Modification of Perlite for Use as a Thin-Layer Chromatographic Adsorbent

Karakaş, R.; Yüksel, Ümran

doi:10.1093/chromsci/36.10.499

Cited by 14 publications

(3 citation statements)

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“…In their natural form, these materials are soft and have a tendency to agglomerate or form gels. [25,26] The characterization of chitosan-coated perlite beads and evaluation of their adsorption capacity for Cr(VI) are reported in this article. It is necessary to provide physical support and increase the accessibility of the metal binding sites for process applications.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Chromium(VI) on Chitosan‐Coated Perlite

Hasan

Krishnaiah

Ghosh

et al. 2003

Separation Science and Technology

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Chitosan-coated perlite beads were prepared by drop-wise addition of a liquid slurry containing chitosan and perlite to an alkaline bath. The beads were characterized by SEM and EDS x-ray microanalysis. The chitosan content of the beads was 23%, as determined by a pyrolysis method. Adsorption of hexavalent chromium from aqueous solutions on chitosan-coated perlite beads was studied under both equilibrium and dynamic conditions. The effect of pH on adsorption was also investigated. The data were fitted to the Langmuir adsorption isotherm.The adsorption capacity of chitosan-coated perlite was found to be 104 mg/g of adsorbent from a solution containing 5000 ppm of Cr(VI). On the basis of chitosan, the capacity was 452 mg/g of chitosan. The capacity was considerably higher than that of chitosan in its natural and modified forms, which was in the range of 11.3 to 78 mg/g of chitosan. The beads loaded with chromium were regenerated with sodium hydroxide solution of different concentrations. A limited number of adsorption-desorption cycles indicated that the chitosan-coated beads could be regenerated and reused to remove Cr(VI) from waste streams.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Chromium(VI) on Chitosan‐Coated Perlite

Hasan

Krishnaiah

Ghosh

et al. 2003

Separation Science and Technology

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“…This method is used in biological research and in inorganic analysis [4][5][6]. Thin layers made from different sorbents: cellulose, nitrocellulose, alumina, silica gel, perlite [7], etc. Effectively use combination of TLC and thinlayer electrophoresis.…”

Section: Thin Layer Electro-chromatographymentioning

confidence: 99%

Separating a Mixture of Re (VII), Mo (VI), V (V) and W (VI) Ions Using the Thin Layer Electro-Chromatography Method on a Thin Layer of Perlite

Moalla¹

2015

SJAC

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This paper presents a new method for separating Rhenium, Molybdenum, Vanadium and Tungsten ions on a thin layer of Perlite using the thin layer -electro-chromatography method. This method is based on the combination between chromatographic forces and electric forces by applying different voltages on the separation plate for different times using several electrolytes as different mobile phase concentrations, at different applying field duarations on the process. This method also shows the possibility of using Perlite as a thin layer in this kind of separation process, which can apply in the separation of other types of biochemistry and inorganic ions This relatively simple method is cost effective.

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“…12 A number of minerals were used in order to obtain stationary phases for thin layer chromatography. Therefore, activated bentonite, 13 Sinai clay, 14 China clay, 15 modified perlite, 16 volcanic tuff 9,10,17 and diatomaceous earth 12,[18][19][20][21] were successfully used as stationary phases in thin layer chromatography.…”

Section: Introductionmentioning

confidence: 99%