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 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)/R2 increases with increasing ultrasonic intensity and pulse duty ratio, and with decreasing pulse period.
Ji
Jian-bing
JB
College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, PR China. jjb@zjut.edu.cn
Lu
Xiang-hong
XH
Xu
Zhi-chao
ZC
D000327:Adsorption; D002621:Chemistry / Q000379:methods; D004058:Diffusion; D039823:Iridoids / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D010936:Plant Extracts / Q000302:isolation & purification; D011108:Polymers / Q000737:chemistry*; D011714:Pyrans / Q000737:chemistry* / Q000378:metabolism; D012116:Resins, Plant / Q000737:chemistry; D014465:Ultrasonics
D039823:Iridoids; D010936:Plant Extracts; D011108:Polymers; D011714:Pyrans; D012116:Resins, Plant; C007835:geniposide