Dynamic and equilibrium studies on adsorption of Cr(VI) ions onto binary bio-polymeric beads of cross linked alginate and gelatin

Bajpai, Jaya; Shrivastava, Ruma; Bajpai, A. K.

doi:10.1016/j.colsurfa.2004.01.021

Cited by 124 publications

(56 citation statements)

References 34 publications

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“…2, a higher removal capacity was observed at 35ºC than at 30ºC and 40ºC. The higher the temperature, the more active sites presented in immobilized beads due to the enhanced protonation and depronation rate of functional groups at higher temperature [31]. However, the activity of bacteria was slightly reduced at 40ºC, suggesting that the optimum temperature of this bacterial strain is 35ºC.…”

Section: Effect Of Ph On Tl Removalmentioning

confidence: 81%

Bioremoval of Tl (I) by PVA-Immobilized Sulfate-Reducing Bacteria

Zhang¹,

Li²,

Pang³

et al. 2017

Pol. J. Environ. Stud.

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Section: Effect Of Ph On Tl Removalmentioning

confidence: 81%

Bioremoval of Tl (I) by PVA-Immobilized Sulfate-Reducing Bacteria

Zhang¹,

Li²,

Pang³

et al. 2017

Pol. J. Environ. Stud.

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“…This is mainly attributed to the relatively large external specific high surface areas, high adsorption kinetics, and relatively low cost of these polymer beads. 26,27 Anion-exchange resins made from St-DVB present good removal capabilities at pH 3-4, whereas within the alkaline or neutral pH range, their removal capabilities decrease drastically. 28 Data on the binding of amines and other bases to metal ions are available.…”

Section: Introductionmentioning

confidence: 98%

Production of microporous resins for heavy‐metal removal. II. Functionalized polymers

Cardoso

Ortíz-Palacios

Manero

2007

J of Applied Polymer Sci

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Ion-exchange polymers were used successfully in water-treatment operations. In this study, three ion-exchange resins based on 4-vinylpyridine and divinylbenzene functionalized with N-oxide groups were obtained. Their ion-adsorption properties were measured in solutions containing chromium at concentrations of 4 and 500 ppm with column and batch equilibrium techniques. The removal efficiency of the chromium ions with HCl was observed to increase after the protonation of the N-oxide groups. The resins could be reused after 10 cycles with the metal removal efficiency maintained at higher than 95%. These studies evidenced a strong correlation between the morphology and ionic group content in the resin and its chromium ion sorption capability.

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“…The removal of coloured and colourless organic pollutants from industrial wastewater is considered as an important application of adsorption processes (Al-qodah 2000). Adsorption processes have been reported as low-cost techniques for the treatment of organic pollutants present in water (Bajpai et al 2000(Bajpai et al , 2004Shah et al 2012;Chowdhury and Saha 2012;Djebbar et al 2012;Belhachemi and Addoun 2011). Activated carbon (AC) is the most common adsorbent for adsorption process due to its effectiveness and versatility.…”

Section: Introductionmentioning

confidence: 99%

Removal of methyl orange by activated carbon modified by silver nanoparticles

et al. 2013

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In this work, the removal of methyl orange (MO) dye by adsorption on silver nanoparticles (AgNPs) coated activated carbon (AC) has been studied. The effect of various process parameters has been investigated by the column adsorption technique. Equilibrium adsorption data of MO were carried out at room temperature. Using AgNPs-coated AC, 72.5 % of MO was removed, whereas only 50.0 % when using AC after reacting for 16 h with an initial MO concentration of 2 mg/L (pH = 7). The equilibrium time is independent of the initial dye concentration and the percentage removal of MO increased with increase in contact time. The adsorption data were analyzed using adsorption isotherm. The characteristic parameters for isotherm and related correlation coefficients were determined from graphs of their linear equations. Kinetic studies showed that the adsorption of MO followed pseudosecond-order kinetics. AgNPs-coated AC is found to be suitable adsorbent for the adsorption of MO. Desorption studies were made to elucidate recovery of the adsorbate and adsorbent for the economic competitiveness of the removal system. The AgNPs-coated AC was successfully recycled for 10 successive adsorption-desorption cycles indicating its high reusability.

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Dynamic and equilibrium studies on adsorption of Cr(VI) ions onto binary bio-polymeric beads of cross linked alginate and gelatin

Cited by 124 publications

References 34 publications

Bioremoval of Tl (I) by PVA-Immobilized Sulfate-Reducing Bacteria

Bioremoval of Tl (I) by PVA-Immobilized Sulfate-Reducing Bacteria

Production of microporous resins for heavy‐metal removal. II. Functionalized polymers

Removal of methyl orange by activated carbon modified by silver nanoparticles

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