Controllable Preparation of rGO-PPS Composite Filter Material Based on Spray Modification and Its Filtration...

Area of Science:

• Materials Science
• Environmental Engineering
• Chemical Engineering

Background:

• Effective control of industrial dust pollutants is crucial for achieving dual carbon targets and promoting sustainable industrial environments.
• Existing filter materials often face challenges in balancing high filtration efficiency with low resistance.
• Polyphenylene sulfide (PPS) fiber filter materials are widely used but can be improved for enhanced performance.

Purpose of the Study:

• To develop and evaluate an improved dust removal material using a spraying method on polyphenylene sulfide (PPS) fiber filter material.
• To investigate the filtration performance, resistance characteristics, and dust-cleaning effect of the novel reduced graphene oxide-polyphenylene sulfide (rGO-PPS) composite filter material.
• To provide technical support for the application of high-efficiency purification filter materials in industrial settings.

Main Methods:

• Preparation of rGO-PPS composite filter material using a spraying method.
• Testing of filtration efficiency across a particle size range of 0.265–5.75 μm.
• Evaluation of filtration resistance under varying dust loads.
• Assessment of dust-cleaning effect by measuring dust peeling rate at different blowback wind speeds.

Main Results:

• The rGO-PPS material demonstrated significantly improved particle filtration efficiency compared to pure PPS, with an increase of 0.058–19.417% for particles sized 0.265–5.75 μm.
• Filtration efficiency increased with higher spraying concentrations of the composite material.
• The 3 g/L rGO-PPS composite filter material exhibited superior comprehensive performance, meeting 'high efficiency and low resistance' criteria.
• Dust peeling rate for the 3 g/L rGO-PPS material reached 74.52% at 0.3 m/s blowback wind speed, compared to 61.58% for PPS.

Conclusions:

• The developed rGO-PPS composite filter material offers enhanced filtration efficiency and dust removal capabilities for industrial applications.
• Optimizing spraying concentration is key to achieving superior performance, balancing efficiency and resistance.
• The study provides a strong experimental basis for the engineering application of advanced filter materials in industrial pollution control.