Adsorption Characteristics and Mechanistic Study of Immobilized Chitosan-Montmorillonite Composite for Methyl Orange removal

Bahrudin, Noor Nazihah; Nawi, Mohd Nasrun Mohd; Jawad, Ali H.; Sabar, S.

doi:10.1007/s10924-020-01734-7

Cited by 98 publications

(24 citation statements)

References 58 publications

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“…The FTIR spectrum of the EB reference solution presented in Fig. 17 shows a broad peak of the NH bond of the phenyldiazonium ring at 3375.89 cm −1 , 60 aromatic CH ring stretching at 2920.97 cm −1 , 60 CC at 2300–2100 cm −1 , 61 aromatic CC ring stretching at 1943.10 cm −1 , 1658.11 cm −1 , 62 and 1519.25 cm −1 , 63 NN bond at 1569.75 cm −1 and 1418.76 cm −1 , 62,64 C–N at 1351.98 cm −1 and 1164.01 cm −1 , 62,64 CN at 1306.03 cm −1 , 64 SO at 1114.67 cm −1 , 63,64 and C–H bending vibration of the aromatic ring at 1042.40 cm −1 64 and 1000–550 cm −1 . 65…”

Section: Resultsmentioning

confidence: 99%

A novel study on the preferential attachment of chromophore and auxochrome groups in azo dye adsorption on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity

Ahmouda

Boudiaf

Benhaoua³

2022

Nanoscale Adv.

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Section: Resultsmentioning

confidence: 99%

A novel study on the preferential attachment of chromophore and auxochrome groups in azo dye adsorption on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity

Ahmouda

Boudiaf

Benhaoua³

2022

Nanoscale Adv.

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“…Due to the dangers of heavy metals to the ecosystem, many scientists and researchers have worked hard to find effective and quick solutions to confront these pollutants; [34] examined the use of multiwalled carbon nanotubes (MCNTs) to remove fenuron pesticide from wastewater, [35] used a new method and technique in treating sludge by removing water from sludge using Extracellular polymeric substances (EPS) [36][37][38][39][40][41].…”

Section: Resultsmentioning

confidence: 99%

Synthetization and characterization of SnCaAl2O3 nanocomposite and using as a superior adsorbent for Pb, Zn, and Cd ions in polluted water

et al. 2022

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The presence of heavy metals in drinking water or wastewater poses a serious threat to the ecosystem. Hence, the present study focused on synthesizing SnCaAl2O3 core-shell nanoparticles (C.N.P.s) in the α-Alumina phase by thermal annealing a stacked structure sandwiched between two Al2O3 layers at low temperatures. The obtained structure showed Sn N.P. floating gate with an Al2O3 dielectric stacked tunneling barrier to remove the excess of these heavy metals from polluted water. To characterize the prepared composites, X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), and high-resolution transmission electron microscopy (HR-TEM) were used. The synthesized SnCaAl2O3 C.N.P.s composite was examined to utilize it as an adsorbent for removing Zn, Cd, and Pb divalent cations. The removal efficiency was studied by various parameters such as adsorbent dose, pH, contact time, metal concentrations, temperature, and coexisting ions. The experimental results were tested via Langmuir and Freundlich isotherm models. The obtained results were convenient to the Freundlich isotherm model. Moreover, the adsorption thermodynamic behavior of Zn+2, Cd+2, and Pb+2 on the synthesized composite was examined, and the process is endothermic and spontaneous under experimental conditions. The results illustrated that the adsorption efficiency of the SnCaAl2O3 core-shell nanoparticles (C.N.P.s) ranged from 88% to about 100% for all cations.

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“…Subsequently, this kind of synergistic adsorption increased the adsorption efficiency of methyl orange. It has been reported that the electrostatic attraction interaction was the most responsible interaction force for methyl orange adsorption . Besides, the surface of CTA-CSM contains a large number of hydroxyl and amine groups, and these functional groups may be combined with the N atom on methyl orange, causing dipole–dipole H-bonding interactions; it may also overlap with methyl orange and form Yoshida H-bonding, which facilitates the adsorption process.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Quaternary Ammonium Salt-Modified Chitosan Microspheres and Their Application in Dyeing Wastewater Treatment

Zeng

et al. 2020

ACS Omega

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An efficient adsorbent (a quaternary ammonium salt-modified chitosan microsphere, CTA-CSM) was synthesized via an emulsion cross-linking reaction between 3-chloro-2-hydroxypropyl trimethyl ammonium chloride (CTA) and chitosan (CS). The adsorption efficiency of the CTA-CSM as an adsorbent was studied using methyl orange dye to evaluate its suitability for wastewater purification. The characterization results showed that the CTA groups were successfully grafted onto the CS microspheres, and the as-prepared CTA-CSM samples exhibited a smooth surface and good dispersibility. The modification of CTA on CTA-CSM significantly improved its ability to remove methyl orange dye. The adsorption process of methyl orange by CTA-CSM was well described by the Langmuir isotherm model and followed the pseudo-second-order kinetic model. Under the optimal conditions, the maximum removal rate (98.9%) and adsorption capacity (131.9 mg/g) of CTA-CSM was higher than those of other previous reports; its removal rate for methyl orange was still up to 87.4% after five recycles. Hence, CTA-CSM is a very promising material for practical dyeing wastewater purification.

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Adsorption Characteristics and Mechanistic Study of Immobilized Chitosan-Montmorillonite Composite for Methyl Orange removal

Cited by 98 publications

References 58 publications

A novel study on the preferential attachment of chromophore and auxochrome groups in azo dye adsorption on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity

A novel study on the preferential attachment of chromophore and auxochrome groups in azo dye adsorption on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity

Synthetization and characterization of SnCaAl2O3 nanocomposite and using as a superior adsorbent for Pb, Zn, and Cd ions in polluted water

Preparation of Quaternary Ammonium Salt-Modified Chitosan Microspheres and Their Application in Dyeing Wastewater Treatment

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