Removal of methylene blue dye from aqueous medium by nano poly acrylonitrile particles

Eldin, M.S. Mohy; El-Sakka, S.A.; El-Masry, M.M.; Abdel-Gawad, I. I.; Garybe, S.S.

doi:10.1080/19443994.2012.691688

Cited by 22 publications

(6 citation statements)

References 15 publications

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“…Higher concentration of comonomers increases the probability of the molecular collision of reactants leading to increase the conversion yield. [21] The conversion yield for polyacrylonitrile at 10% concentration was 48%, [22] whereas this study using poly (St-co-AN), gave conversion yield 42.5%. [18] The coloration should definitely be caused by PAN cyclization which might be assumed as one of some possible intermediate stages of hydrolysis.…”

Section: Effect Of Comonomer Concentrationmentioning

confidence: 77%

“…while poly (AN‐co‐DVB) yielded 22.5%, at the same concentration . The conversion yield for polyacrylonitrile at 10% concentration was 48%, whereas this study using poly (St‐co‐AN), gave conversion yield 42.5%. This sequence do not match what was reported from Lewis, Mayo, and Hulse who investigated the copolymerization of ST, MMA, and AN.…”

Section: Resultsmentioning

confidence: 99%

“…Temperature decrease generates a small number of free radicals due to the slow rate of the initiator redox reaction . In similar studies, the conversion yield for PAN was about 55% at 70°C . While copolymerization between AN with DVB yielded about 80% .…”

Section: Resultsmentioning

confidence: 99%

“…The polymerization rate increased due to the higher rate of initiator decomposition or propagation at a higher temperature. [22] While copolymerization between AN with DVB yielded about 80%. Temperature decrease generates a small number of free radicals due to the slow rate of the initiator redox reaction.…”

Section: Effect Of Polymerization Temperaturementioning

confidence: 99%

“…[21] and about 65% for the copolymerization with MMA. [21] It was 44% for poly (AN-co-MMA), [20] and 33% for PAN [22] over the same polymerization time. Figure 8 shows that the conversion yield reached 53.6% by increasing polymerization time up to 5 hr.…”

Section: Effect Of Polymerization Temperaturementioning

confidence: 99%

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Synthesis, optimization, and characterization of poly (Styrene‐co‐Acrylonitrile) copolymer prepared via precipitation polymerization

et al. 2017

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Poly (Styrene-co-Acrylonitrile) (poly (St-co-AN) copolymer nanoparticles with controllable size are synthesized by a simple and cheap precipitation polymerization technique of styrene (St) and acrylonitrile (AN) monomers in aqueous medium using potassium persulfate (KPS) redox initiation system. Preparation of poly (St-co-AN) and studying all the parameters affecting the polymerization process such as time, temperature, monomer ratio, initiator molarity, cosolvent ratio, and solvent were considered. The resultant poly (St-co-AN) was compared with other studies which used different comonomers with AN, the comparison was assessed by evaluating the polymer conversion yield side. Maximum polymerization conversion yield, 66.5%, was obtained with St:AN (30%:70%) comonomer ratio. The smallest particle size obtained with this method was close to 16.17 nm and controlled by variation in polymerization conditions. The structure of poly (St-co-AN) copolymers were confirmed by Fourier transform infrared (FTIR), thermo gravimetric analysis (TGA), and differential thermal analyzer (DTA). The morphological structure of the copolymer particles was indicated by scanning electron microscope (SEM) photographs.The polymeric particle size was studied using particle size analyzer. K E Y W O R D Snanoparticles, nanostructure, poly (Styrene-co-Acrylonitrile), precipitation polymerization F I G U R E 1 Schematic illustration of the preparation process of poly (St-co-AN) by precipitation polymerization

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Section: Effect Of Comonomer Concentrationmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Effect Of Polymerization Temperaturementioning

confidence: 99%

Section: Effect Of Polymerization Temperaturementioning

confidence: 99%

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Synthesis, optimization, and characterization of poly (Styrene‐co‐Acrylonitrile) copolymer prepared via precipitation polymerization

et al. 2017

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Ultrasonic Synthesis of Zero Valent Iron Nanoparticles for the Efficient Discoloration of Aqueous Solutions Containing Methylene Blue Dye

Kamali

Costa

2018

Nanomaterials in the Wet Processing of Textiles

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Amidoximated poly(acrylonitrile) particles for environmental applications: Removal of heavy metal ions, dyes, and herbicides from water with different sources

Ajmal

Demirci

Siddiq

et al. 2015

J of Applied Polymer Sci

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Monodispersed poly(acrylonitrile) [p(AN)] particles were prepared by surfactant free emulsion polymerization and the hydrophobic nitrile groups were converted to hydrophilic amidoxime groups by treatment with hydroxylamine hydrochloride (NH 2 OH.HCl) in water. The p(AN) and amidoximated p(AN) [amid-p(AN)] particles were characterized by Fourier transformation infrared (FT-IR) spectroscopy, thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM). The prepared particles were used as adsorbents in the removal from aqueous media of three different types of pollutants; organic dyes methylene blue (MB), and rhodamine 6 G (R6G), a heavy metal ion Cd (II), and a herbicide paraquat (PQ). The effects of various parameters such as amidoximation, pH of solution, amount of particles, and the initial concentration of solution were investigated. Upon amidoximation, a great increase in the adsorption capacity of the prepared particles was observed as the adsorbed amounts were increased to 87, 91, 74, and 91 mg/g from 5, 1.54, 1.06, and 1.22 mg/g for Cd (II), MB, R6G, and PQ, respectively. The amid-p(AN) particles were also able to remove considerable amounts of these pollutants from tap, river, and sea water. Langmuir, Freundlich, and Temkin adsorption isotherms were applied and it was found that the adsorption of Cd (II) and PQ followed the Langmuir adsorption model, whereas the adsorption of MB was found to obey the Freundlich adsorption isotherm. Pseudo first-order and pseudo second-order kinetics were also applied and the results showed that the adsorption processes of Cd (II), PQ, MB, and R6G follow pseudo second-order kinetics.

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Removal of methylene blue dye from aqueous medium by nano poly acrylonitrile particles

Cited by 22 publications

References 15 publications

Synthesis, optimization, and characterization of poly (Styrene‐co‐Acrylonitrile) copolymer prepared via precipitation polymerization

Synthesis, optimization, and characterization of poly (Styrene‐co‐Acrylonitrile) copolymer prepared via precipitation polymerization

Ultrasonic Synthesis of Zero Valent Iron Nanoparticles for the Efficient Discoloration of Aqueous Solutions Containing Methylene Blue Dye

Amidoximated poly(acrylonitrile) particles for environmental applications: Removal of heavy metal ions, dyes, and herbicides from water with different sources

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