Related Experiment Video
Updated: Dec 22, 2025
05:31
Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
Published on: July 28, 2018
16.6K
Microplastics in wastewater: microfiber emissions from common household laundry
Ana Galvão1, Margarida Aleixo2, Hilda De Pablo3
1CERIS, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001, Lisbon, Portugal. ana.galvao@tecnico.ulisboa.pt.
Summary
Washing clothes releases millions of synthetic microfibers into wastewater, contributing to microplastic pollution. This study quanties microfiber emissions from domestic laundry for the first time.
Area of Science:
- Environmental Science
- Ecotoxicology
- Polymer Science
Background:
- Microplastics are emerging pollutants with significant ecotoxicological impacts.
- Synthetic textile fibers are a major source of microplastics entering aquatic environments.
- Wastewater treatment plants show limited efficiency in retaining these microfibers.
Purpose of the Study:
- To quantify microfiber emissions from domestic textile washing under real-world conditions.
- To characterize the size distribution of microfibers released during laundry.
- To assess the contribution of household laundry to microplastic pollution.
Main Methods:
- Collected wastewater from domestic laundry of a 4-person household.
- Analyzed wastewater to determine microfiber emission rates.
- Characterized microfibers based on size (length).
Main Results:
- Estimated an average emission rate of 18,000,000 synthetic microfibers per 6 kg of synthetic fibers.
- Found that 53% of emitted microfibers were between 50-100 μm.
- Observed that 40% were 100-500 μm, and only 7% were larger than 500 μm.
Conclusions:
- Domestic laundry is a significant source of synthetic microfiber pollution.
- The majority of microfibers released are small, posing challenges for removal.
- Further research is needed on microfiber mitigation strategies in households and wastewater treatment.
