Polyaniline coated magnetic carboxymethylcellulose beads for selective removal of uranium ions from aqueous solution

Arıca, M. Yakup; Bayramoğlu, Gülay

doi:10.1007/s10967-016-4828-z

Cited by 68 publications

(9 citation statements)

References 41 publications

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“…Under such condition, the beads capacity amounted to ~18 mg g −1 with initial concentration of 400 mg L −1 . The maximum adsorption capacity for uranium in literatures are as high as 447 mg g −1 in some recent reports referred earlier . In our work the resin was used to extract uranium from a very small amount of uranium solution (5 mL) with low concentrations, which restricts it to achieve its maximum capacity.…”

Section: Resultsmentioning

confidence: 92%

“…The search of suitable sorbents for the removal of uranium from aqueous medium is still in progress with some modified advance materials in recent times. Among them functionalized silica particles and adsorbents with magnetic properties are the two important ones. Apart from these synthesized materials, there is a recent trend emerging to develop the adsorbents through functionalization of various hybrid bio materials .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and study of optimization of amidoximated PAN‐DVB‐EGDMA beads for the sorption of uranium from aqueous media

Kanjilal

Singh

Bairwa

et al. 2018

Polymer Engineering & Sci

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Environmental and economic considerations have made the sorption of uranium from aqueous media a very time demanding area of research from last few decades. In this particular work, amidoximated polyacrylonitrile beads were synthesized by the reaction of hydroxyl amine hydrochloride (OH‐NH2.HCl) with macroporous crosslinked polyacrylonitrile beads, prepared through suspension polymerization techniques, using acrylonitrile (AN) as monomer and divinylbenzene and ethyleneglycoldimethacrylate as crosslinkers, in a variety of relative compositions, to modify suitably the hydrophilicity and physicochemical stability. These beads were also characterized by FT‐IR, scanning electron microscope, and thermogravimetric analysis–differential scanning calorimetry techniques to explain the morphology and chemical functionality. The beads reached its saturation capacity towards uranyl ions well within 1 h of equilibration at ~25°C, under near neutral pH conditions and the observed maximum sorption capacity was found to be ~18 mg g−1. The beads were also used for the sorption of uranium from various real water samples and showed good sorption from these samples. Reusability of the beads was also established up to the studied four cycles. These synthesized beads can potentially serve the dual purpose of the decontamination of uranium contaminated potable well water as well as to treat acidic radioactive waste generated in nuclear industry before final discharge to environment. POLYM. ENG. SCI., 59:863–872, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Synthesis and study of optimization of amidoximated PAN‐DVB‐EGDMA beads for the sorption of uranium from aqueous media

Kanjilal

Singh

Bairwa

et al. 2018

Polymer Engineering & Sci

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“…This was used for isolating a model dye, viz ., Direct Blue 75 from aqueous solution. Arica and Bayramoglu synthesized magnetic beads of carboxymethyl cellulose via ionic crosslinking. These beads were coated with polyaniline and used for the removal of U(VI) ions.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Complexation of 3d Transition Metal Ions with NR/PEO Block Copolymer in Aqueous Medium

Mrudula

Nair

2020

Polymer Engineering & Sci

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Polyethylene oxide (PEO) was chemically linked to natural rubber (NR) segments to form a block copolymer (BC), which proved to be a suitable material for complexing with selected first row transition metal ions in aqueous solution through batch adsorption method under noncompetitive mode. Optimum conditions for sorption were found to be 20 mmol/L initial concentration, pH at 6, ambient temperature, and 24 h. The order of decreasing adsorption capacity obtained is Mn(II) > Co(II) > Zn(II) > Ni(II) > Cu(II) > Fe(III). Freundlich isotherm shows the best fit indicating that the adsorption is of heterogeneous in nature. The complexation follows pseudo second‐order kinetics. Exothermic character of the complexation was confirmed by thermodynamic study. For all metal ions, the standard free energy change values are negative for the different temperatures studied, which confirms the spontaneous character of the process. At ambient temperature, the free energy change lies between −2.35 and − 7.83 kJ/mol for all complexes. Values of activation energy for all the metal ion complexation is within the range 11–25 kJ/mol, which indicates chemical interaction via activated physico–chemical adsorption. Variation in stability constant of the complexes also follows the same order as given above. POLYM. ENG. SCI., 60:661–672, 2020. © 2020 Society of Plastics Engineers

