Removal of arsenic from contaminated drinking water by a chitosan/chitin mixture

Elson, C. M.; Davies, D.; Hayes, E.R.

doi:10.1016/0043-1354(80)90190-6

Cited by 69 publications

(21 citation statements)

References 5 publications

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“…Chitin is first prepared from shells of Crustacea at low-cost by removing other components, such as calcium, and proteins, by treatment with acids and alkalines. Chitin and chitosan are excellent natural adsorbents [333][334][335] with high selectivities due to the following reasons:…”

Section: Biosorbentsmentioning

confidence: 99%

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Arsenic removal from water/wastewater using adsorbents—A critical review

Mohan

Pittman

2007

Journal of Hazardous Materials

3,133

1,445

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Section: Biosorbentsmentioning

confidence: 99%

“…Removal of arsenic from contaminated drinking water was also studied on a chitosan/chitin mixture [334]. The capacity of the mixture at pH 7.0 was 0.13 equiv.…”

Section: 2mentioning

confidence: 99%

Arsenic removal from water/wastewater using adsorbents—A critical review

Mohan

Pittman

2007

Journal of Hazardous Materials

3,133

1,445

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“…Among these low cost adsorbents, activated carbon, 4 silica, 5 cellulose, 6,7 and, more recently, chitin and chitosan [8][9][10] are the most extensively investigated. In this framework, numerous studies have demonstrated the effectiveness of chitosan and its derivatives products to remove metals, such as: arsenic, 11 cadmium, [12][13][14] copper, 12,15-21 lead, 13 mercury, [22][23][24] molybdenum, 23,25 nickel, 12,16 vanadium, 23 uranium, 24 zinc, 12,13 etc. In other areas, chitosan has been employed as an excellent adsorbent for the sorption of dyes, 26,27 phenols, 28 enzymes, 29 protein separations, 30 and in some enzyme immobilizations procedures.…”

Section: Introductionmentioning

confidence: 99%

[Dye molecules/copper(II)/macroporous glutaraldehyde‐chitosan] microspheres complex: Surface characterization, kinetic, and thermodynamic investigations

Jabli

Baouab

Sintès‐Zydowicz

et al. 2011

J of Applied Polymer Sci

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Chitosan microspheres loaded Cu(II) were prepared using a precipitation method and heterogeneously crosslinked with glutaraldehyde. The abilities of the binary [Cu(II)/Glut-chitosan] system for binding two acid dyes, that is, Acid blue 25 (AB25) and Calmagite (Calma) were investigated. Sorption experiments were performed using a batch process at 25 C and indicate pH dependence. Evidence for the modification of the raw chitosan polymer was provided by Fourier transform infra red spectral study, thermogravimetry, differential thermogravimetry, differential scanning calorimetry, and scanning electron microscopy analysis. Data gleaned from the thermal analyses, showed that the modification of the polymer decreases the thermal stability of the prepared materials with respect to that of the native one. The effecting factors during dye adsorption have been also studied. Thermodynamic and kinetic experiments were undertaken to assess the capacity and the rate of dyes removal on the surface of [Cu(II)/Glut-chitosan]. Experimental data were mathematically described using various kinetic models. The pseudo second-order equation was shown to fit the adsorption kinetics. The interpretation of the equilibrium sorption data complies well with the Freundlich adsorption model. Thermodynamic results indicate that the adsorption follows an exothermic process.

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“…Thus, it has been extensively used as a host material for immobilization of fine powders and nanoparticles (Miller and Zimmerman, 2010;Sarkar et al, 2012;Sankar et al, 2013). Chitosan had been employed for the removal arsenic from water, but it showed rather low sorption capacity for As(V) and even less capacity for As(III) (Elson et al, 1980;Miller and Zimmerman, 2010), which limited its application.…”

mentioning

confidence: 99%