Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Study on Adsorption of Congo Red by the Composite Material of Magnetic Cellulose/Fe_3O_4/Activated Carbon

SHEN Ting-ting et al(Department of Environmental Engineering,Taizhou University,Linhai,Zhejiang 317000)  
Cellulose was dissolved rapidly in NaOH/thiourea/urea aqueous solution at low environment temperatures,which was a "green" process.By blending cellulose solution with Fe3O4 and activated carbon,the magnetic cellulose/Fe3O4 /activated carbon composite was prepared.Its structure was examined by XRD、SEM and TGA.With the congo red solution as the target pollutants,the effects of the adsorption dosage and the initial concentration of congo red on the adsorption of congo red was inspected,and then discussed with adsorption kinetics and thermodynamics.The results indicated that the effect of initial concentration on adsorption capacity was remarkable,the rate of decolorization enhanced with the increasing adsorbent dosage.The absorption of congo red by the composite followed the Freundlich isotherm,the kinetic data met pseudo-secondorder equation and the intraparticle diffusion was the rate-controlling step.Lower temperature was favorable to adsorption due to the spontaneous and exothermic nature of the adsorption process.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved