Mechanism of granule absorption for dissolved organic matters in fluidized-pellet-bed reactor

Key words: 
• jar test /
• desorption /
• equilibrium /
• Weber-Morris model

Abstract: Pollutant removal is achieved by the combined effect of coagulationsedimentation and granule absorption in the fluidizedpelletbed reactor (FPB). Granule absorption, instead of coagulationsedimentation, plays an improtant role in removal of dissolved organic pollutants according to the experimental results. Static absorption experiment is implemented to analyze the granule absorption for glucose and mass transfer process inside the granule. Langmuir formulation and Freudlich formulation are used to simulate the isothermal absorption process, and WeberMorris model is used to simulate the mass transfer process. As the results, the granule isothermal absorption process can meet the Langmuir formulation very well and the adsorption velocity is related to the diffusion process closely.