Metal complexation by chitosan and its derivatives: a review

Varma, A.J.; Deshpande, Sonal; Kennedy, John F.

doi:10.1016/j.carbpol.2003.08.005

Cited by 1,043 publications

(548 citation statements)

References 69 publications

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“…Chitosan (CHT), a deacetylated derivative of chitin, has numerous applications in different fields including photography [5], metal capture from waste water (Hg 2+ , Cr 3+ ) [6][7][8], and acid dye sorption [9]. The low cost of CHT compared with commercial activated carbon as well as its possible biodegradability made it suitable for removal of heavy metals from industrial effluent [10]. In CHT molecule, the amino sites are the main reactive groups for metals ions, although hydroxyl groups (especially in the C 3 position) may contribute to the sorption process [11].…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Biocomposite from Prawn Shell Derived Chitosan and Kaolinite-Rich Locally Available Clay

Biswas

Rashid

Mallik

et al. 2017

International Journal of Polymer Science

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A novel composite material was prepared from prawn shell derived chitosan (CHT) and locally available kaolinite-rich modified Bijoypur clay (MC) using a facile technique in which dilute acetic acid was used as a solvent for dissolving chitosan and composite fabrication whereas distilled water was used for preparing the clay dispersion. Bijoypur clay mainly consists of kaolinite clay mineral and it was modified with the dodecyl amine to make it organophilic. Morphology and properties of the composites (different weight ratio of MC and CHT) have been studied and compared with those of pure CHT and MC. Purification and modification of Bijoypur clay were investigated by X-ray diffraction (XRD), X-ray fluorescence (XRF), and Fourier transformed infrared spectroscopy (FTIR) analyses. The fabrication of CHT-MC composites was confirmed by FTIR analysis. Thermogravimetric analysis (TGA) and differential scanning colorimetry (DSC) were used to investigate the thermal stability of the composites. It was observed that dispersed clay improves the thermal stability and enhances the hardness of the matrix systematically with the increase of clay loading. In this study, a better insolubility in both acidic and alkaline media of the composites is also observed compared to pure chitosan.

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Section: Introductionmentioning

confidence: 99%

Facile Preparation of Biocomposite from Prawn Shell Derived Chitosan and Kaolinite-Rich Locally Available Clay

Biswas

Rashid

Mallik

et al. 2017

International Journal of Polymer Science

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“…It was reported that cross-linked structure of chitosan may hinder metal ions from accessing functional groups which bound directly to the chitosan, and therefore adsorption capability of cross-link chitosan may possibly inferior than chitosan itself [20]. However, in the present study, the serine diacetic acid functional group was introduced to the chitosan through the extension arm of chloromethyloxirane, thus providing better access for metal ions to the functional group.…”

Section: Adsorption Of Various Elements On Ccts-sdamentioning

confidence: 85%

“…Chitosan, an N-deacetylated product of chitin which can be obtained in large quantity from crustacean shells, has become an important natural polymer because of its unique properties, such as higher chelating ability compared to other natural polymers obtained from seafood-industries waste, easy derivatization, and biodegradability [20]. The reactive amino group in chitosan can provide easy-derivatization of this material with some chelating moiety for wider application in solid phase extraction.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel chitosan resin derivatized with serine diacetic acid moiety and its application to on-line collection/concentration of trace elements and their determination using inductively coupled plasma-atomic emission spectrometry

Hakim

Sabarudin

Oshima

et al. 2007

Analytica Chimica Acta

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A novel chelating resin functionalized with serine diacetic acid moiety was synthesized by using chitosan as base material, and applied to the collection/concentration of trace elements in environmental water samples, followed by the determination using inductively coupled plasma-atomic emission spectrometer (ICP-AES). The synthesized resin, crosslinked chitosan serine diacetic acid (CCTS-SDA), showed good adsorption behavior toward trace amounts of Cd, Pb, Cu, Ni, V, Ga, Sc, In, and Th in a wide pH range.Additionally, rare earth elements also can be retained on the resin at neutral pH region. The adsorbed elements can be easily eluted with 1 mol L -1 of nitric acid, and their recoveries were found to be 90-100%. The CCTS-SDA was packed in a mini-column, which was then installed in a computer-controlled auto-pretreatment system (Auto-Pret System) for on-linetrace elements collection and determination with ICP-AES. Experimental parameters which related to the improvement of sensitivity and reproducibility were optimized. The limit of detections (LOD) for 13 elements were found to be in sub-ppb level. The proposed method with CCTS-SDA resin was successfully applied to the determination of trace elements in river water samples. The method was validated by determining a certified reference material of river water, SLRS-4.

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“…It was reported that the introduction of cross-linked structure may reduce chitosan adsorption capacity toward Mo by 2 to 2.6 times, because the metals accessibility to the sorption sites changes due to the modification of polymer structure [23]. Although the reduction of chitosan adsorption capacity toward Mo also might be attributed to the saturation of amine sites for cross-link structure terminal, our observation shows that even the CCTS L. Hakim et al 14 250 whose EGDE cross-link terminal does not involve amine sites also has a lower adsorption capacity compared to the chitosan itself.…”

Section: Ccts-thr Adsorption Capacitymentioning

confidence: 99%

“…Chitosan, an N-deacetylated product of chitin which can be obtained in large quantity from crustacean shells, is a promising natural polymer for resin base material because of their unique properties, such as high chelating ability compared to other natural polymers obtained L. Hakim et al from seafood wastes, easy derivatization, and biodegradability [23]. The reactive amino groups in chitosan provide easiness in introducing various moieties for wider applications in solid phase extraction.…”

mentioning

confidence: 99%

Synthesis of cross-linked chitosan functionalized with threonine moiety and its application to on-line collection/concentration and determination of Mo, V and Cu

Hakim

Sabarudin

Oshita

et al. 2008

Talanta

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A novel chitosan-based resin functionalized with threonine moiety was synthesized, and applied to the collection/concentration of Mo, V, and Cu in environmental water samples, followed by their determination using inductively coupled plasma-atomic emission spectrometer (ICP-AES). The synthesized resin, crosslinked chitosan-threonine (CCTS-Thr), showed good adsorption behavior toward trace amounts of Mo, V, and Cu in a wide pH range.The adsorbed elements can be easily eluted using 2 mol L -1 of nitric acid, and their recoveries were found to be 90-100%. The CCTS-Thr was packed in a mini-column, which was then installed in a computer-controlled auto-pretreatment system (Auto-Pret System) for on-line trace-elements collection and determination by ICP-AES. Experimental parameters related to the improvement of sensitivity and reproducibility were optimized. The limits of detection (LODs) for target metals were found to be in sub-ppb level. The proposed method with L. Hakim et al. CCTS-Thr resin was successfully applied to the determination of Mo, V, and Cu in environmental water samples. The recovery test showed that common matrices which exist in environmental water samples did not interfere with the determination.

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Metal complexation by chitosan and its derivatives: a review

Cited by 1,043 publications

References 69 publications

Facile Preparation of Biocomposite from Prawn Shell Derived Chitosan and Kaolinite-Rich Locally Available Clay

Facile Preparation of Biocomposite from Prawn Shell Derived Chitosan and Kaolinite-Rich Locally Available Clay

Synthesis of novel chitosan resin derivatized with serine diacetic acid moiety and its application to on-line collection/concentration of trace elements and their determination using inductively coupled plasma-atomic emission spectrometry

Synthesis of cross-linked chitosan functionalized with threonine moiety and its application to on-line collection/concentration and determination of Mo, V and Cu

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