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The contribution of washing processes of synthetic clothes to microplastic pollution

Updated : October 2020

Stakeholders

  • Textile industry sustainability professionals
  • Textile laundry and maintenance professionals
Microplastic pollution caused by washing processes of synthetic textiles has recently been assessed as the main source of primary microplastics in the oceans. Therefore, understanding the effective contribution of the washing process of synthetic clothes to this environmental problem, is of importance. In this study, wash trials at real scale were performed on commercial clothes by using a household washing machine in order to gain reliable data about the release of microplastics, and to identify possible influences of textile characteristics on the release. The wastewater was collected and filtered through subsequent filters with decreasing porosity, and the amount and dimensions of microfibres were determined. Microfibre release was analysed in relation to the nature and characteristics of the washed clothes. Results showed that microfibres released during washing range from 124 to 308?mg for kg of washed fabric depending from the type of washed garment. Some textile characteristics, such as the type of fibres constituting the yarns and their twist, influenced the release of microfibres during washing. A great amount of microfibres of cellulosic nature was also released during washing of clothes made with a blend of polyester/cellulose. Finally the most abundant fraction of microfibres shed was retained by filters with pore size of 60?µm, presenting an average length of 360–660 ?m and an average diameter of 12–16 ?m, indicating dimensions that could pass through wastewater treatment plants and pose a threat for marine organisms.

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Topics

Microplastic pollution caused by synthetic textile washing

Influences of textile characteristics on microplastic release

Reliable quantitative data about microplastic release during washing

Reduction of microplastic release through optimal textile designs

Chemical composition of the microfibres

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  1. The contribution of washing processes of synthetic clothes to microplastic pollution
Geography
| Global
Year

2019

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