Document Detail


Novel magnetic chitosan/poly(vinyl alcohol) hydrogel beads: Preparation, characterization and application for adsorption of dye from aqueous solution.
MedLine Citation:
PMID:  22189074     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Novel magnetic chitosan/poly(vinyl alcohol) hydrogel beads (m-CS/PVA HBs) were prepared by an instantaneous gelation method and characterized by X-ray diffraction (XRD), vibrating sample magnetometry (VSM) and thermogravimetric analysis (TGA). Results of characterization indicated that m-CS/PVA HBs have been prepared successfully without damaging the crystal structure of Fe(3)O(4) and their saturation magnetization were about 21.96emug(-1). The adsorption capacity of Congo Red on the m-CS/PVA HBs was 470.1mgg(-1). The adsorption was well described by pseudo-second-order kinetics and Langmuir equation. Positive value of enthalpy change (ΔH(∘)) (13.32kJmol(-1)) showed that the adsorption was endothermic and physical in nature. The values of Gibbs free energy change (ΔG(∘)) were found to be -3.321kJmol(-1) at 298K for m-CS/PVA HBs, indicating the spontaneity of Congo Red adsorption. Therefore, the m-CS/PVA HBs could be employed as a low-cost alternative to other adsorbents in the removal of dyes from aqueous solution.
Authors:
H-Y Zhu; Y-Q Fu; R Jiang; J Yao; L Xiao; G-M Zeng
Related Documents :
22144464 - Candle soot as a template for a transparent robust superamphiphobic coating.
1194874 - The relation of nerves to multiple regeneration in a single newt limb.
22242834 - Self-organized anisotropic wrinkling of molecularly aligned liquid crystalline polymer.
21902034 - The effectiveness of humic acids coagulation with the use of cationic polyacrylamides.
10581864 - Radium and radon in natural underground water supply in the region of lódź, poland.
21950594 - The thermodynamics of cellulose solvation in water and the ionic liquid 1-butyl-3-methy...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-25
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-12-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, PR China; Key Laboratory for Biomass-Resource Chemistry and Environmental Biotechnology of Hubei Province, Wuhan University, Wuhan 430072, Hubei, PR China.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Effects of cultivation conditions and media composition on cell growth and lipid productivity of ind...
Next Document:  A rapid and low energy consumption method to decolorize the high concentration triphenylmethane dye ...