Colour removal from aqueous solutions. Part I. Flotation

Mavros, Paul; Daniilidou, Anastasia; Lazaridis, Nikolaos; Stergiou, L.

doi:10.1080/09593339409385467

Cited by 46 publications

(28 citation statements)

References 16 publications

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“…Methods such as coagulation [14], flocculation [15], froth flotation [16], filtration [17], ion exchange [18], aerobic and anaerobic treatment [19][20][21], and reverse osmosis [22] are commonly used to treat effluents, but these methods are not completely effective or economically advantageous in treating these compounds due to cost factors and the formation of by-products [3,23].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of the reactive gray BF-2R dye on orange peel: kinetics and equilibrium studies

Nascimento

Duarte

Campos

et al. 2014

Desalination and Water Treatment

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A B S T R A C TAdsorption of the reactive gray BF-2R dye from an aqueous solution using orange peel as the adsorbent was investigated by the batch method. Experiments characterizing the chemical and physical properties of the adsorbent found that orange peel is a microporous material with a pH zpc 3.9 and containing carboxylic and sulfonic groups. The greatest adsorption capacity was obtained using a 2 3 factorial design for 0.25 g of adsorbent, particle size < 0.419 mm and at 300 rpm. The pseudo-second-order model provided the best fit of the experimental data. The Weber-Morris model indicated that two or more mechanisms control the process. Statistical analysis of the equilibrium studies indicated that there was not a significant difference between the Langmuir and the Fritz-Schlunder models according to an F-test. The results showed that orange peel can remove the reactive gray BF-2R dye.

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Section: Introductionmentioning

confidence: 99%

Adsorption of the reactive gray BF-2R dye on orange peel: kinetics and equilibrium studies

Nascimento

Duarte

Campos

et al. 2014

Desalination and Water Treatment

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“…The removals of such compounds at such low levels are a difficult problem. Physicochemical techniques such as coagulation, flocculation, ozonation, reverse osmosis and adsorption on activated carbon, manganese oxide, silicagel and clays are among the methods employed [7][8][9][10][11][12][13]. The biological processes typically accomplish very little towards color removal [14].…”

Section: Introductionmentioning

confidence: 99%

The adsorption kinetics of the cationic dye, methylene blue, onto clay

Gürses

Doğar

Yalçın

et al. 2006

Journal of Hazardous Materials

476

186

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“…3 A number of technologies are available to control and reduce the water pollution with dye contaminants. Among them are coagulation 4 , filtration 5 , ionexchange, 6 electrolysis, 7 advanced oxidation processes 8 , foam flotation, 9 etc. The removal of dyes in an economic way remains an important problem, although a number of systems have been developed using adsorption techniques.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Removal of Malachite Green from Model Aqueous Solutions by Chemically Modified Waste Green Tea Biomass

Indolean

Burcă²,

Măicăneanu³

2017

ACSi

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The adsorption of malachite green (MG) from aqueous solution by waste green tea (WGT) biomass was investigated. A series of experiments in batch conditions were conducted in order to assess the MG removal on WGT, following adsorbent quantity and temperature influences. Maximum removal efficiency for untreated WGT was 89% (4 g biomass, 100 mL solution of 94 mg/L, 316 K). It was found that the adsorption of MG increased by increasing temperature from 296 to 316 K. Thermodynamic parameters (ΔH°, ΔS°, ΔG°) were calculated, and indicated that dye adsorption onto the studied biomass was endothermic and non-spontaneous. Six chemical treatments were tested (four acidic -H 3 PO 4 , H 2 SO 4 , HCl, and tartaric acid, one oxidant -H 2 O 2 , and one basic -NaOH) in order to study the chemical groups responsible for MG adsorption onto WGT biomass. The alkali and acidic treatments led to an increase of adsorption efficiency up to 92% and 95% (H 2 SO 4 ) respectively. The FTIR spectroscopy results emphasized the modifications of the biomass surface and how these are influencing the adsorption process.

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Colour removal from aqueous solutions. Part I. Flotation

Cited by 46 publications

References 16 publications

Adsorption of the reactive gray BF-2R dye on orange peel: kinetics and equilibrium studies

Adsorption of the reactive gray BF-2R dye on orange peel: kinetics and equilibrium studies

The adsorption kinetics of the cationic dye, methylene blue, onto clay

Adsorptive Removal of Malachite Green from Model Aqueous Solutions by Chemically Modified Waste Green Tea Biomass

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