Science in and with society: insights into synthetic microfibre emissions from textiles with citizen scientists

The release of synthetic microfibers during washing of textiles is a major contributor to the emissions of microplastics to the environment. However, mechanisms driving microfibre emissions are poorly understood and little is known about the willingness of individuals to adopt pollution-reducing measures. Existing studies on the impact of textile properties or washing conditions on microfibre release are limited by non-realistic laboratory set-ups or case-by-case assessments and do not include behavioral dimensions. Here we present in-situ research on washing practices and related microfibre release through citizen science, which allows for fine-grained data collection in real-life settings. Different microfibre collection methods, ranging from washing bags and washing machine filters to stickers (for data collection with children) were tested and employed in collaboration with citizen scientists across the Netherlands. In addition to the microfibres, participants reported data on textile characteristics, washing conditions, behaviors, and pro-environmental attitudes. The outcomes of a first extended pilot study with 100 participants yielded insights into total amounts and characteristics of microfibres released under different washing conditions and for different clothing items; but also on the impact of participation in such a data collection on citizens' views on microplastic pollution and their perceived agency in implementing pollution reducing measures. Also see: https://micro2024.sciencesconf.org/559758/document