Removal of metal complexed azo dyes from aqueous solution using tris(2-aminoethyl)amine ligand modified magnetic p(GMA-EGDMA) cationic resin: Adsorption, isotherm and kinetic studies

Bayramoğlu, Gülay; Akbulut, Aydın; Liman, Gorkem; Arıca, M. Yakup

doi:10.1016/j.cherd.2017.06.005

Cited by 55 publications

(28 citation statements)

References 38 publications

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“…The value of 1/n is a measure of the surface heterogeneity, which ranges between 0 and 1, and becomes more heterogeneous when approached to zero. 7 It also represents the distribution of site energies: the value of n À 1 ranging between 0.1 and 0.5 indicated that the adsorption should be favorable; the value of n À 1 ranging between 0.5 and 1.0 represented that the ions are easy to adsorb; otherwise (if n À 1 > 1), it is difficult to adsorb. 2.4.3 Temkin isotherm.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…The timelapse capsules were surrounded by a cylindrical polyethylene mesh to increase the mechanical durability. It is noted that the adsorption by ion-exchange resins has been used for various applications, such as removal of heavy metals, 4,5 removal of peruoroalkyl substances, 6 removal of metal complexed azo dyes, 7 nutrient recovery from urine, 8 and precious metal recovery from electrical and electronic wastes. 9,10 The developed time-lapse capsules could be readily deployed in monitoring works and could serve as concentrators of heavy metals from a water body.…”

Section: Introductionmentioning

confidence: 99%

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A multiple model approach for evaluating the performance of time-lapse capsules in trapping heavy metals from water bodies

et al. 2020

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Section: Adsorption Isothermsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A multiple model approach for evaluating the performance of time-lapse capsules in trapping heavy metals from water bodies

et al. 2020

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“…This dye effluent contains enormous salt and organic content and they are less biodegradable. Discharge of these dyes into natural water system without the treatment results in ecological imbalance [1][2][3][4]. Synthetic dyes are resistance to the physicochemical reaction and have thermal and optical stability due to the complex aromatic structure [5,6].…”

Section: Introductionmentioning

confidence: 99%

Chrysanthemum indicum microparticles on removal of hazardous Congo red dye using response surface methodology

Chukki

Abinandan²,

Shanthakumar

2018

Int J Ind Chem

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Biomass-derived adsorbents have been intensively studied due to their competence in reducing pollutants with conventional methods. Flowers are used as source in medicine, cosmetics and even as adsorbents for pollutant abatement. In this study, the microparticles from Chrysanthemum indicum were used as adsorbent for reducing the Congo red dye concentration from synthetic solution. Batch trials were evaluated to understand the influence of factors and optimization was carried out using central composite design. Maximum reduction (84.1%) achieved under the optimized settings of pH (1.0), adsorbent dose (300 ppm), stirring speed (150 rpm), and contact time (75 min) at initial dye concentration (150 ppm at 30 °C). Microparticle size ensured with surface morphology of the adsorbent using electron microscopy and functional groups was studied using infrared spectroscopy techniques, respectively. Regression coefficient (R 2) value was obtained as 0.956 which indicates that the predicted values were in good agreement with their corresponding experimental values for the Congo red dye adsorption. Based on the investigation, it is inferred that the Chrysanthemum indicum flower has the potential for Congo red dye reduction from aqueous solution.

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“…e negative values of ΔH 0 (−17.06 kJ/mol) affirms quantitatively that the process is exothermic and MG adsorption process was not favoured at higher temperatures [52,71]. erefore, the sorption of MG by TU-poly(AN-co-AA) is feasible, and there is no need for external energy [72]. e spontaneous character of the adsorption process was con rmed by negative values of ΔG 0 , while its positive change suggests that desorption took place at an elevated temperature.…”

Section: Adsorption Isothermsmentioning

confidence: 80%

Adsorption of Malachite Green Dye from Liquid Phase Using Hydrophilic Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Kinetic and Isotherm Studies

Adeyi

Jamil

Abdullah

et al. 2019

Journal of Chemistry

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Thiourea-modified poly(acrylonitrile-co-acrylic acid) (TU-poly(AN-co-AA)) adsorbent was a surface modification of poly(acrylonitrile-co-acrylic acid) synthesized by facile redox polymerization. Surface functionalization with thiourea was carried out to provide hydrophilicity on the surface of a polymeric adsorbent. Fourier transform infrared (FTIR) spectrometer, scanning electron microscope (SEM), and Zetasizer characterized the morphology and structures of TU-poly(AN-co-AA). Copolymerization of poly(acrylonitrile-co-acrylic acid) and its successful incorporation of the thioamide group was confirmed by the FTIR spectra. The SEM micrographs depicted uniform and porous surface morphologies of polymeric particles. The average diameter of modified and unmodified poly(acrylonitrile-co-acrylic acid) was 289 nm and 279 nm, respectively. Zeta potentials of TU-poly(AN-co-AA) revealed the negatively charged surface of the prepared polymer. Adsorption capacities of hydrophilic TU-poly(AN-co-AA) were investigated using malachite green (MG) as an adsorbate by varying experimental conditions (pH, initial concentration, and temperature). Results showed that the pseudo-second-order reaction model best described the adsorption process with chemisorption being the rate-limiting step. Furthermore, Elovich and intraparticle diffusions play a significant role in adsorption kinetics. The equilibrium isotherm has its fitness in the following order: Freundlich model > Temkin model > Langmuir model. Thermodynamic analysis indicates that the sorption process is spontaneous and exothermic in nature. The reusability results suggested potential applications of the TU-poly(AN-co-AA) polymer in adsorption and separation of cationic malachite green dye from wastewater.

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Removal of metal complexed azo dyes from aqueous solution using tris(2-aminoethyl)amine ligand modified magnetic p(GMA-EGDMA) cationic resin: Adsorption, isotherm and kinetic studies

Cited by 55 publications

References 38 publications

A multiple model approach for evaluating the performance of time-lapse capsules in trapping heavy metals from water bodies

A multiple model approach for evaluating the performance of time-lapse capsules in trapping heavy metals from water bodies

Chrysanthemum indicum microparticles on removal of hazardous Congo red dye using response surface methodology

Adsorption of Malachite Green Dye from Liquid Phase Using Hydrophilic Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Kinetic and Isotherm Studies

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