Color difference measurement and color removal from dye wastewaters using different adsorbents

Yeh, Ruth Yu‐Li; Thomas, Adrian

doi:10.1002/jctb.280630108

Cited by 82 publications

(36 citation statements)

References 7 publications

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“…Color removal from textile effluents has been the target of great attention in the last few years, not only because of its potential toxicity, but mainly due to the potential environmental impact. 4,5 Different treatments for the removal of dyes have been used such as special processes of filtration, activated mud, chemical coagulation, adsorption on activated carbon and processes of photodegradation. 6 The solution to the problem depends on the use of different technological process.…”

Section: Introductionmentioning

confidence: 99%

Elimination of dyes from aqueous solutions using iron oxides and chitosan as adsorbents: a comparative study

Pirillo¹,

Pedroni²,

Rueda³

et al. 2009

Quím. Nova

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Recebido em 5/9/08; aceito em 4/12/08; publicado na web em 7/5/09This work investigates the adsorption of Alizarin, Eriochrome Blue Black R and Fluorescein using chitosan, goethite and magnetite as adsorbents. For Alizarin, the best adsorbent is chitosan with a Langmuir parameter of 15.8 mmol dye/g adsorbent. For Eriochrome Blue Black R only 1.94 mmol dye/g chitosan is adsorbed. Langmuir parameters for the Alizarin adsorption on both iron oxides display one or two orders of magnitude lower than for chitosan and two orders of magnitude lower in the case of Eriochrome Blue Black R. Fluorescein does not adsorb in appreciable amounts on chitosan and it presents the lower affinity on the iron oxides.

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Section: Introductionmentioning

confidence: 99%

Elimination of dyes from aqueous solutions using iron oxides and chitosan as adsorbents: a comparative study

Pirillo¹,

Pedroni²,

Rueda³

et al. 2009

Quím. Nova

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“…The important characteristics of the Langmuir isotherm can be expressed by a dimensionless parameter which is defined by RL [46], which is defined by eqn. log q e = log K F + 1/n log C e (6) where K F and 1/n are constants related to the Freundlich adsorption capacity and the adsorption intensity of the adsorbent, respectively. q e is the amount adsorbed at equilibrium (mg g -1 ), C e is the equilibrium concentration of the adsorbate.…”

Section: Resultsmentioning

confidence: 99%

“…Bulk density was determined using the method of Okieimen et al [33]. The pH is determined according to (NF V 05-108, 1970) by immersing a 1 g sample in 100 mL of distilled water and stirring and heating for 1 h. The dosage of the surface features was performed by Boehm titration method [6] to determine the quantities of the lactone function, phenolic, carboxylic and basic on fibers of activated artichoke.…”

Section: Adsorbatementioning

confidence: 99%

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Adsorption of Auramine-O Using Activated Globe Artichoke Leaves: Kinetic and Isotherm Studies

Kahina¹,

Nasser²

2017

Asian J. Chem.

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The aim of this work was to study the removal of auramine-O (Au-O) from aqueous solution using powder prepared from globe artichoke leaves chemically activated with NaOH solution. The physico-chemical characteristics of the samples were performed and the characterization by FT-IR analysis has been carried out to examine the structure of globe artichoke leaves before and after activation. Scanning electron microscope was used to analyze the surface change of the globe artichoke leaves before and after adsorption of dye solution. A comparison of two models on the overall adsorption rate showed that the kinetic of adsorption was better described by the pseudo-second order model. The equilibrium data fitted very well to Langmuir model with maximum monolayer adsorption capacity of 344.8 mg g -1 at 298 K. This study shows that the globe artichoke leaves can be used as low cost alternative adsorbent for removal of auramine-O. Asian Journal of Chemistry; Vol. 29, No. 8 (2017), 1646-1650 as an adsorbent to remove the basic dyes auramine-O (Au-O) in an aqueous solution. The equilibrium analyzes were conducted to understand the sorption processes.

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“…Color removal from textile effluents has been the target of great attention in the last few years, not only because of its potential toxicity, but mainly due to its visibility problems (Yu-Li and Thomas, 1995;Morais et al, via UV/ozone treatment, photocatalytic degradation, electrochemical reduction etc.) may have a certain efficiency in the removal of dyes, but their initial and operational costs are so great, that they constitute an inhibition to dying and finishing industries (Kang et al 2000;Churchley, 1998;Ogutveren and Koparal, 1994).…”

Section: Introductionmentioning

confidence: 99%

Sorption-desorption isotherms of dyes from aqueous solutions and wastewaters with different sorbent meterials

2013

Global NEST Journal

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1999). Recent estimates indicate that approximately 12% of synthetic textile dyes used each year are lost during manufacture and processing operations and 20% of these lost dyes enter the environment through effluents that result from the treatment of industrial wastewaters (Hwang and Chen, 1993;Nawar and Doma, 1989 ABSTRACTThe ability of activated carbon and different low-cost by-products and waste material as sorbents to remove various reactive dyes from aqueous solutions and wastewaters was investigated. All aqueous dye solutions contained 2,000 mg l -1 NaCl, to mimic real dye wastewater. Batch kinetic and isotherm experiments were conducted to determine the sorption-desorption behavior of the examined dyes from aqueous solutions and wastewaters by different sorbents, including activated carbon, fly ash, bentonite and bleaching earth. The results from the aqueous solutions indicate that the form of the isotherm equation is not necessarily unique for best description of both sorption and desorption data. The values of the isotherm parameters are not the same, indicating a significant hysteresis effect.Of the 9 sorption systems tested, 5 are best described by the Freundlich, 3 by the Langmuir and 1 by the linear sorption model. Of the 7 desorption systems tested, 5 are best described by the Freundlich and 2 by the linear model. In all cases, the sorption capacity for dye removal was higher for activated carbon, followed by fly-ash and then by bentonite.

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Color difference measurement and color removal from dye wastewaters using different adsorbents

Cited by 82 publications

References 7 publications

Elimination of dyes from aqueous solutions using iron oxides and chitosan as adsorbents: a comparative study

Elimination of dyes from aqueous solutions using iron oxides and chitosan as adsorbents: a comparative study

Adsorption of Auramine-O Using Activated Globe Artichoke Leaves: Kinetic and Isotherm Studies

Sorption-desorption isotherms of dyes from aqueous solutions and wastewaters with different sorbent meterials

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