A new functionalized magnetic nanocomposite of poly(methylacrylate) for the efficient removal of anionic dyes from aqueous media

RSC Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 7982-7989 ◽  
Author(s):  
Ali Pourjavadi ◽  
Azardokht Abedin-Moghanaki ◽  
Seyed Amirhossein Nasseri
Keyword(s):  
Methyl Ester ◽  
Radical Polymerization ◽  
Methyl Acrylate ◽  
Active Sites ◽  
Aqueous Media ◽  
Magnetic Nanocomposite ◽  
Efficient Removal ◽  
Anionic Dyes ◽  
Nano Adsorbent

A magnetic nano-adsorbent was synthesized via the radical polymerization of methyl acrylate on modified Fe3O4 MNPs, followed by amidation of the methyl ester groups using pentaethylenehexamine, to create active sites for adsorption of anionic dyes.

scholarly journals Animal Biopolymer-Plant Biomass Composites: Synergism and Improved Sorption Efficiency

2020 ◽  
Vol 4 (1) ◽  
pp. 15 ◽  
Author(s):  
Mohamed H. Mohamed ◽  
Inimfon A. Udoetok ◽  
Lee D. Wilson
Keyword(s):  
Wheat Straw ◽  
Active Sites ◽  
Plant Biomass ◽  
Low Cost ◽  
Aqueous Media ◽  
Dye Adsorption ◽  
Anionic Dyes ◽  
Adsorption Affinity ◽  
Variable Weight ◽  
Composite Pellets

Pelletized biomaterial composites that contain chitosan (C) and torrefied wheat straw (S) at variable weight composition (C:S) were prepared using a facile blending process. The fractional content of the wheat straw was studied to elucidate the role of biomass on the pelletized product and effects of S-content on the physicochemical properties relevant to adsorption phenomena. Chitosan pellets (with and without S) were characterized by spectroscopic (FT-IR and 13C NMR) and thermal (TGA and DSC) techniques to provide support for their respective C:S composition. Confocal microscopy using fluorescein (FL) as a dye probe revealed the presence and an increase in the accessibility of the active sites for the composite pellets according to the S-content (wt %). Equilibrium and kinetic sorption studies using FL and reactive black (RB) dyes revealed an incremental adsorption affinity of the pellets with anionic dyes in variable charge states (FL and RB). The trend for dye adsorption parallels the incremental S-content (wt %) in the composite pellets. This study reports a first-example of a low-cost, facile, and sustainable approach for the valorization of straw and chitosan suitable for sorption-based applications in aqueous media.

Efficient removal of cationic dyes using a new magnetic nanocomposite based on starch-g-poly(vinylalcohol) and functionalized with sulfate groups

RSC Advances ◽  
2016 ◽  
Vol 6 (44) ◽  
pp. 38042-38051 ◽  
Author(s):  
Ali Pourjavadi ◽  
Azardokht Abedin-Moghanaki ◽  
Amir Tavakoli
Keyword(s):  
Magnetic Nanoparticles ◽  
Vinyl Acetate ◽  
Graft Copolymerization ◽  
Chlorosulfonic Acid ◽  
Magnetic Nanocomposite ◽  
Cationic Dyes ◽  
Hydroxyl Groups ◽  
Efficient Removal ◽  
Nano Adsorbent

A new magnetic nano-adsorbent has been prepared based on graft copolymerization of vinyl acetate onto starch in the presence of magnetic nanoparticles followed by the sulfation of the hydroxyl groups using chlorosulfonic acid.

scholarly journals Modified-Nano-Adsorbents for Nitrate Efficient Removal: A Review

2019 ◽  
Vol 23 (2) ◽  
Author(s):  
N. D. Suzaimi ◽  
P. S. Goh ◽  
N. A. N. N. Malek
Keyword(s):  
Surface Water ◽  
Water Contamination ◽  
High Efficiency ◽  
State Of The Art ◽  
Aqueous Media ◽  
Efficient Removal ◽  
Aquatic Life ◽  
Adsorption Performance ◽  
Nitrate Adsorption ◽  
Nano Adsorbent

Excessive nitrate discharge into the aquatic environment from human activities is the main contributor to groundwater and surface water contamination. Its toxicity in water is a serious concern as it gives huge impacts on aquatic life since it damages the ecosystem and water sources around the globe. Recently, the development of nanomaterials as nano-adsorbent makes adsorption the most attractive solution among them. Nano-adsorbents pose high efficiency to remove pollutants from aqueous media. The exclusive chemical and structural properties of the developed nano-adsorbents are the determinative effects of nitrate adsorption performance. In this mini review, the state-of-the-art development of nano-adsorbents and nano-adsorbents-modified membranes for nitrate from water is discussed, and some challenges faced in this field are also highlighted.

scholarly journals Efficient removal of some anionic dyes from aqueous solution using a polymer-coated magnetic nano-adsorbent

2017 ◽  
Vol 66 (4) ◽  
pp. 239-248 ◽  
Author(s):  
Armin Kiani ◽  
Pouya Haratipour ◽  
Mazaher Ahmadi ◽  
Rouholah Zare-Dorabei ◽  
Ali Mahmoodi
Keyword(s):  
Aqueous Solution ◽  
Efficient Removal ◽  
Anionic Dyes ◽  
Nano Adsorbent

scholarly journals One-pot synthesis for gradient copolymers via concurrent tandem living radical polymerization: mild and selective transesterification of methyl acrylate through Al(acac)3 with common alcohols

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26049-26055
Author(s):  
Tam Thi-Thanh Huynh ◽  
Si Eun Kim ◽  
Soon Cheon Kim ◽  
Jin Chul Kim ◽  
Young Il Park ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Methyl Acrylate ◽  
Living Radical Polymerization ◽  
One Pot ◽  
Gradient Copolymers ◽  
One Pot Synthesis

The acrylate based gradient copolymers were successfully synthesized by concurrent tandem living radical polymerization using Al(acac)3 as cocatalyst with common alcohols.

Adsorption of copper ions from aqueous media using montmorillonite-Al2O3 nano-adsorbent incorporated with Fe3O4 for facile separation

2020 ◽  
Vol 37 (12) ◽  
pp. 2273-2286
Author(s):  
Fatemeh Saadat ◽  
Mohammad Mahdi Zerafat ◽  
Sahar Foorginezhad
Keyword(s):  
Copper Ions ◽  
Aqueous Media ◽  
Nano Adsorbent
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