scholarly journals Characterization and adsorption properties of cross-linked yeast/β-cyclodextrin polymers for Pb(ii) and Cd(ii) adsorption

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31542-31554 ◽  
Author(s):  
Zhengyang Duan ◽  
Mingyao Song ◽  
Tianguo Li ◽  
Shuli Liu ◽  
Xiaojun Xu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Properties ◽  
Cyclodextrin Polymer ◽  
Cyclodextrin Polymers

A cross-linked yeast/β-cyclodextrin polymer (Y–β-CDP) was synthesized to remove Pb(ii) and Cd(ii) from aqueous solution.

Crosslinker Chemistry Determines the Uptake Potential of Perfluorinated Alkyl Substances by β-Cyclodextrin Polymers

2018 ◽  
Author(s):  
Leilei Xiao ◽  
Casey Ching ◽  
Yuhan Ling ◽  
Mohammadreza Nasiri ◽  
Max Justin Klemes ◽  
...  
Keyword(s):  
Binding Affinity ◽  
Polymer Networks ◽  
Cyclodextrin Polymer ◽  
Perfluorinated Alkyl Substances ◽  
Cyclodextrin Polymers

This work describes several crosslinked β-cyclodextrin polymer networks and correlates the crosslinker chemistry with binding affinity for per- and polyfluorinated alkyl substances (PFASs), including PFOA and PFOS.

Preparation and Adsorption Properties of Starch-g-Polyacrylamide/Montmorillonite Nanocomposites

2015 ◽  
Vol 1120-1121 ◽  
pp. 343-346
Author(s):  
Cai Ning Zhang ◽  
Xu Man Wang
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Adsorption Capacity ◽  
Crosslinking Agent ◽  
Adsorption Properties ◽  
Experimental Results ◽  
Solution Polymerization ◽  
Preparation Conditions ◽  
Montmorillonite Nanocomposites

By means of solution polymerization, a series of cross-linked starch-g-polyacrylamide/ montmorillonite (St-g-PAM/MMT) nanocomposites were prepared and used to adsorb methylene blue (MB). The effects of different preparation conditions on the adsorption capacity of the nanocomposites were investigated. The experimental results demonstrated that the prepared St-g-PAM/MMT nanocomposites were effective adsorbents for removal of MB from aqueous solution. Furthermore, adsorption capacity increased with the MMT contents up to 14% and decreased as the MMT contents further increased. Adsorption capacity increased with the increasing of the ratio of starch to acrylamide, whereas adsorption capacity decreased with the increasing of crosslinking agent contents.

scholarly journals Removal of Aromatic Chlorinated Pesticides from Aqueous Solution Using β-Cyclodextrin Polymers Decorated with Fe3O4 Nanoparticles

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1038 ◽  
Author(s):  
Sebastián Salazar ◽  
Daniel Guerra ◽  
Nicolás Yutronic ◽  
Paul Jara
Keyword(s):  
Aqueous Solution ◽  
Pollutant Removal ◽  
Proton Nuclear Magnetic Resonance ◽  
Aquatic Environments ◽  
Chlorinated Pesticides ◽  
Magnetization Saturation ◽  
Chlorophenoxyacetic Acid ◽  
Cyclodextrin Polymers ◽  
Improved Technology ◽  
Granulated Activated Carbon

This article describes the sorption properties of cyclodextrin polymers (nanosponges; NS) with the pesticides 4-chlorophenoxyacetic acid (4-CPA) and 2,3,4,6-tetrachlorophenol (TCF), including an evaluation of its efficiency and a comparison with other materials, such as granulated activated carbon (GAC). NS-pesticide complexes were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray powder diffraction (XRPD), proton nuclear magnetic resonance (1H-NMR), UV–VIS, and thermogravimetric analysis (TGA). This confirms the interactions of the guests with nanosponges and shows that the polymers have favorable sorption capacities for chlorinated aromatic guests. Our studies also show that the inclusion complex is predominantly favored for NS/CPA rather than those formed between TCF and NS due to the size of the adsorbate and steric effects. Sorption studies carried with repeated cycles demonstrate that NS polymers could be an improved technology for pollutant removal from aquatic environments, as they are very efficient and reusable materials. Our experiments and characterization by SEM, EDS, UV–VIS, and magnetization saturation (VSM) also show that NS is an optimal substrate for the deposition of magnetite nanoparticles, thus improving the usefulness and properties of the polymer, as the nanosponges could be retrieved from aqueous solution with a neodymium magnet without losing its efficiency as a pesticide sorbent.

Dynamic Surface Adsorption Properties of Sodium Dodecyl Sulfate Aqueous Solution

2013 ◽  
Vol 29 (02) ◽  
pp. 351-357 ◽  
Author(s):  
FAN Hai-Ming ◽  
◽  
◽  
ZHANG Yi-Nuo ◽  
ZHANG Jin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Surface Adsorption ◽  
Adsorption Properties ◽  
Dynamic Surface ◽  
Dodecyl Sulfate
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