Copper ion adsorption by chitosan nanoparticles and alginate microparticles for water purification applications

Yu, Kun; Ho, Jackie; McCandlish, Elizabeth; Buckley, Brian; Patel, Rajesh; Li, Zhoubo; Shapley, Nina C.

doi:10.1016/j.colsurfa.2012.12.043

Cited by 114 publications

(42 citation statements)

References 44 publications

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“…2a) and with increasing pH (Fig. 2b); similar results were reported by Yu et al (2013) with reference to the increase of the size of chitosan nanoparticles with the amount of TPP added. Fig.…”

Section: Physicochemical Characterization Of the Reticulated Micro/ Nsupporting

confidence: 90%

“…Chitosan, is a natural cationic polyelectrolyte that has been used for remove cationic and anionic metals such as copper (Laus et al, 2010;Yu et al, 2013), mercury and lead (Ng et al, 2003;Qi and Xu, 2004), from aqueous solutions: it combines with metal ions by three forms: ion exchange, adsorption and chelation (Qi and Xu, 2004). The adsorption of a metal ion on chitosan depends strongly on the pH of the solution (Schmuhl et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Hexavalent chromium removal in contaminated water using reticulated chitosan micro/nanoparticles from seafood processing wastes

2015

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Section: Physicochemical Characterization Of the Reticulated Micro/ Nsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Hexavalent chromium removal in contaminated water using reticulated chitosan micro/nanoparticles from seafood processing wastes

2015

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“…The pendant amino groups of chitosan are primary cause of its higher metal ion sorption capacity and its solubility in aqueous solutions when compared to chitin. Amino and hydroxyl groups (especially at the C-3 position) on chitosan can serve as electrostatic interaction and complexation sites for metal cations [11,12]. This makes chitosan an appropriate sorbent in heavy metal uptake [13].…”

Section: Introductionmentioning

confidence: 99%

Chitosan/sporopollenin microcapsules: Preparation, characterisation and application in heavy metal removal

Sargın

Arslan

2015

International Journal of Biological Macromolecules

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“…This biopolymer has been shown to effectively remove metals such as chromium, copper, mercury and lead [7,9,25,26] from aqueous solutions. In recent years, research has been performed on novel adsorbents to maximize their adsorptive capacity [27,28]; chemical and physical modifications of chitosan have been used to increase the stability of the polymer and to improve its functionality. According to Schmuhl et al [26], chitosan forms chelates with metal ions by releasing hydrogen ions, and hence, the adsorption of a metal ion on chitosan depends strongly on the pH of the solution.…”

Section: Removal Of Heavy Metals From Water Using Chitosan and Chitosmentioning

confidence: 99%

Chitosan from Marine Crustaceans: Production, Characterization and Applications

Dima¹,

Sequeiros²,

Zaritzky³

2017

Biological Activities and Application of Marine Polysaccharides

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Chitosan is a very useful marine polysaccharide that forms structural components in the exoskeleton of crustaceans. In this chapter, the production of chitosan (CH) and chitosan reticulated micro/nanoparticles (CHM) is described. Three case studies corresponding to different effective applications of chitosan are discussed: (i) the performance of CH to destabilize oil/water emulsion waste for water clarification. It was observed that as long as colloidal charge was maintained around zero, turbidity also showed low values and water clarification was achieved. However, when the applied doses were higher than the optimum, colloidal charge and turbidity both increased, showing emulsion restabilization. Emulsions treated with the optimum chitosan doses were clarified in very short periods; (ii) CH and CHM were used as effective antibacterial agents against three different pathogenic microorganisms that are problematic for aquaculture: Vibrio alginolyticus and parahaemolyticus, and Lactococcus garvieae and the minimum bactericidal concentrations were determined; and (iii) the removal of hexavalent chromium and the comparative performance of CH versus CHM. Results showed that at pH < 2, the adsorption capacity of CHM was higher because CH is unstable. Additionally, Cr(VI) was adsorbed on CH without further reduction; in contrast, Cr(VI) adsorbed on CHM was reduced to nontoxic Cr(III).

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Copper ion adsorption by chitosan nanoparticles and alginate microparticles for water purification applications

Cited by 114 publications

References 44 publications

Hexavalent chromium removal in contaminated water using reticulated chitosan micro/nanoparticles from seafood processing wastes

Hexavalent chromium removal in contaminated water using reticulated chitosan micro/nanoparticles from seafood processing wastes

Chitosan/sporopollenin microcapsules: Preparation, characterisation and application in heavy metal removal

Chitosan from Marine Crustaceans: Production, Characterization and Applications

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