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Related Concept Videos

Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
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A versatile, highly effective nanofibrous separation membrane.

Hua Zhou1, Haitao Niu2, Hongxia Wang3

  • 1Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia. tong.lin@deakin.edu.au hong.wang@deakin.edu.au and Institute of Textile and Clothing, Qingdao University, 266000, China.

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|January 22, 2020
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Summary
This summary is machine-generated.

A novel nanofibrous membrane offers versatile filtration, efficiently separating oil/water emulsions, oil, and solid aerosols across different media. This reusable filter demonstrates high efficiency and flux, advancing environmental protection technologies.

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Area of Science:

  • Materials Science
  • Environmental Science
  • Chemical Engineering

Background:

  • Existing fibrous filters lack versatility for multi-separation tasks across different media.
  • Separating oil/water emulsions, aerosols, and solid particles often requires specialized filters.

Purpose of the Study:

  • To develop a novel nanofibrous membrane with versatile separation capabilities.
  • To demonstrate the membrane's efficiency in separating diverse contaminants from various media.

Main Methods:

  • Fabrication of a nanofibrous membrane with a unique amphibious superhydrophilic-superoleophobic surface.
  • Testing the membrane's performance in separating oil/water emulsions, oil aerosol droplets, solid aerosol particles, and micro-sized solid particles.

Main Results:

  • Achieved over 99.9% efficiency for oil/water emulsion separation at high flux (4082 L m⁻² h⁻¹).
  • Demonstrated 99.98% efficiency for oil aerosol droplet separation (∼330 nm) and 85-99% for solid aerosol particles from air.
  • Showcased >95% efficiency for micro-sized solid particle removal from water.
  • Confirmed the membrane's reusability for cross-medium filtration tasks.

Conclusions:

  • The developed nanofibrous membrane exhibits exceptional versatility and high efficiency in separating diverse contaminants across liquid and gas phases.
  • The amphibious surface properties and fine fibrous structure are key to its multi-separation capability.
  • This technology holds significant potential for advanced environmental protection applications.