Recent Advances in Membrane-Based Air Filtration Technologies for Ambient Particulate Matter Separation

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Background:

• Particulate matter (PM) poses significant environmental and public health risks.
• Effective separation of PM from ambient air is crucial for mitigating these risks.

Purpose of the Study:

• To review the application of membrane technology for particulate matter separation.
• To explore recent advancements and properties of membrane filters.
• To compare membrane filters with conventional air filters.

Main Methods:

• Review of existing literature on membrane technology for PM separation.
• Discussion of various membrane types (nanofibrous, microporous, Janus, photocatalytic, hollow fiber).
• Analysis of membrane properties (antibacterial, flame retardancy, thermal stability, reusability).

Main Results:

• Diverse membrane types demonstrate high efficiency in PM separation.
• Key properties like antibacterial activity and reusability enhance membrane performance.
• Membrane filters offer advantages over conventional filters in terms of separation principles and effectiveness.

Conclusions:

• Membrane technology is a vital tool for PM separation from ambient air.
• Innovations in membrane filters, including green fabrication and AI/ML, promise future advancements.
• Addressing cost and scalability is key for widespread adoption of advanced membrane air filters.