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Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination

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Recent Developments in Nanomaterials-Modified Membranes for Improved Membrane Distillation Performance.

Saikat Sinha Ray¹, Harshdeep Singh Bakshi^1,2, Raghav Dangayach^1,2

¹Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei City 106, Taiwan.

|July 9, 2020

Summary

Nanomaterial modification enhances membrane distillation (MD) performance by improving flux and reducing fouling. This review explores new nanomaterials and methods for advanced membrane distillation operations.

Keywords:

Keywords: membrane distillation desalination fouling membranes nanomaterials wetting

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Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Membrane distillation (MD) is a separation process challenged by flux decline, fouling, and wetting.
Hydrophobic membranes are crucial for effective MD operations.
Nanomaterial incorporation offers a promising strategy to enhance MD membrane performance.

Purpose of the Study:

To comprehensively review the use of advanced nanomaterials in modifying MD membranes.
To discuss the desired membrane characteristics for optimal MD performance.
To evaluate methodologies for nanomaterial incorporation and their impact on MD applications.

Main Methods:

Review of literature on nanomaterial-modified MD membranes.
Analysis of incorporation techniques: surface grafting, plasma polymerization, interfacial polymerization, dip coating.
Evaluation of membrane properties: liquid entry pressure, permeability, porosity, hydrophobicity, stability, conductivity, strength.

Main Results:

Various nanomaterials (quantum dots, nanoparticles, MOFs, carbon-based) improve MD membrane properties.
Modified membranes exhibit enhanced flux, fouling resistance, and stability.
Successful application of nanomaterial-modified membranes in diverse MD operations.

Conclusions:

Nanomaterial modification is a key strategy to overcome MD operational challenges.
Further research into challenges and future aspects of nanomaterial integration is warranted.
Optimized nanomaterial-based MD membranes hold significant potential for water treatment and desalination.