Immobilized chitosan as biosorbent for the removal of Cd(II), Cr(III) and Cr(VI) from aqueous solutions

Copello, Guillermo Javier; Varela, Florencia; Vivot, Rocío Martinez; Díaz, Luis Eduardo

doi:10.1016/j.biortech.2007.11.055

Cited by 98 publications

(35 citation statements)

References 27 publications

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“…Adsorption isotherms are commonly used to reflect the performance of adsorbents in adsorption processes [23]. Langmuir and Freundlich isotherms were used in this work to evaluate the performance of adsorbents by the relationship between the metal uptake (q e ) and the concentration of metal ion (C e ) at equilibrium.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of Chromium from Aqueous Solution Using Hybrid Membrane of Chitosan and Silicon Dioxide

Deng¹,

Kano²,

Inoue³

2016

JCCE

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Adsorption experiment from aqueous solutions containing known amount of chromium (Cr) using hybrid membrane of chitosan and silicon dioxide was explored to evaluate the efficiency of the membrane as sorbent for Cr(VI). Some variable parameters such as pH, contact time and the dosage of the membrane were optimized. Adsorption isotherms of Cr(VI) onto the hybrid membrane were measured with varying initial concentrations under optimized condition. Furthermore, the sorption mechanism of Cr by the membrane was investigated by applying Langmuir and Freundlich isotherm equations to the data obtained. The surface morphology of the membrane was determined by SEM (scanning electron microscope) for material characterization. The concentrations of Cr in solution are determined by ICP-MS (inductively coupled plasma mass spectrometry). Hybrid membrane of chitosan and silicon dioxide can be an efficient sorbent for Cr(VI).

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Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of Chromium from Aqueous Solution Using Hybrid Membrane of Chitosan and Silicon Dioxide

Deng¹,

Kano²,

Inoue³

2016

JCCE

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“…Chitosan as an heavy metal adsorbent is very high capability however its ability limited because of the weakness such as swelling, unsatisfying mechanical properties and solubility in acidic condition 7,8 . Chitosan modified by crosslinking 9 , immobilizing into a matrix support 10 and blending 11 to form it stable on acid media and has good mechanical properties. To solve these problems, chemically crosslinked chitosan has be required.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Pb(II)-Carboxymethyl Chitosan Pec PEGDE Film as Selective Asorbent for Removal Pb(II) Ion

Hastuti¹,

Mudasir²,

Siswanta³

et al. 2017

Orient. J. Chem

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The aims of this research is to synthesize Pb(II)-Carboxymethyl Chitosan-Pectin crosslinked Polyethylene Glycol Diglisidyl Ether (Pb(II)-CCPecP) film by using templated ion of Pb 2+ as selective adsorbent for Pb(II) ion. The structure of Pb(II)-CCPecP film adsorbent were characterized by FT-IR and scanning electron microscopy (SEM). The adsorption properties of Pb(II)-CCPecP film adsorbent in order to adsorp of Pb(II) ion in presence Cu(II) and Zn(II) were evaluated. FT-IR showed visible peak at 3441 and 1628 cm -1 indicate the film adsorbent have -COOH and -OH active group. The SEM of Pb(II)-CCPecP film show smoother surface and some holes and gaps are formed. The optimum condition for adsorption of Pb(II) ions by Pb(II)-CCPecP film adsorbent was occur at pH 5 and 200 min contacting time. The adsorption of Pb(II)-CCPecP film adsorbent toward Pb 2+ was higher compared with Zn 2+ and Cu 2+ metal ion. The results revealed that the film was capable to removal of Pb(II) ion selectively in solution containing single metal ion or coexistence of three metals ion of Zn 2+ and Cu 2+ .

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“…6,18,19 In this study PEIGA-immobilised S. cerevisiae was incubated with platinum ions and viewed by SEM-EDAX. Figure 3A illustrates the biological component of the immobilised yeast cells; the light area in Fig.…”

Section: Sem-edaxmentioning

confidence: 99%

“…These include micro-particle-induced X-ray emission (micro-PIXE), scanning electron microscopy with energy-dispersive analysis of X-rays (SEM-EDAX) and transmission electron microscopy (TEM), all of which have established themselves as sensitive, qualitative, visual metal analysis techniques. [4][5][6] This work aims to compare the various techniques available in South Africa, in terms of the qualitative information generated, with regard to the interaction of platinum with fungal and yeast biomass.…”

Section: Introductionmentioning

confidence: 99%

Metal–biomass interactions: a comparison of visualisation techniques available in South Africa

et al. 2010

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Immobilized chitosan as biosorbent for the removal of Cd(II), Cr(III) and Cr(VI) from aqueous solutions

Cited by 98 publications

References 27 publications

Removal of Chromium from Aqueous Solution Using Hybrid Membrane of Chitosan and Silicon Dioxide

Removal of Chromium from Aqueous Solution Using Hybrid Membrane of Chitosan and Silicon Dioxide

Preparation of Pb(II)-Carboxymethyl Chitosan Pec PEGDE Film as Selective Asorbent for Removal Pb(II) Ion

Metal–biomass interactions: a comparison of visualisation techniques available in South Africa

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