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Related Concept Videos

Filtration00:53

Filtration

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Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
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Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

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Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
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Sustainable Filtering Systems to Reduce Microfiber Emissions from Textiles during Household Laundering.

Francisco Belzagui1, Carmen Gutiérrez-Bouzán1, Fernando Carrillo-Navarrete1

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Summary

New filters effectively capture microfibers (MFs) released from synthetic textiles during laundry. These sustainable systems, using recycled materials, significantly reduce microfiber pollution from washing machines, with some filters achieving over 90% retention.

Keywords:
LDPEfiltering devicemicrofibermicroplastictextile washing

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Area of Science:

  • Environmental Science
  • Materials Science
  • Textile Engineering

Background:

  • Synthetic textiles release microfibers (MFs), a type of microplastic, during laundering.
  • Microfibers are persistent environmental pollutants with no current removal solutions.
  • Washing machines are a significant source of microfiber pollution entering aquatic ecosystems.

Purpose of the Study:

  • To develop and evaluate sustainable filtering systems for retaining microfibers from domestic washing machine effluents.
  • To assess the microfiber retention efficiency of four novel filter designs using recycled materials.
  • To determine the longevity and performance of the developed filters over multiple washing cycles.

Main Methods:

  • Four distinct microfiber filter systems (F1, F2, F3, F4) were designed and constructed using recycled low-density polyethylene pellets.
  • The filters were integrated into a household washing machine and tested over numerous wash cycles.
  • Microfiber retention efficiency was quantified by analyzing the washing machine's effluent after each cycle.

Main Results:

  • All four filter designs demonstrated effective microfiber retention, with efficiencies ranging from 52% to 86% after the first wash cycle.
  • Filter F2 and F4 achieved over 90% microfiber retention by the 20th wash cycle.
  • Filter F3, an inverted flow design of F1, reached nearly 100% retention by the 15th cycle.
  • Filter cartridges proved durable, lasting over 30 washing cycles before replacement was needed.

Conclusions:

  • The developed sustainable filtering systems offer a viable solution for mitigating microfiber pollution from laundry.
  • Optimized filter designs, such as F3 and F4, can achieve very high microfiber retention rates.
  • These filters represent a practical and eco-friendly approach to reducing the environmental impact of synthetic textiles.