Removal of phenolic compounds using (2-hydroxyethyl methacrylate/acrylamidopyridine) hydrogel prepared by gamma radiation

El‐Hamshary, Hany; El-Sigeny, Samia; Taleb, Manal F. Abou; El-Kelesh, Nabil A.

doi:10.1016/j.seppur.2007.04.013

Cited by 31 publications

(17 citation statements)

References 27 publications

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“…The adsorption capability of the hydrogels for RhB dye at different pH values are showed in Figure , the adsorption capability is first increased and then decreased with the pH value increasing, which can be attributed to the state change of the ‐COOH group on the hydrogels molecular chains. The similar result has been reported . At pH < 4.56, as the pH values increasing, the dye adsorption is increased.…”

Section: Resultssupporting

confidence: 89%

The adsorption behaviors of the multiple stimulus‐responsive poly(ethylene glycol)‐based hydrogels for removal of RhB dye

Yuan

Wang

Han

et al. 2015

J of Applied Polymer Sci

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In this article, the multiple stimulus-responsive organic/inorganic hybrid hydrogels by combining poly(2-(2-methoxyethoxy) ethyl methacrylate-co-oligo (ethylene glycol) methacrylate-co-acrylic acid) (PMOA) hydrogel with magnetic attapulgite/Fe 3 O 4 (AT-Fe 3 O 4 ) nanoparticles were applied to the removal of Rhodamine B (RhB) dye from wastewater. The adsorption of RhB by the hydrogels was carried out under different external environmental, such as pH, temperature and magnetic-field. The results showed that the hydrogels still possessed temperature, pH and magnetic-field sensitivity during the adsorption process, which indicated that the adsorption could be controlled by the hydrogels responsive. The dye adsorption had a significant increment at 30 C and the removal of RhB could reach to over 95%. Besides, the low pH values were also favorable for the RhB adsorption, the removal was over 90% at pH 5 4.56. Kinetic studies showed that the pseudo-second order kinetic model well fitted the experimental data. The rate constant of adsorption was 0.0379 g/mg min. Langmuir and Freundlich isotherm models were applied to the equilibrium adsorption for describing the interaction between sorbent and adsorbate. The maximum K L and K F were 2.23 (L/g) and 0.87 (mg/g) at 30 C, respectively. Under the external magnetic-field, the adsorption rate significantly increased within 250 min and the hydrogels could be separated easily from wastewater.

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Section: Resultssupporting

confidence: 89%

The adsorption behaviors of the multiple stimulus‐responsive poly(ethylene glycol)‐based hydrogels for removal of RhB dye

Yuan

Wang

Han

et al. 2015

J of Applied Polymer Sci

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“…Various methods are available to remove nitrophenols from water, including adsorption [2–6], microbial degradation [7], chemical oxidation [8], membrane separation [9], catalytic oxidation [10], and electrochemical treatment [11,12]. Some of these methods, such as adsorption on activated carbon, have high costs, as well as the potential to cause secondary pollution, and low-cost, highly selective removal methods continue to be sought [1].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Molecularly Imprinted Polymer Membrane for the Removal of 2,4-Dinitrophenol

Yusof

Zakaria

Maamor

et al. 2013

IJMS

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Molecularly imprinted polymers (MIPs) were prepared by bulk polymerization in acetonitrile using 2,4-dinitrophenol, acrylamide, ethylene glycol dimethacrylate, and benzoyl peroxide, as the template, functional monomer, cross-linker, and initiator, respectively. The MIP membrane was prepared by hybridization of MIP particles with cellulose acetate (CA) and polystyrene (PS) after being ground and sieved. The prepared MIP membrane was characterized using Fourier transform infrared spectroscopy and scanning electron microscopy. The parameters studied for the removal of 2,4-dinitrophenol included the effect of pH, sorption kinetics, and the selectivity of the MIP membrane. Maximum sorption of 2,4-nitrophenol by the fabricated CA membrane with MIP (CA-MIP) and the PS membrane with MIP (PS-MIP) was observed at pH 7.0 and pH 5.0, respectively. The sorption of 2,4-dinitrophenol by CA-MIP and PS-MIP followed a pseudo–second-order kinetic model. For a selectivity study, 2,4-dichlorophenol, 3-chlorophenol, and phenol were selected as potential interferences. The sorption capability of CA-MIP and PS-MIP towards 2,4-dinitrophenol was observed to be higher than that of 2,4-dichlorophenol, 3-chlorophenol, or phenol.

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“…Their high toxicity, even at low concentrations, has motivated the search and improvement of many treatment techniques. Among various physicochemical processes including adsorption [1][2][3][4], oxidative coupling polymerization [5], enzyme-catalyzed polymerization [6], photocatalytic degradation [7] and electrochemical treatment [8] adsorption is widely used for the removal of phenolic compounds from wastewater [9,10]. Adsorption onto activated carbons in the form of grains or powder is a well-known process for organic contaminant removal [11].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium, kinetic and thermodynamic studies on the sorption of 4-hydroxyphenol on Cr-bentonite

Zheng

Wang

Zheng

et al. 2008

Chemical Engineering Journal

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Removal of phenolic compounds using (2-hydroxyethyl methacrylate/acrylamidopyridine) hydrogel prepared by gamma radiation

Cited by 31 publications

References 27 publications

The adsorption behaviors of the multiple stimulus‐responsive poly(ethylene glycol)‐based hydrogels for removal of RhB dye

The adsorption behaviors of the multiple stimulus‐responsive poly(ethylene glycol)‐based hydrogels for removal of RhB dye

Synthesis and Characterization of Molecularly Imprinted Polymer Membrane for the Removal of 2,4-Dinitrophenol

Equilibrium, kinetic and thermodynamic studies on the sorption of 4-hydroxyphenol on Cr-bentonite

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