Occurrence and characteristics of microplastics in greywater from a research vessel
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Title
- Occurrence and characteristics of microplastics in greywater from a research vessel
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Author(s)
- Jang, Yu Lee; Jeong, Jong Wook; Eo, Soeun; Hong, Sang Hee; Shim, Won Joon
- KIOST Author(s)
- Jang, Yu Lee(장유리); Eo, Soeun(어소은); Hong, Sang Hee(홍상희); Shim, Won Joon(심원준)
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Alternative Author(s)
- 장유리; 정종욱; 어소은; 홍상희; 심원준
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Publication Year
- 2024-01
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Abstract
- The discharge of greywater from ships, an uncounted sea-based source of microplastics (MPs), is a growing concern. Yet, empirical data on MPs from this source are currently limited. Here, the abundances and characteristics of MPs in greywater from a research vessel were investigated according to water usage type (e.g., galley, cabin, and laundry). The mean abundance of MPs was highest in greywater from the laundry (177,667 n/m3), followed by the cabins (133,833 n/m3) and galley (75,000 n/m3). However, no significant differences were found in the MP abundances among greywater types due to high variability of triplicate samples collected every five days. Fiber-type MPs accounted for 66% of the total MP abundance and fragment-type MPs for 34%. Microplastics in the size range of 100–200 μm exhibited the highest levels among size classes. The dominant polymer identified in all greywater samples was polyester (53%), followed by polypropylene (23%). Marine coating origin MPs (6%) were also observed in all types of greywater. The greywater generation rate during the cruise was 0.15 m3/person∙day. Annual MP emissions per person by the greywater discharge of the research vessel was estimated to be 4.1 × 106 n/person∙year (equivalent to 3.0 g/person∙year).
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ISSN
- 0269-7491
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/44864
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DOI
- 10.1016/j.envpol.2023.122941
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Bibliographic Citation
- Environmental Pollution, v.341, 2024
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Publisher
- Pergamon Press Ltd.
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Keywords
- Greywater; Microplastics; Sea-based sources; Shipping; Emission
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Type
- Article
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Language
- English
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Document Type
- Article
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