scholarly journals Facile fabrication of bimetallic Fe–Mg MOF for the synthesis of xanthenes and removal of heavy metal ions

RSC Advances ◽  
2020 ◽  
Vol 10 (16) ◽  
pp. 9693-9703 ◽  
Author(s):  
W. S. Abo El-Yazeed ◽  
Y. G. Abou El-Reash ◽  
L. A. Elatwy ◽  
Awad I. Ahmed
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Solvothermal Technique ◽  
Facile Fabrication ◽  
Ft Ir

This work reported the preparation of Mg-MOF, Fe-MOF and Fe–Mg MOF by a solvothermal technique and their characterization with FT-IR, XRD, SEM, EDS, TEM and SBET analyses.

Separation of Heavy Metal Ions from Petroleum Ash Liquor Using Organic Resins and FT-IR Study of the Process

2020 ◽  
Vol 62 (2) ◽  
pp. 243-250
Author(s):  
A. M. Abd El-Hamid ◽  
M. A. Zahran ◽  
Y. M. Z. Ahmed ◽  
S. M. El-Sheikh
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Ft Ir ◽  
Ir Study

Synthesis of graphene oxide/ polyvinyl alcohol (GO/PVA) composite film as an adsorbent

2021 ◽  
Vol 10 (3) ◽  
pp. xx-xx
Author(s):  
Thu Le Dieu ◽  
Hoang Tran Vinh
Keyword(s):  
Waste Water ◽  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Composite Film ◽  
Heavy Metal Ions ◽  
Precipitation Method ◽  
Initial Concentration ◽  
Ft Ir ◽  
Co Precipitation

In this study, heavy metal ions or organic in the aqueous solution are removed by adsorbent without filtration or centrifugation as well as incorporate magnetic materials into the adsorbent. A composite film GO/PVA from PVA and self – synthesized GO by co - precipitation method has synthesized successfully. This composite was characterized by XRD, SEM, FT-IR to evaluate the properties of this material. The results showed that there was an interaction between GO and PVA so we have tested the adsorption capacity of this composite with Co(II) ions and the obtained efficiency of this process was 99.5% with the initial concentration of solution is 20 mg.L-1. This film is completely capable of removing heavy metal ions from waste water.

Facile Fabrication of Poly(Acrylic Acid-Co-Acrylamide) Hydrogel with 4A Molecular Sieve for Removal of Heavy Metal Ions

2015 ◽  
Vol 1092-1093 ◽  
pp. 852-855
Author(s):  
Xiao Dan Lv ◽  
Zheng Yang Wang ◽  
Jian Hui Zhang ◽  
Zi Shu Chen ◽  
Wei Feng Cao ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Acrylic Acid ◽  
Mechanical Strength ◽  
Metal Ions ◽  
Molecular Sieve ◽  
Heavy Metal Ions ◽  
High Sorption Capacity ◽  
High Sorption ◽  
Facile Fabrication ◽  
Poly Acrylic Acid

A novel hydrogel was successfully synthesized through doping 4A molecular sieve (4A-MS) into poly (acrylic acid-co-acrylamide) and used for the removal of Cu2+, Ni2+, Cd2+and Pb2+in the solution. The composite hydrogel all exhibited high sorption capacity (SC) and high elution percentage (EP) for the four above heavy metal ions. Simultaneously, the water uptake (WU) of the hydrogel was dramatically decreased and the mechanical strength of the absorbent hydrogel was improved with increasing 4A-MS content.

