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Related Concept Videos

Detergent Purification of Membrane Proteins01:18

Detergent Purification of Membrane Proteins

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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Three-Dimensionally Printed Microfluidic Cross-flow System for Ultrafiltration/Nanofiltration Membrane Performance Testing
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Nanovoids Engineering for Enhancing Separation Performance and Compaction Resistance of Polyamide Reverse Osmosis

Houkang Pu1, Hanjing Xue1, Xiaojuan Wang1

  • 1Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology (Ministry of Education), College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.

Environmental Science & Technology
|June 4, 2026
PubMed
Summary

Researchers created uniform nanovoids in reverse osmosis (RO) membranes using a nanobubble-nanoparticle strategy. This enhances water permeance and salt rejection while improving membrane stability and compaction resistance for efficient desalination.

Keywords:
compaction effectnanobubblesnanovoidspolyamide layerreverse osmosis membranestress dispersion

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Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
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Last Updated: Jun 5, 2026

Three-Dimensionally Printed Microfluidic Cross-flow System for Ultrafiltration/Nanofiltration Membrane Performance Testing
10:19

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Published on: February 13, 2016

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
07:32

Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification

Published on: April 7, 2017

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Environmental Science

Background:

  • Polyamide reverse osmosis (RO) membranes are crucial for water desalination.
  • Enhancing water permeance and salt rejection in RO membranes is a key challenge.
  • Nanovoids offer potential for improved water transport but face issues with morphology and compaction.

Purpose of the Study:

  • To develop a novel strategy for fabricating RO membranes with uniform nanovoids.
  • To improve the water permeance, salt rejection, and compaction resistance of RO membranes.
  • To investigate the role of precisely engineered nanovoids in membrane performance and stability.

Main Methods:

  • Utilized a nanobubble-nanoparticle coupling strategy with sacrificial ZIF-8 nanoparticles.
  • Confined interfacial growth of nanobubbles to create uniform, quasi-spherical nanovoids.
  • Fabricated the CO2-0.50/ZIF-8(32) membrane and evaluated its performance under various conditions.

Main Results:

  • The CO2-0.50/ZIF-8(32) membrane exhibited high water permeance (3.35 L·m⁻²·h⁻¹·bar⁻¹) and salt rejection (99.13%).
  • The fabricated nanovoids were uniform, small-sized, and quasi-spherical, unlike conventional membranes.
  • Demonstrated significantly enhanced compaction resistance, with minimal permeance loss during accelerated tests.

Conclusions:

  • Finely designed nanovoids act as zero-mass reinforcement, effectively dispersing stress and mitigating compaction.
  • The nanobubble-nanoparticle strategy enables simultaneous improvements in permeance and structural stability.
  • This work presents an energy-efficient and sustainable membrane design for desalination and freshwater production.