Synergistic electromagnetic confinement for high-efficiency PM2.5 removal in a spiral two-inlet ECP

• A spiral two-inlet ECP is designed by changing the number and arrangement of inlets. • Two-inlet ECP exhibits the best capture performance without electromagnetic field. • Electromagnetic confinement effect can improve the trapping of PM2.5. • Spiral two-inlet ECP demonstrates optimal performance with electromagnetic field. • The improvement caused by spiral two-inlet structure can reach 4.1%. Enhancing the removal performance of fine particulate matter (PM2.5) in electrostatic cyclone precipi