Sorption characteristics of Cu(II) ions onto silica gel-immobilized calix[4]arene polymer in aqueous solutions: Batch and column studies

Tabakcı, Mustafa; Yılmaz, Mustafa

doi:10.1016/j.jhazmat.2007.05.077

Cited by 79 publications

(46 citation statements)

References 29 publications

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“…On the other hand, for adsorbent 2b and 2c, the adsorption kinetics of Cd(II) and Cr(III) followed kinetics model of Ho while for the Cu(II) followed Lagergren kinetic models. These results are similar by previous researchers [22] showed that adsorption of Cr(III) onto polypropylcalix [4]arenes followed the kinetics model of Ho. By using the three adsorbents, shows that the adsorption rate constant for Cr(III) is greatest when compared to the adsorption of Cd(II) and Cu(II).…”

Section: Adsorption Kinetic Modelssupporting

confidence: 92%

“…At pH value higher than 7, the sorption competed with the precipitation. A similar adsorption mechanism was presented by previous researchers on Cr(III) sorption onto poly-diallylcalix [6]arene [16] and on Cu(II) sorption onto calix [4]arene polymer [4]. …”

Section: Effect Of Phsupporting

confidence: 80%

“…It is great a concern because of the toxic effect of heavy metal ions to plants, animals and human beings [1][2][3][4][5]. Inorganic contaminants such as Cd(II), Cu(II) and Cr(III) are heavy metals which are difficult to be degraded into harmless species [6].…”

Section: Introductionmentioning

confidence: 99%

“…Calix [6]arene with six phenol ring arrange the molecules are relatively more easily made than calix [4]arene. It has provided important avenue to be used for various utilization.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Adsorption Properties of Novel Calix[6]arene Polymers for Heavy Metal Cations

Prabawati¹,

Jumina²,

Santosa³

et al. 2012

Indones. J. Chem.

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A research has been conducted to investigate the capability of a series of novel calix [6]arenes-based polymers: poly-monoallyloxycalix [6]arene (2a), poly-monoallyloxypenta-estercalix[6]arene (2b) and poly-monoallyloxypentaacidcalix [6] ABSTRAK Telah dilakukan penelitian untuk mengkaji kemampuan adsorpsi senyawa turunan polikaliks[6]arena yaitu polimonoalilkaliks[6]arena (2a), poli-monoalilesterkaliks[6]arena (2b) dan poli-monoalilasamkaliks[6]arena (2c) terhadap kation logam berat seperti Cd(II), Cu(II) dan Cr(III). Adanya gugus aktif hidroksi (-OH) dan struktur senyawa yang menyerupai terowongan sangat memungkinkan pemanfaatan senyawa-senyawa tersebut sebagai adsorben logam berat. Proses adsorpsi dilakukan dengan metode batch pada variasi keasaman (pH), waktu kontak dan konsentrasi awal ion logam. Hasil penelitian menunjukkan bahwa jumlah ion logam teradsorpsi semakin bertambah dengan bertambahnya pH larutan logam. Untuk ketiga polimer, jumlah ion logam Cd(II), Cu(II) dan

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Section: Adsorption Kinetic Modelssupporting

confidence: 92%

Section: Effect Of Phsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

“…Calix [6]arene with six phenol ring arrange the molecules are relatively more easily made than calix [4]arene. It has provided important avenue to be used for various utilization.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study on the Adsorption Properties of Novel Calix[6]arene Polymers for Heavy Metal Cations

Prabawati¹,

Jumina²,

Santosa³

et al. 2012

Indones. J. Chem.

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“…Calixarene is a unique macromolecular compound with a cavity structure [2], and many studies have investigated the modification of its upper and lower edge with functional groups [3]. The calixarene derivatives have been applied in many areas, including molecular recognition, enzyme mimics, chemical sensors, and molecular assembly as well as optoelectronic and nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Application of Hydroxamic Modified Calix[6]arene for Selective Extraction of Uranium (VI)

Lin¹,

Wang²,

Zhou³

et al. 2014

Proceedings of the 2015 International Conference on Material Science and Applications

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Abstract. Calix[6]arene hydroxamic derivatives were synthesized by two steps using calix [6]arene, ethyl bromoacetate and hydroxylamine hydrochloride as the main raw materials, and were characterized by infrared spectroscopy. The extraction of U(VI) by calix[6]arene and its hydroxamic derivatives on various experimental conditions were studied. The extraction results showed that pH played an important role in the extraction system. Maximum extraction was observed at a pH of 5.0 within 20 min, and the dynamic extraction model corresponded to a pseudo-second order model.

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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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Sorption characteristics of Cu(II) ions onto silica gel-immobilized calix[4]arene polymer in aqueous solutions: Batch and column studies

Cited by 79 publications

References 29 publications

Study on the Adsorption Properties of Novel Calix[6]arene Polymers for Heavy Metal Cations

Study on the Adsorption Properties of Novel Calix[6]arene Polymers for Heavy Metal Cations

Application of Hydroxamic Modified Calix[6]arene for Selective Extraction of Uranium (VI)

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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