title: Chitosan-cellulose composite materials: preparation, characterization and application for removal of microcystin.
abstract: We developed a simple and one-step method to prepare biocompatible composites from cellulose (CEL) and chitosan (CS). [BMIm(+)Cl(-)], an ionic liquid (IL), was used as a green solvent to dissolve and prepare the [CEL+CS] composites. Since majority (>88%) of IL used was recovered for reuse by distilling the aqueous washings of [CEL+CS], the method is recyclable. XRD, FTIR, NIR, (13)C CP-MAS-NMR and SEM were used to monitor the dissolution and to characterize the composites. The composite was found to have combined advantages of their components: superior mechanical strength (from CEL) and excellent adsorption capability for microcystin-LR, a deadly toxin produced by cyanobacteria (from CS). Specifically, the mechanical strength of the composites increased with CEL loading; e.g., up to 5× increase in tensile strength was achieved by adding 80% of CEL into CS. Kinetic results of adsorption confirm that unique properties of CS remain intact in the composite, i.e., it is not only a very good adsorbent for microcystin but also is better than all other available adsorbents. For example, it can adsorb 4× times more microcystin than the best reported adsorbent. Importantly, the microcystin adsorbed can be quantitatively desorbed to enable the composite to be reused with similar adsorption efficiency.
authors.affiliation: Department of Chemistry, Marquette University, PO Box 1881, Milwaukee, WI 53201, USA. chieu.tran@marquette.edu
authors.forename: Chieu D
authors.initials: CD
authors.lastname: Tran
authors.forename: Simon
authors.initials: S
authors.lastname: Duri
authors.forename: Ambra
authors.initials: A
authors.lastname: Delneri
authors.forename: Mladen
authors.initials: M
authors.lastname: Franko
mesh_terms: D000327:Adsorption; D002482:Cellulose / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D007093:Imidazoles / Q000737:chemistry; D008387:Marine Toxins; D052998:Microcystins / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D007093:Imidazoles; D008387:Marine Toxins; D052998:Microcystins; D014874:Water Pollutants, Chemical; C502841:1-butyl-3-methylimidazolium chloride; D002482:Cellulose; D048271:Chitosan; C057862:cyanoginosin LR
references.citation: Mar Drugs. 2011;9(11):2164-75
references.pmid: 22163179
references.citation: J Am Chem Soc. 2008 Jan 9;130(1):28-9
references.pmid: 18076180
references.citation: Anal Bioanal Chem. 2010 Jul;397(5):1705-14
references.pmid: 20502884
references.citation: J Biomed Mater Res B Appl Biomater. 2006 Oct;79(1):129-36
references.pmid: 16544309
references.citation: Prehosp Emerg Care. 2007 Apr-Jun;11(2):172-8
references.pmid: 17454803
references.citation: Chem Commun (Camb). 2012 Jul 28;48(59):7350-2
references.pmid: 22457875
references.citation: Environ Pollut. 2006 May;141(2):206-12
references.pmid: 16214277
references.citation: Mar Drugs. 2010 May 10;8(5):1650-80
references.pmid: 20559491
references.citation: J Phys Chem B. 2008 Apr 17;112(15):4735-40
references.pmid: 18366215
references.citation: Environ Sci Technol. 2006 Dec 1;40(23):7336-42
references.pmid: 17180986
references.citation: Biomacromolecules. 2003 Nov-Dec;4(6):1457-65
references.pmid: 14606868
references.citation: J Am Chem Soc. 2002 May 8;124(18):4974-5
references.pmid: 11982358
references.citation: Biomacromolecules. 2007 Sep;8(9):2629-47
references.pmid: 17691840
references.citation: J Hazard Mater. 2006 Aug 25;136(3):721-6
references.pmid: 16488537
references.citation: Carbohydr Polym. 2012 Oct 15;90(3):1197-203
references.pmid: 22939331
references.citation: Chemosphere. 2006 Jan;62(1):142-8
references.pmid: 15893800
references.citation: Pharm Dev Technol. 2003;8(2):199-208
references.pmid: 12760570
references.citation: Microb Ecol. 2009 Jul;58(1):47-55
references.pmid: 18777048
references.citation: J Mater Sci Mater Med. 2010 Jul;21(7):2227-36
references.pmid: 20372985
references.citation: Biomacromolecules. 2012 Feb 13;13(2):570-8
references.pmid: 22260431
references.citation: Carbohydr Lett. 2000;4(1):61-7
references.pmid: 11469339
references.citation: Antimicrob Agents Chemother. 2009 Feb;53(2):393-400
references.pmid: 19015341
references.citation: Anal Chem. 2002 Oct 15;74(20):5337-41
references.pmid: 12403590
references.citation: Carbohydr Res. 2008 Mar 17;343(4):769-72
references.pmid: 18258220
references.citation: J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2009 Jan;27(1):36-55
references.pmid: 19204863
references.citation: Toxicon. 2000 Feb;38(2):303-8
references.pmid: 10665811
references.citation: Anal Biochem. 2000 Nov 1;286(1):67-74
references.pmid: 11038275
references.citation: Biomaterials. 2006 Aug;27(22):4157-64
references.pmid: 16616364
references.citation: Acc Chem Res. 2007 Nov;40(11):1079-86
references.pmid: 17910515
references.citation: Mutat Res. 2011 Jan-Apr;727(1-2):16-41
references.pmid: 21277993
references.citation: Biomacromolecules. 2010 Jan 11;11(1):88-96
references.pmid: 19994882
references.citation: Anal Chem. 1996 Mar 15;68(6):971-6
references.pmid: 8651488
references.citation: J Biomed Mater Res B Appl Biomater. 2008 Jul;86(1):105-12
references.pmid: 18098198
references.citation: Environ Sci Technol. 2011 Mar 15;45(6):2293-300
references.pmid: 21322549
references.citation: Chem Rev. 1999 Aug 11;99(8):2071-2084
references.pmid: 11849019
references.citation: Chem Rev. 2009 Dec;109(12):6712-28
references.pmid: 19757807
references.citation: Environ Pollut. 2006 May;141(2):201-5
references.pmid: 16213637
references.citation: Int J Mol Sci. 2009 Mar;10(3):1300-13
references.pmid: 19399250
references.citation: J Trauma. 2003 Jan;54(1):177-82
references.pmid: 12544915
references.citation: Water Environ Res. 2012 Jul;84(7):562-8
references.pmid: 22876478
references.citation: Appl Spectrosc. 2003 Feb;57(2):152-7
references.pmid: 14610951