The researchers tested the use of rosette packing in a process to remove sulfur dioxide from flue gas. They conducted experiments in a column and found that by adjusting factors like pH, temperature, and concentration, they could achieve over 80% removal efficiency. The best conditions included a packing height of 1 meter, pH of 6-7, liquid-gas ratio of 2-3, flue gas temperature below 50°C, gas speed of 1.0-1.5 m/s, and initial sodium sulfite concentration of 0.3-0.5 mol/L.