Simultaneous Removal of Azo and Phthalocyanine Dyes from Aqueous Solutions Using Weak Base Anion Exchange Resin

Kaušpėdienė, Danutė; Gefenienė, Audronė; Kazlauskienė, Eglė; Ragauskas, Romas; Selskienė, Aušra

doi:10.1007/s11270-013-1769-9

Cited by 14 publications

(10 citation statements)

References 36 publications

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“…In the FT-IR spectrum of the weakly basic anion exchanger Purolite A 847 with loaded azo-(Lanasyn Navy M-DNL) and phthalocyanine (C.I. Acid Blue 249) dyes, the vibrations at 1042 nm and 1032 nm related to -SO 3 -groups were detected by Kaušpėdienė et al [35]. Although ion exchange is a significant mechanism in dyes sorption, some extent of physical adsorption can also occur.…”

Section: Adsorption Equilibrium and Retention Mechanismsmentioning

confidence: 96%

“…Reactive Black 5 and the strongly basic anion exchangers of polyacrylic matrices are shown in Figure 6. Kaušpėdienė et al [35,36] also observed that more than one interaction was involved in dyes sorption on Purolite A 847 of polyacrylic matrix: ion exchange and nonelectrostatic interactions. The studies on the sorption of dyes and organic compounds on the ion exchangers reported so far showed that the size of the sorbate molecules has a considerable effect on the sorption degree.…”

Section: Adsorption Equilibrium and Retention Mechanismsmentioning

confidence: 99%

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Anion Exchange Resins as Effective Sorbents for Removal of Acid, Reactive, and Direct Dyes from Textile Wastewaters

Wawrzkiewicz¹,

Hubicki²

2015

Ion Exchange - Studies and Applications

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Coloured wastewaters are a consequence of batch processes in both dye-manufacturing and dye-consuming industries. Dyes are widely used in a number of industries, such as textile and leather dyeing, food, cosmetics, paper printing, gasoline, with the textile industry as the largest consumer. Dyeing as a fundamental operation during textile fibre processing causes the production of more or less coloured wastewaters, depending on the degree of fixation of dyes on substrates, which varies with the nature of substances, desired intensity of coloration, and application method. Dye bearing effluents are considered to be a very complex and inconsistent mixture of many pollutants ranging from dyes, dressing substances, alkalis, oils, detergents, salts of organic and inorganic acids to heavy metals.Thus after dyeing wastewaters are characterized not only by intensive and difficult for removal colour but also by high pH, suspended and dissolved solids, chemical and biochemical oxygen demands. Ion exchange is a very versatile and effective tool for treatment of aqueous hazardous wastes including dyes. The role of ion exchange in dye effluents treatment is to reduce the magnitude of hazardous load by converting them into a form in which they can be reused, leaving behind less toxic substances in their places or to facilitate ultimate disposal by reducing the hydraulic flow of the stream bearing toxic substances. Another significant feature of the ion exchange process is that it has the ability to separate as well as to concentrate pollutants. Taking into account high capacity and selectivity of ion exchange resins for different dyes, they seem to be proper materials for dyes sorption from textile effluents. The aim of the paper is to study the removal of the acid, reactive and direct textile dyes such as C.I. Acid Orange 7, C.I. Reactive Black 5 and C.I. Direct Blue 71 on the commercially available anion exchangers (Lewatit Mono

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Section: Adsorption Equilibrium and Retention Mechanismsmentioning

confidence: 96%

Section: Adsorption Equilibrium and Retention Mechanismsmentioning

confidence: 99%

Anion Exchange Resins as Effective Sorbents for Removal of Acid, Reactive, and Direct Dyes from Textile Wastewaters

Wawrzkiewicz¹,

Hubicki²

2015

Ion Exchange - Studies and Applications

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“…Aer certain time (t) of adsorption, adsorbent was separated from solution using external magnet and the unadsorbed MB concentration in the solution was determined using a UV-Vis spectrophotometer at l max of 664 nm. The MB uptake and percentage adsorption were calculated using eqn (1) and (2).…”

Section: Adsorption Studiesmentioning

confidence: 99%

Synthesis of nitrogen doped carbon quantum dots/magnetite nanocomposites for efficient removal of methyl blue dye pollutant from contaminated water

et al. 2018

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“…14) using the Arrhenius expression [14,15] in Eq. (10) where A, Ea, R and T are the pre-exponential factor, activation energy, gas constant and temperature respectively.…”

Section: Diffusion Dynamics Studymentioning

confidence: 99%

Diffusion Dynamics of Metal Ions Uptake at the CarboxylatedEpichlorohydrin Red Onion Skin Extract Resin – Aqueous Interface

Ezeani¹

2017

IJERA

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Investigation into the diffusion dynamics of Mn 2+, Fe 2+ and Pb 2+ ions uptake from aqueous solution by chemically modified red onion skin extract was carried out. The polyhydroxylic extract of red onion skin was utilized in the synthesis of carboxylated-epichlorohydrin red onion skin extract resin (CERR). The fourier transform infrared spectra of red onion skin extract and CERR exhibited variations in bond interactions which was ascribed to the structural modification of the extract to yield CERR. Predictions of the mechanism of diffusion dynamics were carried out by applying the data resolved from the fractional attainment of equilibrium at varied times into the Vermeulen diffusion models within the temperature range of 29 to 70°C. The predominance of film diffusion mechanism was established from the smaller values of its diffusion coefficients as compared to those of particle diffusion. The film diffusion coefficient values were lowest at 29°C, indicating the most probable temperature condition for optimum exchange result with the CERR. Deductions from utilizing the Arrhenius type temperature dependence equation gave negative values of activation energy (-7.223 kJ/mol for Mn 2+ , -6.898 kJ/mol for Fe 2+ and -13.957 kJ/mol for Pb 2+ ions); which suggests that increase in temperature from 29 to 70°C, lowered the rate of the exchange reaction.

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Simultaneous Removal of Azo and Phthalocyanine Dyes from Aqueous Solutions Using Weak Base Anion Exchange Resin

Cited by 14 publications

References 36 publications

Anion Exchange Resins as Effective Sorbents for Removal of Acid, Reactive, and Direct Dyes from Textile Wastewaters

Anion Exchange Resins as Effective Sorbents for Removal of Acid, Reactive, and Direct Dyes from Textile Wastewaters

Synthesis of nitrogen doped carbon quantum dots/magnetite nanocomposites for efficient removal of methyl blue dye pollutant from contaminated water

Diffusion Dynamics of Metal Ions Uptake at the CarboxylatedEpichlorohydrin Red Onion Skin Extract Resin – Aqueous Interface

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