Effect of ultrasound on adsorption of Geniposide on polymeric resin

The effects of pulse ultrasound with different pulse parameter on the adsorption isotherm and kinetics of Geniposide on Resin 1300 were studied. And the mass transfer model describing the adsorption process was constructed. Amount of Geniposide adsorbed on Resin 1300 in the presence of ultrasound is...

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Veröffentlicht in:Ultrasonics sonochemistry 2006-07, Vol.13 (5), p.463-470
Hauptverfasser: Ji, Jian-bing, Lu, Xiang-hong, Xu, Zhi-chao
Format: Artikel
Sprache:eng
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Zusammenfassung:The effects of pulse ultrasound with different pulse parameter on the adsorption isotherm and kinetics of Geniposide on Resin 1300 were studied. And the mass transfer model describing the adsorption process was constructed. Amount of Geniposide adsorbed on Resin 1300 in the presence of ultrasound is lower than that in the absence of ultrasound. At our experimental conditions, the adsorption equilibrium constant decreases with increasing ultrasonic intensity and pulse duty ratio, and with decreasing pulse period. In addition, pulse ultrasound can enhance both liquid film diffusion and intraparticle diffusion, and the intensification of liquid film diffusion with pulse ultrasound is stronger than that of intraparticle diffusion. The intraparticle diffusion coefficient D e / R 2 increases with increasing ultrasonic intensity and pulse duty ratio, and with decreasing pulse period.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2005.08.004