Sorption of Cu(II) Ions on Chitosan-Zeolite X Composites: Impact of Gelling and Drying Conditions

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Amal DjeladF Quignard

Abstract

Chitosan-zeolite Na-X composite beads with open porosity and different zeolite contents were prepared by an encapsulation method. Preparation conditions had to be optimised in order to stabilize the zeolite network during the polysaccharide gelling process. Composites and pure reference components were characterized using X-ray diffraction (XRD); scanning electron microscopy (SEM); N₂ adsorption-desorption; and thermogravimetric analysis (TG). Cu(II) sorption was investigated at pH 6. The choice of drying method used for the storage of the adsorbent severely affects the textural properties of the composite and the copper sorption effectiveness. The copper sorption capacity of chitosan hydrogel is about 190 mg·g(-1). More than 70% of this capacity is retained when the polysaccharide is stored as an aerogel after supercrititcal CO₂ drying, but nearly 90% of the capacity is lost after evaporative drying to a xerogel. Textural data and Cu(II) sorption data indicate that the properties of the zeolite-polysaccharide composites are not just the sum of the properties of the individual components. Whereas a chitosan coating impairs the accessibility of the microporosity of the zeolite; the presence of the zeolite improves the stability ...Continue Reading

References

Mar 27, 1999·Journal of Colloid and Interface Science·O A Monteiro, C Airoldi
Dec 3, 2002·Journal of Inorganic Biochemistry·Corrado Muzzarelli, Riccardo A A Muzzarelli
Dec 9, 2004·Chemical Reviews·M N V Ravi KumarA J Domb
May 17, 2005·Biomaterials·Alberto Di MartinoMakarand V Risbud
Sep 13, 2005·Biomacromolecules·Romain ValentinFrançoise Quignard
Jan 30, 2007·Journal of Hazardous Materials·Fan ZhaoChangsheng Zhao
Apr 14, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Ryan L Hartman, H Scott Fogler
May 15, 2007·Journal of Hazardous Materials·Rogério LausValfredo T Fávere
Oct 4, 2007·Biomacromolecules·Romain ValentinFrançoise Quignard
Oct 5, 2007·Journal of Colloid and Interface Science·Jian Hua ChenQiu Gen Zhang
Apr 23, 2008·Journal of Industrial Microbiology & Biotechnology·K M de LathouderJ A Moulijn
Jun 12, 2008·The Journal of Physical Chemistry. B·Xinhong ChangXiuling Jiao
Jun 16, 2009·Journal of Hazardous Materials·S SvilovićR Stipisić
Dec 9, 2009·The Journal of Physical Chemistry. B·Fengyi LiuMike Robitzer
Aug 18, 2010·Chemical Communications : Chem Comm·Alfredo RicciFrançoise Quignard
Apr 30, 2011·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Anabelle C L BatistaGalba M Campos-Takaki
Jan 1, 2010·Topics in Current Chemistry·Françoise QuignardEric Guibal

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Citations

Apr 5, 2017·Annual Review of Chemical and Biomolecular Engineering·Irina Smirnova, Pavel Gurikov
Jun 28, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Massimiliano Fenice
Jun 12, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·D HumelnicuM V Dinu
Nov 2, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yuezhou WeiEric Guibal
Feb 5, 2019·International Journal of Biological Macromolecules·Imadeddine LakehalLaurence Reinert
Nov 5, 2020·Carbohydrate Polymers·Utkarsh UpadhyayK L Anitha

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Methods Mentioned

BETA
X-ray
acetylation
atomic absorption spectrometry

Software Mentioned

Prism

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