Maize Stalk as Natural Ion Exchanger for Hazardous Pollutants

2017 ◽  
Vol 68 (8) ◽  
pp. 1726-1731
Author(s):  
Nicoleta Mirela Marin ◽  
Luoana Florentina Pascu ◽  
Ioana Stanculescu ◽  
Ovidiu Iordache ◽  
Denisa Jianu ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Kinetic Models ◽  
High Selectivity ◽  
Ion Exchanger ◽  
Exchange Equilibrium ◽  
Waste Waters ◽  
Cationic Species ◽  
Hazardous Pollutants ◽  
Tailing Ponds

This paper recommends maize stalk as a cheap natural ion exchanger. Ion exchange equilibrium was studied using thermodynamic and kinetic models. The results showed a high selectivity towards cationic species of antimony (III), molybdenum (VI), lead (II) and arsenium (III). Waste waters and sediments from tailing ponds samples were analysed.

ION Exchange Characterisation of Modified Zeolite

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2269-2272 ◽  
Author(s):  
Š Cerjan-Stefanovic ◽  
M. Kaštelan-Macan ◽  
T. Filipan
Keyword(s):  
Drinking Water ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Natural Zeolite ◽  
Deionized Water ◽  
Isomorphous Substitution ◽  
Waste Waters ◽  
Modified Zeolite ◽  
Water Drinking

Isomorphous substitution of phosphorus into a natural zeolite affords the possibility to change the overall framework charge from negative to positive. The substances so created should be used for purification of waste waters. The work describes the preparation of phosphated zeolite, their characterisation and examples of their anion exchange of NO3 on observed in deionized water, drinking water and in the solution containing varying amounts of nitrate.

pH dependence of ion-exchange equilibrium of proteins

AIChE Journal ◽  
1998 ◽  
Vol 44 (11) ◽  
pp. 2399-2409 ◽  
Author(s):  
J. C. Bosma ◽  
J. A. Wesselingh
Keyword(s):  
Ion Exchange ◽  
Ph Dependence ◽  
Exchange Equilibrium

Multi-component ion exchange kinetics with PAN-KCoFC composite ion exchanger

2005 ◽  
Vol 22 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Jei-Kwon Moon ◽  
Eil-Hee Lee ◽  
Yoon-Ju Han ◽  
Byung-Chul Lee ◽  
Hyung-Tae Kim
Keyword(s):  
Ion Exchange ◽  
Ion Exchanger ◽  
Ion Exchange Kinetics ◽  
Exchange Kinetics ◽  
Composite Ion Exchanger
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