THE REMOVAL OF FLUORIDE ION FROM AQUEOUS SOLUTION BY MAGNESIUM OXIDE

1955 ◽  
Vol 33 (10) ◽  
pp. 1629-1630 ◽  
Author(s):  
John C. Bartlet ◽  
Ross A. Chapman
Keyword(s):  
Aqueous Solution ◽  
Magnesium Oxide ◽  
Fluoride Ion

not available

scholarly journals Microscale flower-like magnesium oxide for highly efficient photocatalytic degradation of organic dyes in aqueous solution

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7338-7348 ◽  
Author(s):  
Yajun Zheng ◽  
Liyun Cao ◽  
Gaoxuan Xing ◽  
Zongquan Bai ◽  
Jianfeng Huang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Degradation ◽  
Magnesium Oxide ◽  
Photocatalytic Performance ◽  
Organic Dyes ◽  
Precipitation Method ◽  
Highly Efficient

Flower-like MgO microparticles with excellent photocatalytic performance in degradation of various organic dyes were synthesized by a facile precipitation method via the reaction between Mg2+ and CO32− at 70 °C.

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

Preparation and Characterization of Pb2SnF6, The First Lead(II)-TIN(II) Fluoride that is a Superstructure of A-PbF2

2002 ◽  
Vol 755 ◽  
Author(s):  
Raimondo Calandrino ◽  
Anthony Collin ◽  
Georges Dénés ◽  
Morgane Logiou ◽  
M. Cecilia Madamba
Keyword(s):  
Aqueous Solution ◽  
Lattice Distortion ◽  
The Other ◽  
Fluoride Ion ◽  
Fluorite Type ◽  
New Phase ◽  
Ion Conductors

ABSTRACTAll the known phases in the PbF2/SnF2 system have structures derived from the fluorite-type β-PbF2, and are either disordered, and therefore cubic, or ordered with lattice distortion and superstructures. In addition, they are the highest performance fluoride-ion conductors, with PbSnF4 being the very best. In this work, a new phase, Pb2SnF6 has been prepared and characterized. Contrary to the other lead(II) tin(II) fluorides known up to date, the structure of Pb2SnF6 is a superstructure of a-PbF2, instead of β-PbF2, with a large (4 × 4) bidimensional supercell. Pb2SnF6 is prepared by the reaction of a-PbF2 with an aqueous solution of SnF2.

Fluoride ion complexation by a cationic borane in aqueous solution

2007 ◽  
pp. 1133 ◽  
Author(s):  
Min Hyung Lee ◽  
Tomohiro Agou ◽  
Junji Kobayashi ◽  
Takayuki Kawashima ◽  
Fran?ois P. Gabba?
Keyword(s):  
Aqueous Solution ◽  
Fluoride Ion ◽  
Ion Complexation

Effects of Fluoride Dentifrices on Enamel Lesion Formation

2008 ◽  
Vol 87 (3) ◽  
pp. 224-227 ◽  
Author(s):  
S. Toda ◽  
J.D. Featherstone
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Ion Concentration ◽  
Fluoride Ion ◽  
Lesion Formation ◽  
Cross Sectional ◽  
Human Enamel ◽  
Amine Fluoride ◽  
Ph Cycling

An in vitro pH cycling model was used to test the hypothesis that the effects of 3 different fluoride compounds on de/remineralization are a function of the free fluoride ion concentration. Groups of 10 human enamel specimens were treated with one of: (a) amine fluoride (AmF), 1250 ppm F; (b) sodium monofluorophosphate (NaMFP), 1000 ppm F; (c) sodium fluoride (NaF), 1100 ppm F; (d) NaF, 250 ppm F; (e) Placebo (< 1 ppm F) dentifrices; or with aqueous solutions (f) NaF 900 ppm F or (g) NaF 30 ppm F. Lesions were assessed by cross-sectional microhardness. Mean ± SEM ΔZ (vol.% x μm) values of 3 dentifrices were: (a) 344 ± 155, (b) 4259 ± 257, and (c) 591 ± 83. The AmF (1250 ppm F) was not statistically significantly different from the NaF (1100 ppm F) dentifrice in this model. The NaMFP (1000 ppm F) dentifrice, without hydrolysis, had only the same efficacy as the NaF (30 ppm F) aqueous solution.

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