Batch separation studies for the removal of heavy metal ions using a chelating terpolymer: Synthesis, characterization and isotherm models

Azarudeen, Raja S.; Subha, R.; Jeyakumar, D.; Burkanudeen, Abdul R.

doi:10.1016/j.seppur.2013.05.043

Cited by 70 publications

(40 citation statements)

References 21 publications

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“…The values of n lies between 0 to 1 represent favorable adsorption conditions; hence, the ANAF resin has followed a favorable adsorption, and a larger value of n implies effective interaction between adsorbent and the adsorbate. [32,34,35] Finally, the reported resin is found to be a very effective hazardous metal ion-exchanger than the earlier reported resins. [5,12,18,35] CONCLUSION A novel chelating resin was synthesized for the recovery of harmful metal ions.…”

Section: Freundlich Isotherm Modelmentioning

confidence: 76%

“…[32,34,35] Finally, the reported resin is found to be a very effective hazardous metal ion-exchanger than the earlier reported resins. [5,12,18,35] CONCLUSION A novel chelating resin was synthesized for the recovery of harmful metal ions. The synthesized resin was characterized by various spectral techniques, and its morphological features were analyzed.…”

Section: Freundlich Isotherm Modelmentioning

confidence: 76%

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Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

Azarudeen¹,

Ahamed²,

Thirumarimurugan³

et al. 2015

Polym. Adv. Technol.

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An effectual functionalized synthetic resin involving anthranilic acid/4-nitroaniline/formaldehyde was synthesized for the detoxification of hazardous metal ions. The resin was characterized by Fourier transform infrared, 1 H, and 13 C nuclear magnetic resonance spectroscopy, and its morphology was established through scanning electron microscope and X-ray diffraction. The resin was analyzed by thermogravimetric analysis to assess the thermal stability, in which the resin could be used in high temperature aqueous solutions for the elimination of harmful metal ions. The ion-exchange property of the resin was evaluated by batch technique for specific metal ions viz. Fe . The study was extended to three variations such as effect of metal ion uptake in the presence of various electrolytes in different concentrations, effect of pH, and effect of contact time. The outcome proved that the resin can be used as a strong cation-exchanger to remove various metal ions from the solutions. The resin could be regenerated and reused with quantitative recovery of metal ions for few cycles. On comparison with the earlier reported resins, the synthesized resin has found excellent capability of metal ion recovery. The resin possesses an utmost ion-exchange capacity, which is in good harmony with isotherm models and kinetics.

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Section: Freundlich Isotherm Modelmentioning

confidence: 76%

Section: Freundlich Isotherm Modelmentioning

confidence: 76%

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

Azarudeen¹,

Ahamed²,

Thirumarimurugan³

et al. 2015

Polym. Adv. Technol.

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“…1. From the spectrum, a characteristic strong band at 1273.1 cm −1 is assigned to C-N stretching of Ar-NH 2 [7]. The absorption peak appeared at 2853.97 cm −1 belongs to the aromatic ring stretching vibration modes.…”

Section: Ftir Analysismentioning

confidence: 96%

“…Based on the obtained results, multiple signals presented at 6.354-7.064 ppm indicate the aromatic protons. The aromatic methylene protons of Ar-CH 2 bridge are appeared at 1.9-2.2 ppm [7]. A singlet observed in the region 4.150 ppm is due to the 2H methylene proton of Ar-CH 2 -N moiety of the terpolymer.…”

Section: Nmr Analysismentioning

confidence: 97%

A novel comparative study: synthesis, characterization and thermal degradation kinetics of a terpolymer and its composite for the removal of heavy metals

Velmurugan¹,

Ahamed²,

Azarudeen³

2015

Iran Polym J

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“…The Langmuir isotherm model suggests monolayer coverage of adsorbate on the surface of sorbent, whereas Freundlich isotherm model assumes the heterogeneity of the sorbent surface and multilayer formation. 41 The Redlich-Peterson isotherm model incorporates the feature of both the Langmuir and Freundlich model, in which at low concentration it approaches the Langmuir isotherm and approximates to the Freundlich equation at higher concentration. 42 The Temkin isotherm model considers the binding energy of adsorbent-adsorbate, which is characterized by uniform distribution.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Preparation and Heavy Metal Ion Adsorption Behavior of Novel Supermagnetic Nanocomposite of Hydrophilic Thiacalix[4]arene Self-doped Polyaniline: Conductivity, Isotherm, and Kinetic Study

Norouzian

Lakouraj

2015

Adv. Polym. Technol.

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ABSTRACT:In the present paper, supermagnetic nanocomposite of self-doped polyaniline (PANI) was prepared by attaching hydrophilic thiacalix [4]arene tetrasulfonate protonic acid dopant as pendent groups to PANI backbone and was further magnetized with Fe 3 O 4 via the coprecipitation method. Thereafter, the structural, morphological, and magnetic properties of the nanocomposite were studied by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, vibrating sample magnetometer, and thermogravimetric analysis, and nanocomposites were further used for the removal of metal ions from aqueous solutions. The adsorption capacity of self-doped nanoadsorbent toward Cu(II), Cd(II), Co(II), and Cr(III) was investigated through batch adsorption techniques, and the extent of adsorption was measured as a function of pH, initial metal ion concentration, and contact time. It was found that the metal ion removal reached maximum at pH 8.0 and remained constant after 60 min. Experimental data were fitted to the Langmuir, Freundlich, Redlich-Peterson, and Temkin equation models with the maximum adsorption capacity calculated as 294, 285.71, 277.7, and 285.7 mgg −1 from the Langmuir isotherm for Cu(II), Cd(II), Co(II), and Cr(III), respectively. The kinetic study was carried out through pseudo-first-order, pseudo-second-order, Elovich kinetic, and intraparticle diffusion models in which the related correlation coefficient for each kinetic model showed that the pseudo-second-order rate equation was better described by the adsorption process. The four-probe conductivity measurement technique revealed that metal ion adsorption resulted in a rather significant enhancement of conductivity with a 100 order of magnitude increment for the supermagnetic nanoadsorbent due to charge delocalization of absorbed metal ions. C

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Batch separation studies for the removal of heavy metal ions using a chelating terpolymer: Synthesis, characterization and isotherm models

Cited by 70 publications

References 21 publications

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

A novel comparative study: synthesis, characterization and thermal degradation kinetics of a terpolymer and its composite for the removal of heavy metals

Preparation and Heavy Metal Ion Adsorption Behavior of Novel Supermagnetic Nanocomposite of Hydrophilic Thiacalix[4]arene Self-doped Polyaniline: Conductivity, Isotherm, and Kinetic Study

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