Removal and recovery of chromium from wastewater using short chain polyaniline synthesized on jute fiber

Kumar, Parveen; Chakraborty, Saswati; Ray, Manabendra

doi:10.1016/j.cej.2007.11.004

Cited by 197 publications

(81 citation statements)

References 38 publications

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“…For example, adsorption of toxic hexavalent chromium in water was successfully carried out by this compound in powdered form. [14][15][16] The main concern of this work was to synthesize, characterize and compare the adsorption properties of the polyaniline/rice husk and polyaniline/ saw dust composites for removal of chromium (III) from water as compared to simple polyaniline in batch mode. The parameters studied include; particle size of adsorbent, influence of initial pH, dose of adsorbent, contact time interval, agitation rate and temperature.…”

Section: Introductionmentioning

confidence: 99%

Isothermal and Thermodynamical Modeling of Chromium (Iii) Adsorption by Composites of Polyaniline With Rice Husk and Saw Dust

Kanwal

Rehman

Mahmud

et al. 2012

J. Chil. Chem. Soc.

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The adsorption of Cr (III) from water by polyaniline composites with rice husk and saw dust of Eucalyptus camaldulensis has been investigated in this study. The surface of adsorbents was characterized by FT-IR. Effect of various operational conditions like agitation time, initial pH, adsorbent dose, particle size of composites and temperature were studied in batch mode. The suitability of the data was confirmed by Langmuir and Freundlich isotherms. Thermodynamic studies showed that adsorption of Cr (III) on these composites occur spontaneously. Rice husk and saw dust modified the morphology of polyaniline by preventing its aggregation and improving its adsorption capacity.

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Section: Introductionmentioning

confidence: 99%

Isothermal and Thermodynamical Modeling of Chromium (Iii) Adsorption by Composites of Polyaniline With Rice Husk and Saw Dust

Kanwal

Rehman

Mahmud

et al. 2012

J. Chil. Chem. Soc.

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“…It can be concluded that the active form of Cr(VI) that can be adsorbed by Amberlite IRA96 at pH 2 was largely HCrO 4 -ions (Sarin and Pant 2006). The slight decrease in removal from 99.8 to 96 % by changing pH from 2 to 1 can be attributed to neutral form of chromium (Kumar et al 2008). …”

Section: Effect Of Ph On Sorption Processmentioning

confidence: 99%

Removal of hazardous hexavalent chromium from aqueous solution using divinylbenzene copolymer resin

Bajpai

Dey

Jha

et al. 2012

Int. J. Environ. Sci. Technol.

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This paper presents the removal of hazardous hexavalent chromium from liquid waste streams using divinylbenzene copolymer resin Amberlite IRA 96. Important sorption parameters such as contact time, pH, resin dosage and initial metal concentration were studied at 30°C. The kinetic study was conducted using pseudo-first and pseudo-second-order kinetics at 30°C. The sorption process was found to be pH dependent. Maximum removal was obtained at pH 2 under optimized conditions. The sorption process was rapid and 99 % of the removal was achieved in first 30 min. The equilibrium data were fitted to both Langmuir and Freundlich models. The better regression coefficient (R 2 ) in Freundlich model suggests the multilayer sorption process. The value of Gibbs free energy for sorption process was found to be -12.394 kJmol -1 . The negative value indicated the spontaneity of the sorption process. Scanning electron microscope and energy dispersive X-ray spectroscopy studies were conducted to find the role of surface morphology during sorption process. The Fourier transform infrared study was conducted to identify the functional groups responsible for interaction between the resin and chromium. Desorption and regeneration studies were also carried out.

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“…Therefore, it is necessary to remove Cr(VI) from wastewater before it is discharged to the natural water bodies. Various treatment technologies such as ion exchange, electrolytic removal, membrane filtration, reverse osmosis, chemical precipitation, adsorption, and solvent extraction have been reported for the removal of Cr(VI) from waste water [25][26][27][28][29][30][31][32][33][34][35][36][37][38]. Most of these technologies are associated with high operational and maintenance cost.…”

Section: Chromium Removal From Aqueous Solutionmentioning

confidence: 99%

Polymer Nanocomposites and Cr(VI) Removal from Water

Singh¹

2013

NSTOA

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Removal and recovery of chromium from wastewater using short chain polyaniline synthesized on jute fiber

Cited by 197 publications

References 38 publications

Isothermal and Thermodynamical Modeling of Chromium (Iii) Adsorption by Composites of Polyaniline With Rice Husk and Saw Dust

Isothermal and Thermodynamical Modeling of Chromium (Iii) Adsorption by Composites of Polyaniline With Rice Husk and Saw Dust

Removal of hazardous hexavalent chromium from aqueous solution using divinylbenzene copolymer resin

Polymer Nanocomposites and Cr(VI) Removal from Water

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