QIAO Chongzhi, LIU Wenjun, FU Linwei, et al. Theoretical study on adsorption of nanoparticles in dilute concentration under shear flow[J]. CIESC Journal, 2015, (1): 132-141.
QIAO Chongzhi, LIU Wenjun, FU Linwei, et al. Theoretical study on adsorption of nanoparticles in dilute concentration under shear flow[J]. CIESC Journal, 2015, (1): 132-141.DOI: 10.11949/j.issn.0438-1157.20140912.
Fundamental study of diffusion and adsorption of nanoparticles under shear flow provides a theoretical basis for designing more efficient processes for separations and transportations. In this work
the mechanism of chelating particles (ChP) trapping contaminant particles (CoP) in hydrocyclone was addressed. By constructing simple yet meaningful theoretical models
the effects of shear flow on adsorptions were investigated. Rotational speed only strengthened adsorption
whereas adsorption direction was determined by intrinsic characteristics of adsorbents and solvent. Besides
the capture time of CoP was dominated by the diffusion process of CoP in the solvent
towards which a simple equation for estimating diffusion time was derived. Diffusion time was inversely proportional to the 4/3 power of ChP concentration but directly proportional to the averaged volume of a single Cop. Current theoretical study provided guidance for improving efficiency of separating contaminants.