Functionalized magnetic Fe3O4 nanoparticles for removal of heavy metal ions from aqueous solutions

e-Polymers ◽  
2016 ◽  
Vol 16 (4) ◽  
pp. 313-322 ◽  
Author(s):  
Dun Chen ◽  
Tunsagnl Awut ◽  
Bin Liu ◽  
Yali Ma ◽  
Tao Wang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Heavy Metal ◽  
Metal Ions ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Magnetic Adsorbents ◽  
Ft Ir ◽  
Magnetic Fe3o4 Nanoparticles

AbstractFe3O4 nanoparticles (MNP) were coated with 3-aminopropyltriethoxy-silane (APTES), resulting in anchoring of primary amine groups on the surface of the particles, then four kinds of novel magnetic adsorbents (Fe3O4@SiO2-NH-HCGs) were formed by grafting of different heterocyclic groups (HCG) on amino groups via substitution reaction. These Fe3O4@SiO2-NH-HCGs were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and energy disperse spectroscopy (EDS). The results confirmed the formation of Fe3O4@SiO2-NH-HCGs nanoparticles and the Fe3O4 core possessed superparamagnetism. Batch experiments were performed to evaluate adsorption conditions of Cu2+, Hg2+, Pb2+ and Cd2+. Under normal temperature and neutral condition, just 20 min, the removal efficiency of any Fe3O4@SiO2-NH-HCGs is more than 96%. In addition, these Fe3O4@SiO2-NH-HCGs have good stability and reusability. Their removal efficiency has no obvious decrease after being used seven times. After the experiments were finished, Fe3O4@SiO2-NH-HCGs were conveniently separated via an external magnetic field due to superparamagnetism. These results indicate that these Fe3O4@SiO2-NH-HCGs are potentially attractive materials for the removal of heavy metal ions from industrial wastewater.

Synthesis of Ethylenediaminetetraacetic Acid-Functionalized Chitosan Cryogels as Potential Sorbents of Heavy Metal Ions

2021 ◽  
Vol 58 (2) ◽  
pp. 155-166
Author(s):  
Maria Marinela Lazar ◽  
Ionel Adrian Dinu ◽  
Maria Valentina Dinu
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Ethylenediaminetetraacetic Acid ◽  
Tubular Structures ◽  
Retention Capacity ◽  
Ft Ir ◽  
Spectroscopy Optical ◽  
Porosity Measurements ◽  
Ft Ir Spectroscopy

An original functionalization strategy is proposed here to design chitosan (CS)-based cryogels with ethylenediaminetetraacetic acid (EDTA) moieties. Cryogels with aligned micro-sized tubular structures were further engineered through an unidirectional freezing approach. Attachment of EDTA groups onto CS chains was proved by 1H-RMN and FT-IR spectroscopy. The formation of EDTA-functionalized 3D porous CS-based cryogels was demonstrated by several methods of characterization (FTIR spectroscopy, optical microscopy, SEM, porosity measurements, swelling behavior, copper (II) retention capacity). The sorption tests pointed out the high potential of EDTA-functionalized CS-based cryogels for heavy metal ions retention.

Facile fabrication of silk protein sericin-mediated hierarchical hydroxyapatite-based bio-hybrid architectures: excellent adsorption of toxic heavy metals and hazardous dye from wastewater

RSC Advances ◽  
2016 ◽  
Vol 6 (89) ◽  
pp. 86607-86616 ◽  
Author(s):  
Pradyot Koley ◽  
Makoto Sakurai ◽  
Toshiaki Takei ◽  
Masakazu Aono
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Ions ◽  
Congo Red ◽  
Heavy Metal Ions ◽  
Silk Protein ◽  
Toxic Heavy Metals ◽  
Toxic Heavy Metal ◽  
Hybrid Architectures ◽  
Facile Fabrication

Facilely fabricated silk protein sericin-mediated hierarchical hydroxyapatite hybrid architectures show excellent adsorption of toxic heavy metal ions of Pb(ii), Cd(ii) and Hg(ii) and a hazardous dye, Congo red (CR), from wastewater.

scholarly journals Application of the FT-IR/PAS and DRS Methods for Studying Heavy Metal Ions Sorption οn the Inorganic Sorbents

2009 ◽  
Vol 116 (3) ◽  
pp. 407-409 ◽  
Author(s):  
P. Rusek ◽  
Z. Hubicki ◽  
G. Wójcik ◽  
A. Debczak
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Ft Ir
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