Abstract：A fluidized bed reactor was constructed with Fe-N co-doped yeast carbon (Fe-N-YC) as catalyst filler, and the degradation of rhodamine B (RhB) using potassium bisulfate (PMS) activated by Fe-N-YC in the fluidized bed reaction system was investigated. The reaction kinetic law, reaction mechanism and main influencing factors were further analyzed. The results showed that the adsorption efficiency of Fe-N-YC on RhB within 60 min could reach 34.6%. When the inlet flow rate was 1.83 m/h and the amount of PMS was 0.3mmol, RhB could be completely removed within 40 min, and the reaction followed a first-order kinetic with an apparent rate constant of 0.121 8 min-1. Quenching experiments show that in the Fe-N-YC/PMS/light system, ·OH, SO4-· and O2-· are all effective free radicals for the degradation of RhB, among which ·OH and SO4-· play a major role. It shows the significant advantages of adsorption and Fenton-like synergy, low energy consumption and low oxidant dosage in the fluidized bed reactor.
CHEN Si,SHEN Zhe,ZHANG Le et al. Degradation of RhB Using Peroxymonosulfate Activated by Fe-N Yeast Carbon in a Fluidized Bed Reactor[J]. Chemical Reaction Engineering and Technology, 2025, 41(3): 390-399.
