplastic pollution as an indicator would increase the legitimacy of the PEF method as well as better inform consumer purchasing decisions, especially as the European Green Deal seeks to “further develop and harmonise methods for measuring unintentionally released microplastics, especially from tyres and textiles, and delivering harmonised data on microplastics concentrations in seawater.”

Whilst we continue to learn about the damage of microplastics and there is new knowledge emerging on the toxic impacts along the food chain, there is sufficient information on the rate of microplastic leakage into the environment to implement a basic, inventory level indicator in the PEF now. This is consistent with the recommendations of a review of microplastic pollution originating from the life cycle of apparel and home textiles. There are precedents in PEF for basic level (e.g., ‘resource use, fossils’) and largely untested (e.g. land occupation and toxicity indicators) indicators, and therefore an opportunity for the EU to promote research and development in the measurement and modelling of microplastic pollution by including such emissions in the PEF methodology. For such an indicator, the long and complex supply chains of the apparel and footwear industry would be a test case with high-impact and a global reach.

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Research to reduce shed of microplastics during laundering

DNFI: Microplastic pollution is a global challenge