Strategies for Enhancing Air Filter Performance Sustainability: Challenges and Future Directions

A research paper published in 2025 by Separation and Purification Technology systematically explores strategies for enhancing air filter performance sustainability, providing important academic foundation for green transformation of the filter industry.

Air filters face multiple performance degradation challenges during long-term use: dust loading causes continuous pressure drop increase, high-humidity environments cause filter material structural degradation, chemical pollutants erode adhesives and fibers, and UV radiation causes polymer material aging. These factors not only shorten filter service life, but force users to replace frequently, generating large quantities of solid waste. Estimates suggest global annual discarded air filters exceed billions of units, with majority entering landfills, causing severe environmental burden.

The paper proposes three major enhancement strategy categories: First is filter material modification technology—through plasma surface treatment, chemical grafting, or nano-particle deposition, improving fiber surface energy and mechanical strength, enhancing moisture and chemical corrosion resistance. Second is structure optimization—utilizing computational fluid dynamics (CFD) simulation to optimize folded geometry and spacing, reducing initial pressure drop 10-20% under equivalent filtration area, decelerating pressure drop growth curve. Third is functional nano-coating—applying superhydrophobic or superhydrophilic coatings to filter material surface. The former prevents water vapor-induced filter cake agglomeration, the latter facilitates self-cleaning maintenance.

The paper also identifies future research focus points: developing biodegradable filter materials to replace synthetic fibers, establishing standardized filter life acceleration testing methods, and developing filter recycling and circular economy models. These research trends align perfectly with Baisheng Technology's pursuit of "high-efficiency filtration, energy-saving and environmental protection" product philosophy, also providing clear technical roadmaps for new product development and service innovation.