MinShed meeting Dec 4 2019 Presentation by Anne-Charlotte Hanning - - PowerPoint PPT Presentation

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MinShed meeting Dec 4 2019 Presentation by Anne-Charlotte Hanning - - PowerPoint PPT Presentation

Dec 02, 2022 220 likes •337 views

MinShed meeting Dec 4 2019 Presentation by Anne-Charlotte Hanning and Emily Sderberg Agenda 4 december 10:00-10:20 Sophie Mather from The MicroFibre Consortium (TMC) will inform about their test method which now is released. 10:20-10:25 CEN

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MinShed meeting

Dec 4 2019 Presentation by Anne-Charlotte Hanning and Emily Söderberg

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Agenda 4 december

10:00-10:20 Sophie Mather from The MicroFibre Consortium (TMC) will inform about their test method which now is released. 10:20-10:25 CEN (The European standardisation organisation) and the future standardisation work concerning microplastics. 10:25-10:45 Steffen Schellenberger will present a study that investigated the release of side-chain fluorinated polymer-containing microplastic fibers from functional textiles during washing and a first estimates of perfluoroalkyl acid emissions. 10:45-11:00 Information about the latest testing results in WP2 – where we currently are investigating the influence of time , temperature and water volume in the washing machine.

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Future standardisation work

  • 4th of October CIA (Cross Industry Agreement) submitted a proposal of a laboratory test method for assessing

microplastic shedding from textiles to CEN

  • At the same meeting there was an Italian proposal of an exhaustive method for in depth analysis regarding

size distrubution , volume, morphology etc

  • CEN proposed a new working item with the title ”Microplastics from textile sources” with two parts and also a

liason the CEN/TC/249 Plastics

  • Anne-Charlotte H new member of the Swedish working group AG- Färg, Tvätt och Vatten
  • Next step
  • Voting during spring 2020
  • Start during Q3 2020
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WP2 – Washing machine filtering

Shedding affected by time and temperature during washing- Test setup

  • Electrolux W555H washing machine
  • 3 kg Wash load

– 2 pcs. of black PES fleece with overlocked edges á 300g – 2.4 kg of white PES standard ballast

  • 20 ml Liquid detergent “Via Color Sensitive” Batch no. 91571
  • Drying

– Fleece is hang dried OR tumble dried for 45 min, both in ambient temperature – Ballast is tumble dried for 45 min at maximum 80˚C (Electrolux T5130-LAB)

  • Filtering

– 3 L effluent – Nylon net filter 10 µm

  • Weighing

– Mass balance accurate down to 0.0001 g in standard climate

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Screening test - Part 1: Influence of Time and Temperature

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Wash set 1 20 ˚C, 10 min Extra water, collecting dryer lint from ballast Tumble drying of test material Wash set 2 20 ˚C, 60 min Wash set 3 60 ˚C, 10 min Wash set 4 60 ˚C, 60 min Extra water, collecting dryer lint from ballast

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Screening test - Part 2: Influence of Extra Water

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Wash set 1 20 ˚C, 10 min Extra water, collecting dryer lint from ballast Tumble drying of test material Wash set 2 20 ˚C, 60 min Wash set 3 60 ˚C, 10 min Wash set 4 60 ˚C, 60 min Extra water, collecting dryer lint from ballast

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Screening test - Part 3: Influence of tumble drying on material

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Wash set 1 20 ˚C, 10 min Extra water, collecting dryer lint from ballast Tumble drying of test material Wash set 2 20 ˚C, 60 min Wash set 3 60 ˚C, 10 min Wash set 4 60 ˚C, 60 min Extra water, collecting dryer lint from ballast

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Results – Part 1: influence of Time and Temperature

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50 100 150 200 250 300 Wash 1 Wash 3 Wash 5

Comparison time and temperature (mg fibres/kg washed fabric)

20.10 20.60 60.10 60.60

  • Fibre loss decreases with

each wash

  • Time and temperature

may not affect fibre loss in the first wash

  • In later washes the longer

duration of the main wash indicates a higher fibre loss

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Results - Part 2: Influence of Extra Water

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100 200 300 400 500 Wash 1 Wash 3 Wash 5

Comparison 20 ˚C (mg fibres/kg washed fabric)

20.10.EW 20.10 20.60

  • Higher water levels increase fibres in effluent, most apparent in the first wash
  • How relevant is the first wash?

100 200 300 400 500 Wash 1 Wash 3 Wash 5

Comparison 60 ˚C (mg fibres/kg washed fabric)

60.10 60.60.EW 60.60

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Results – Part 3: Influence of Tumble drying on material

  • Tumble drying prior to washing

does not largely influence fibre loss

  • Tumble drying after washing

decreases fibre loss in the next wash

  • Recommendation for consumers

to tumble dry instead of hang dry ?

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100 200 300 400 500 600 700 800 Wash 1 Hang dried Wash 1 Tumble dried test spec. Wash 3 Hang dried Wash 3 Tumble dried test spec. Wash 5 Hang dried Wash 5 Tumble dried test spec.

Comparison 20°C, 10 minute wash time (mg fibres/kg washed fabric)

Fibres in water Dryer lint from ballast Dryerlint from test spec. Dryerlint from test spec. prior to washing

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Thank you for your attention!

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