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Quantification of textile microfibers from laundry wastewater using the Rock-Eval® device: Difference between natural and synthetic microfiber origins

Zenodo (CERN European Organization for Nuclear Research) 2024
Maria-Fernanda ROMERO-SARMIENTO, Sébastien Rohais, Matthieu Dreillard

Summary

Researchers applied the Rock-Eval pyrolysis and oxidation device to quantify synthetic and natural textile microfibers in laundry wastewater, developing specific linear regressions for polyester, polyamide, viscose, cotton, and linen to enable rapid mass quantification of microfibers on filtration membranes.

Polymers
Study Type Environmental

Synthetic textiles constitute a significant emission source of microplastics into the environment release by mechanical abrasion during laundering. Only a portion of these microfibers is retained in wastewater treatment plants, and major issues to identify and quantify microfibers remain because of their nature, shape, and size. Our contribution is therefore to propose a quick analytical method to quantify microfiber contents in laundry wastewater. Pure natural (cotton, linen) and synthetic (polyester PET, polyamide, viscose) textiles as well as real laundry wastewater pre-filtered on a silica membrane were analyzed using a pyrolysis and oxidation based-method: the Rock-Eval® device. In this study, a novel procedure based on Rock-Eval® parameters was carried out for mass quantification of textile microfibers emitted from washing machines. Specific linear regressions of Rock-Eval® parameters were defined for each investigated natural and chemical fibers. These regressions were then used for the mass quantification of textile microfibers previously deposited on filtration membranes. Furthermore, both the 100 Also see: https://micro2024.sciencesconf.org/553036/document

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