Ion-exchange kinetic studies for Cd(II), Co(II), Cu(II), and Pb(II) metal ions over a composite cation exchanger

2014 ◽  
Vol 54 (10) ◽  
pp. 2883-2890 ◽  
Author(s):  
Mu. Naushad ◽  
Alok Mittal ◽  
M. Rathore ◽  
V. Gupta
Keyword(s):  
Ion Exchange ◽  
Metal Ions ◽  
Cation Exchanger ◽  
Kinetic Studies ◽  
Exchange Kinetic

scholarly journals Electrical conductivity and ion-exchange kinetic studies of polythiophene Sn(VI)phosphate nano composite cation-exchanger

2019 ◽  
Vol 12 (7) ◽  
pp. 1652-1659 ◽  
Author(s):  
Anish Khan ◽  
Abdullah M. Asiri ◽  
Aftab Aslam Parwaz Khan ◽  
Sher Bahadar Khan
Keyword(s):  
Electrical Conductivity ◽  
Ion Exchange ◽  
Cation Exchanger ◽  
Kinetic Studies ◽  
Nano Composite ◽  
Exchange Kinetic

scholarly journals Fabrication of a lead ion selective membrane based on a polycarbazole Sn(iv) arsenotungstate nanocomposite and its ion exchange membrane (IEM) kinetic studies

RSC Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4210-4220
Author(s):  
Mohd. Zeeshan ◽  
Rais Ahmad ◽  
Asif Ali Khan ◽  
Aftab Aslam Parwaz Khan ◽  
Guillermo C. Bazan ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Polyvinyl Chloride ◽  
Cation Exchanger ◽  
Kinetic Studies ◽  
Ion Exchange Membrane ◽  
Lead Ion ◽  
Solution Technique ◽  
Casting Solution ◽  
Selective Membrane ◽  
Exchange Membrane

A polycarbazole-Sn(iv) arsenotungstate (Pcz-SnAT) nanocomposite cation exchanger membrane (CEM) was prepared via the casting solution technique utilizing polycarbazole-Sn(iv) arsenotungstate and PVC (polyvinyl chloride) as a binder.

scholarly journals Nanostructured faujasite zeolite as metal ion adsorbent: kinetics, equilibrium adsorption and metal recovery studies

2020 ◽  
Author(s):  
Mariana B. Goncalves ◽  
Djanyna V. C. Schmidt ◽  
Fabiana S. dos Santos ◽  
Daniel F. Cipriano ◽  
Gustavo R. Gonçalves ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Metal Ions ◽  
Metal Ion ◽  
Active Sites ◽  
Metal Removal ◽  
High Surface ◽  
High Surface Area ◽  
Kinetic Studies ◽  
Crystallization Time ◽  
X Ray

Abstract The hydrothermal synthesis of nano-faujasite has been successfully performed and the effects of some crystallization parameters were investigated, along with the use of this material as a heavy-metal ion adsorbent. X-ray diffraction patterns have shown that the structure of the nano-faujasite is strongly dependent on both the crystallization time and the alkalinity of the synthesis medium. According to N2 physisorption, X-ray fluorescence, SEM/EDS, and solid state 29Si and 27Al NMR data, the produced nano-faujasite consists of a solid with low molar Si/Al ratio (1.7), with high availability of ion exchange sites and high surface area/small particle size, allowing easy diffusion of metal ions to adsorbent active sites. As a consequence, an excellent performance on removal of Cd2+, Zn2+ and Cu2+ ions was found for this solid. The adsorption capacity followed the order Cd2+ (133 mg·g−1) > Zn2+ (115 mg·g−1) > Cu2+ (99 mg·g−1), which agrees with the order of increasing absolute values of the hydration energy of the metal ions. Kinetic studies and adsorption isotherms showed that the metal ion removal takes place by ion exchange on the monolayer surface of the nano-faujasite. The electrochemical recovery of copper in metallic form exhibited an efficiency of 80.2% after 120 min, which suggests that this process can be adequately implemented for full-scale metal removal.

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