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Modeling of solid—liquid adsorption: Effects of adsorbent loads on model parameters
Author(s) -
Leitão Anabela,
da Conceição Euridice,
Santos Rosalinda,
Rodrigues Alirio
Publication year - 1992
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450700411
Subject(s) - adsorption , mass transfer , materials science , diffusion , activated carbon , chemical engineering , volumetric flow rate , particle size , chromatography , surface diffusion , composite material , chemistry , thermodynamics , organic chemistry , physics , engineering
Abstract The adsorption of cobalt phthalocyanine dye onto activated carbon in a continuous stirred tank adsorber was studied. The variables investigated were: adsorbent mass, adsorbent particle size and fluid flowrate. Several models based on film, pore and surface diffusion were constructed and fitted to the experimental data. Experimental results showed: (i) the increasing importance of the film mass transfer resistance for increasing adsorbent loads; (ii) the increasing importance of the surface diffusion mechanism for increasing adsorbent loads; and (iii) the better discrimination among different models for higher adsorbent loads and lower flowrate.