Competitive adsorption of ternary dye mixture using pine cone powder modified with β-cyclodextrin

Sushanta Debnath; Niladri Ballav; Arjun Maity; Kriveshini Pillay

doi:10.1016/j.molliq.2016.10.109

Competitive adsorption of ternary dye mixture using pine cone powder modified with β-cyclodextrin

Sushanta Debnath, Niladri Ballav, Arjun Maity, Kriveshini Pillay

Chemical Sciences

Research output: Contribution to journal › Article › peer-review

70 Citations (Scopus)

Abstract

The adsorption characteristics for the uptake of a ternary dye mixture safranine O, brilliant green and methylene blue (SO, BG and MB) by pine cone modified with β-cyclodextrin (CD) were investigated. The adsorption process primarily followed a pseudo - second order model and the rate of adsorption was inversely proportional to the initial dye concentration. The adsorption was also a multi-stage process which was limited by intraparticle diffusion. The adsorption predominately followed the Langmuir isotherm and was controlled by physisorption and electrostatic interactions. The adsorption was spontaneous and endothermic in nature. The order of performance of adsorption of the dyes was BG > SO > MB at all temperatures studied. The adsorption of BG was therefore highly favoured at all temperatures.

Original language	English
Pages (from-to)	679-688
Number of pages	10
Journal	Journal of Molecular Liquids
Volume	225
DOIs	https://doi.org/10.1016/j.molliq.2016.10.109
Publication status	Published - 1 Jan 2017

Keywords

Competitive adsorption
Pine cone
Ternary dye mixture
β-cyclodextrin

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry
Materials Chemistry

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10.1016/j.molliq.2016.10.109

Cite this

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title = "Competitive adsorption of ternary dye mixture using pine cone powder modified with β-cyclodextrin",

abstract = "The adsorption characteristics for the uptake of a ternary dye mixture safranine O, brilliant green and methylene blue (SO, BG and MB) by pine cone modified with β-cyclodextrin (CD) were investigated. The adsorption process primarily followed a pseudo - second order model and the rate of adsorption was inversely proportional to the initial dye concentration. The adsorption was also a multi-stage process which was limited by intraparticle diffusion. The adsorption predominately followed the Langmuir isotherm and was controlled by physisorption and electrostatic interactions. The adsorption was spontaneous and endothermic in nature. The order of performance of adsorption of the dyes was BG > SO > MB at all temperatures studied. The adsorption of BG was therefore highly favoured at all temperatures.",

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AU - Debnath, Sushanta

AU - Ballav, Niladri

AU - Maity, Arjun

AU - Pillay, Kriveshini

PY - 2017/1/1

Y1 - 2017/1/1

N2 - The adsorption characteristics for the uptake of a ternary dye mixture safranine O, brilliant green and methylene blue (SO, BG and MB) by pine cone modified with β-cyclodextrin (CD) were investigated. The adsorption process primarily followed a pseudo - second order model and the rate of adsorption was inversely proportional to the initial dye concentration. The adsorption was also a multi-stage process which was limited by intraparticle diffusion. The adsorption predominately followed the Langmuir isotherm and was controlled by physisorption and electrostatic interactions. The adsorption was spontaneous and endothermic in nature. The order of performance of adsorption of the dyes was BG > SO > MB at all temperatures studied. The adsorption of BG was therefore highly favoured at all temperatures.

AB - The adsorption characteristics for the uptake of a ternary dye mixture safranine O, brilliant green and methylene blue (SO, BG and MB) by pine cone modified with β-cyclodextrin (CD) were investigated. The adsorption process primarily followed a pseudo - second order model and the rate of adsorption was inversely proportional to the initial dye concentration. The adsorption was also a multi-stage process which was limited by intraparticle diffusion. The adsorption predominately followed the Langmuir isotherm and was controlled by physisorption and electrostatic interactions. The adsorption was spontaneous and endothermic in nature. The order of performance of adsorption of the dyes was BG > SO > MB at all temperatures studied. The adsorption of BG was therefore highly favoured at all temperatures.

KW - Competitive adsorption

KW - Pine cone

KW - Ternary dye mixture

KW - β-cyclodextrin

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JO - Journal of Molecular Liquids

JF - Journal of Molecular Liquids

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Competitive adsorption of ternary dye mixture using pine cone powder modified with β-cyclodextrin

Abstract

Keywords

ASJC Scopus subject areas

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