Preparation, characterization of organosmectites and fluoride ion removal

2013 ◽  
Vol 125 ◽  
pp. 10-17 ◽  
Author(s):  
S. Gammoudi ◽  
N. Frini-Srasra ◽  
E. Srasra
Keyword(s):  
Fluoride Ion ◽  
Ion Removal

scholarly journals Preparation and characterization of andisol-zeolite-fly ash-activated carbon (AZFC) as potential adsorbent for metal ion removal

2020 ◽  
Author(s):  
Antonius Agus Bambang Haryanto ◽  
Ari Handono Ramelan ◽  
MTh Sri Budiastuti ◽  
Pranoto
Keyword(s):  
Activated Carbon ◽  
Fly Ash ◽  
Metal Ion ◽  
Metal Ion Removal ◽  
Ion Removal

Fluoride ion removal from aqueous solution, groundwater, and seawater by granular and powdered Conocarpus erectus biochar

2017 ◽  
Vol 65 ◽  
pp. 375-386 ◽  
Author(s):  
Fatemeh Papari ◽  
Parham Rouhi Najafabadi ◽  
Bahman Ramavandi
Keyword(s):  
Aqueous Solution ◽  
Fluoride Ion ◽  
Ion Removal ◽  
Conocarpus Erectus

Electrical Characterization of the Structure and Other Phenomena in Superionic PbSnF4

1995 ◽  
Vol 411 ◽  
Author(s):  
Galina Milova ◽  
Georges Denes ◽  
M. Cecilia Madamba ◽  
M. Perfiliev
Keyword(s):  
Ion Mobility ◽  
Complex Impedance ◽  
Electrical Characterization ◽  
Fold Increase ◽  
Fluoride Ion ◽  
Fluoride Ions ◽  
Covalently Bonded ◽  
Frenkel Defects ◽  
Fluorite Type

ABSTRACTThe structure of PbSnF4 is derived from that of fluorite-type β-PbF2 The replacement of half the lead by tin results in a thousand-fold increase of the fluoride ion mobility, even though tin-fluorine bonds are strongly covalent. This is due to an increase of fluoride ion disorder on some sites. The structure of α-PbSnF4 can be interpreted as resulting from the insertion of two layers of [SnF]+ cations between each pair of layers of PbF8 cubes. This has profound bearings on the texture and properties of this material, since the tin(II) stereoactive lone pairs create very effective cleavage planes. In addition, the fluorine covalently bonded to tin occupy all vacant sites used to create Frenkel defects. However, superionicity is observed by complex impedance measurements. Transport number measurements show that fluoride ions are the charge carriers.

Note: Zr(IV)-Immobilized Resin Prepared by Surface Template Polymerization for Fluoride Ion Removal

2011 ◽  
Vol 29 (1) ◽  
pp. 146-156 ◽  
Author(s):  
Hidenobu Mizuki ◽  
Yudai Ito ◽  
Saba Samatya ◽  
Hisashi Harada ◽  
Hidetaka Kawakita ◽  
...  
Keyword(s):  
Fluoride Ion ◽  
Template Polymerization ◽  
Ion Removal
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