Abstract
The adsorption process of cotton textile for castor oil,lecithin,liquid paraffin and lanolin was investigated.The adsorption isotherms and adsorption kinetics were also studied.Results of batch experiments showed that the equilibriums were fitted with the Freundlich equations.The characteristic parameters for this model were determined.The dynamic equilibrium adsorption was reached when the concentrations of stains were 200 mg/mL.The descending order of adsorption capacity was Arabic gum,lecithin,castor oil,lanolin,liquid paraffin.Adsorption processes followed quasi-secondary reaction kinetics.Arabic gum,which was polysaccharide polymer,had the fastest absorption rate,liquid paraffin showed the slowest adsorption rate.The SEM surface morphology observation showed that much of stains entered the fiber gap and glued to the fiber bundle surface.Infrared spectral analysis showed that there were hydrogen bonding between Stains and fibers.
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