Adsorption of gold(III), platinum(IV) and palladium(II) onto glycine modified crosslinked chitosan resin

Ramesh, A.; Hasegawa, Hiroshi; Sugimoto, Wataru; Maki, Takeshi; Ueda, Kazuyuki

doi:10.1016/j.biortech.2007.07.008

Cited by 451 publications

(233 citation statements)

References 36 publications

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“…However, if both adsorbents are compared, it can be observed that bentonite gives adsorption capability higher than zeolite does. It is agreed with quantitative evaluation of the experimental data using Freundlich model [20]. The Freundlich model assumes heterogeneous adsorption due to the diversity of the adsorption sites or the diverse nature of adsorbate.…”

Section: Effect Of Afb1 Concentrationsupporting

confidence: 67%

Adsorption of Aflatoxin B1 in Corn on Natural Zeolite and Bentonite

Nuryono¹,

Agus²,

Wedhastri³

et al. 2012

Indones. J. Chem.

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Section: Effect Of Afb1 Concentrationsupporting

confidence: 67%

Adsorption of Aflatoxin B1 in Corn on Natural Zeolite and Bentonite

Nuryono¹,

Agus²,

Wedhastri³

et al. 2012

Indones. J. Chem.

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“…Several methods including adsorption, solvent extraction, ion exchange, cementation, have been utilized more often than pyrometallurgical method. 2,3) Among those methods, adsorption is considered as a promising technology because this method uses a simple equipment, and shows low cost, ease operation, and high efficiency even at low metal-ion concentration 4,5,6) . An effective and selective adsorbent should consist of a stable and insoluble porous matrix having suitable active groups (typically organic groups) that interact effectively with gold ion.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Au(III), Cu(II) and Ni(II) on Magnetite Coated with Mercapto Groups Modified Rice Hull Ash Silica

Nuryono¹,

Muliaty²,

Rusdiarso³

et al. 2014

J.I.E.

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Adsorption of Au(III) in multi-metal systems Au/Cu/Ni on mercapto modified silica coated on magnetite (Fe 3 O 4 /SiO 2 -SH) has been studied. Fe 3 O 4 /SiO 2 -SH was synthesized via sol-gel process by using magnetite obtained through co-precipitation of Fe 2+ /Fe 3+ salt mixture with NH 4 OH as the precipitating solution, sodium silicate solution extracted from rice hull ash and 3-mercaptopropyltrimethoxysilane (MPTMS) as the mercapto group source. Fe 3 O 4 /SiO 2 -SH was characterized with Fourier transform infrared (FTIR) spectrophotometer, X-ray diffraction (XRD) and ion chromatography for sulfur analysis. Optimization of Au(III) adsorption in a batch system was carried out as function of pH, contact time and ion concentration. Adsorption kinetics was evaluated with pseudo-first order and pseudo-second order models based on the data of contact time variation, while the adsorption isotherm was studied based on Langmuir and Freundlich models. The adsorbed metal ions Au(III), Cu(II) and Ni(II) quantitatively were calculated based on the difference of metal concentrations before and after adsorption analyzed with flame atomic absorbance spectrophotometer (FAAS). Results of characterization showed that Fe 3 O 4 /SiO 2 -SH has been successfully synthesized. Adsorption of Au(III) on Fe 3 O 4 /SiO 2 -SH slightly decreased with increasing the pH in a range of 2.0-6.0 and fits to pseudo-second order model with the rate constant of 1.37x10 -3 g mg -1 min -1 . Fe 3 O 4 /SiO 2 -SH shows a linear plot of Langmuir isotherm model with adsorption the capacity for Au(III) of 125 mg/g. Adsorption on multimetal systems shows that capacity of Au(III) on Fe 3 O 4 /SiO 2 -SH is higher than that of Cu(II) and Ni(II), and high selectivity for Au(III) toward Cu(II) and Ni(II) ions.

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“…Recently, biosorption technology has been found to be a simple and clean method to recover platinum from aqueous solution. Some of the adsorbents such as orange peel, grape wastes and rice husk (Parajuli et al 2006;Ramesh et al 2008;Parajuli et al 2009) were used for removing toxic elements and recovering precious metals from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Study on the adsorption behavior of modified persimmon powder biosorbent on Pt(IV)

Gong

Guo

Liang

et al. 2015

Int. J. Environ. Sci. Technol.

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A glycine-modified persimmon powder was used as biosorbent for platinum adsorption in aqueous solution. The combined effects of modifying agent amount, modifying time and temperature on Pt(IV) adsorption by persimmon biosorbent were investigated, from which the optimum modification conditions with modifying agent amount of 50 %, temperature of 333 K and contact time of 4.0 h were determined. The influences of solution initial pH, solid-to-liquid ratio, contact time, temperature and initial concentration on the Pt(IV) adsorption were studied systematically by batch experiments. The optimum modification conditions were determined as follows: chemical reagent amount of 50 %, temperature of 333 K and contact time of 4.0 h. From the adsorption kinetic analysis, it was found that the adsorption kinetics of glycine-modified persimmon powder followed a pseudo-second-order kinetic model. The adsorption isotherms of the crude persimmon powder and glycine-modified persimmon powder were analyzed with the BET-type adsorption isotherm. The adsorption mechanism of Pt(IV) on the glycine-modified persimmon was considered to be adsorption-reduction mechanism. The results achieved from this study indicated that the novel persimmon adsorbent could be applied to recover trace Pt(IV) ions from a concentrated chloride solution.

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Adsorption of gold(III), platinum(IV) and palladium(II) onto glycine modified crosslinked chitosan resin

Cited by 451 publications

References 36 publications

Adsorption of Aflatoxin B1 in Corn on Natural Zeolite and Bentonite

Adsorption of Aflatoxin B1 in Corn on Natural Zeolite and Bentonite

Adsorption of Au(III), Cu(II) and Ni(II) on Magnetite Coated with Mercapto Groups Modified Rice Hull Ash Silica

Study on the adsorption behavior of modified persimmon powder biosorbent on Pt(IV)

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