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“…Las industrias como la textil, cuero, imprenta, cosmética, productos farmacéuticos, plásticos y alimentos utilizan diferentes tipos de colorantes que también aparecen en las aguas residuales descargadas por algunas de estas industrias (1)(2)(3). La presencia de color en los cuerpos de agua incide sobre la diversidad acuática porque impide la penetración de la luz solar afectando la fotosíntesis considerablemente (1,4), además, se conoce que estos compuestos contienen aminas aromáticas, bencidina y otros compuestos aromáticos tóxicos, carcinógenos y mutagénicos para los seres humanos (3,5,6).…”

Section: Introductionunclassified

“…Contienen uno o más enlaces azo (-N=N-) como grupo cromóforo en asociación con estructuras complejas que contienen otros grupos funcionales tales como -NH 2 , -SO 3 , -OH (3,7,8). Además, estos colorantes pueden formar fuertes compuestos de coordinación con iones de metales de transición, como Ni (II), Cr (III), Co (II) y Cu (II) entre otros, formando quelatos azo-metal estables que no pueden metabolizarse ni degradarse (2,9). Existen varias técnicas para la eliminación de colorantes de las aguas residuales.…”

Section: Introductionunclassified

Equilibrio, cinética y termodinámica de la adsorción del colorante DB-86 sobre carbón activado de la cáscara de yuca

Ortega

et al. 2019

Rev MVZ Córdoba

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Objetivo. Establecer mediante experimentos por lote la capacidad de remoción, la cinética y termodinámica de adsorción del carbón activado preparado a partir de la cáscara de yuca (Manihot esculenta) en la remoción del colorante azul directo 86. Materiales y métodos. La metodología experimental consistió en la preparación del carbón activado por activación química de la cáscara de yuca con H3PO4 y su posterior calcinación a 530°C. En la caracterización se determinaron las propiedades de textura mediante el índice de yodo e índice de azul de metileno, se cuantificaron los grupos funcionales orgánicos ácidos y básicos con el método Boehm. En el estudio por lote, el efecto de varios parámetros sobre la capacidad de adsorción fueron evaluados: el pH (2,4,8 y 10), la temperatura (25,30 y 40°C) y la concentración inicial de colorante (20,40,60,80 y 100 mg/L). Tanto las características fisicoquímicas como los ensayos de adsorción del carbón activado fueron comparadas con otro de marca comercial (CAM). Resultados. Los resultados de la caracterización indican que ambos carbones tienen una química de superficie heterogénea, de naturaleza ácida para el CAY y básica para el CAM. La máxima capacidad obtenida fue 6.1 mg/g para el CAY y de 3.7 mg/g para el CAM. Los cálculos termodinámicos indican que la remoción es espontánea y para ambos carbones la cinética se ajusta al modelo de pseudo segundo orden. Conclusión. El carbón activado obtenido a partir de la cáscara de yuca puede considerarse un adsorbente eficiente en la remoción de colorantes.

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Polyaniline coated magnetic carboxymethylcellulose beads for selective removal of uranium ions from aqueous solution

Cited by 68 publications

References 41 publications

Synthesis and study of optimization of amidoximated PAN‐DVB‐EGDMA beads for the sorption of uranium from aqueous media

Synthesis and study of optimization of amidoximated PAN‐DVB‐EGDMA beads for the sorption of uranium from aqueous media

Studies on the Complexation of 3d Transition Metal Ions with NR/PEO Block Copolymer in Aqueous Medium

Equilibrio, cinética y termodinámica de la adsorción del colorante DB-86 sobre carbón activado de la cáscara de yuca

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