Removal of Crystal Violet Dye from Aqueous Solutions onto Date Palm Fiber by Adsorption Technique

Alshabanat, Mashael; Al-Senani, Ghadah M.; Almufarij, Rasmiah S.

doi:10.1155/2013/210239

Cited by 82 publications

(39 citation statements)

References 19 publications

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“…However, adsorption efficiency showed a gradual decline with further rise in pH. A decrease in the surface charge density of the adsorbent at higher pH values may have resulted in an electrostatic repulsion of the phenol molecules as reported previously [30].…”

Section: Effect Of Phsupporting

confidence: 65%

Phenol Adsorption onto Various Soil Composite Membranes: Insight into Process Kinetics, Modelling and Optimisation Using Response Surface Methodology

Goswami¹

2015

Hydrol Current Res

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Section: Effect Of Phsupporting

confidence: 65%

Phenol Adsorption onto Various Soil Composite Membranes: Insight into Process Kinetics, Modelling and Optimisation Using Response Surface Methodology

Goswami¹

2015

Hydrol Current Res

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“…The reduction in the per cent removal of dye at elevated pH indicated presence of attractive forces between positively charged dye moieties and adsorbent particles at lower pH values. It may be assumed that an increase in pH of the solution might have caused a decrease in the surface charge density of the adsorbent resulting in an electrostatic repulsion of the dye molecules (Alshabanat et al 2013). …”

Section: Effect Of Variation In Initial Solution Ph and Timementioning

confidence: 99%

Mathematical modelling and optimization of synthetic textile dye removal using soil composites as highly competent liner material

Das

Banerjee

Mondal

2014

Environ Sci Pollut Res

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Soil is widely used as adsorbent for removing toxic pollutants from their aqueous solutions due to its wide availability and cost efficiency. This study investigates the potential of soil and soil composites for removal of crystal violet (CV) dye from solution on a comparative scale. Optimisation of different process parameters was carried out using a novel approach of response surface methodology (RSM) and a central composite design (CCD) was used for determining the optimum experimental conditions, as well as the result of their interactions. Around 99.85 % removal of CV was obtained at initial pH 6.4, which further increased to 99.98 % on using soil and cement composite proving it to be the best admixture of those selected. The phenomenon was found to be represented best by the Langmuir isotherm at different temperatures. The process followed the pseudo-second-order kinetic model and was determined to be spontaneous chemisorption in nature. This adsorbent can hence be suggested as an appropriate liner material for the removal of CV dye.

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“…The linear form of Langmuir's isotherm model is expressed as; Where q m the maximum value of adsorptive capacity (mg/g), K L , is the Langmuir constant (L/mg) which is related to the energy of adsorption are obtained from the intercept and slope of the plot respectively [28]. The constants m q and K L were calculated from the slope and intercept of the linear plot of C e /q e versus C e .…”

Section: Adsorption Isothermsmentioning

confidence: 99%

The Removal of Single and Binary Basic Dyes from Synthetic Wastewater Using Bentonite Clay Adsorbent

Esan¹

2019

AJPST

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In order to broaden the application of Bentonite clay, an easily obtainable and bio-available low cost adsorbent, it was employed for the decolourization of synthetic wastewater consisting of single and binary basic dyes (Malachite green and Rhodamine b). The adsorbent was used as obtained without any further modification and also characterized for its specific surface area, point of zero charge and its surface functional groups pre and post dyes sorption was determined using Fourier Transform Infrared Spectroscopy (FTIR). Batch adsorption methods were employed in order to study the effects of pH, Ionic strength and contact time in the single solute system. The parameters of sorption of Rhodamine B (RDB) and Malachite green (MG) were obtained and fitted to three isotherm models; Freundlich, Langmuir and Temkin. The Freundlich plot analysis indicated the process occurred via heterogeneous coverage of adsorbent by both dyes. The kinetics of adsorption data were analyzed using the; pseudo-first order, pseudo-second order, Intraparticle diffusion, film diffusion, and Boyd kinetic models. Over the study of these parameters, the film diffusion mechanism was found to predominate in the sorption process of the dyes. Competitive sorption studies were carried out by using both dyes as either the adsorbate of interest or as the interfering specie. The competitive co-coefficient values obtained from interfering MG in RDB removal were significantly lower than those obtained from interfering RDB in MG removal, indicating that the presence of RDB in the aqua matrix had antagonistic effect on MG adsorption by Bentonite.

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Removal of Crystal Violet Dye from Aqueous Solutions onto Date Palm Fiber by Adsorption Technique

Cited by 82 publications

References 19 publications

Phenol Adsorption onto Various Soil Composite Membranes: Insight into Process Kinetics, Modelling and Optimisation Using Response Surface Methodology

Phenol Adsorption onto Various Soil Composite Membranes: Insight into Process Kinetics, Modelling and Optimisation Using Response Surface Methodology

Mathematical modelling and optimization of synthetic textile dye removal using soil composites as highly competent liner material

The Removal of Single and Binary Basic Dyes from Synthetic Wastewater Using Bentonite Clay Adsorbent

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