DocumentCode :
577401
Title :
The use of titanium dioxide in the process of water purification
Author :
Smirnova, Valentina ; Nazarenko, Olga ; Ilyin, Alexander
Author_Institution :
Tomsk Polytechnic University, 30 Lenin Ave, Tomsk, 634050, Russia
fYear :
2012
fDate :
18-21 Sept. 2012
Firstpage :
1
Lastpage :
4
Abstract :
This paper relates to the problem of drinking water contaminants from soluble heavy metals. Proposed for sorption purification of water using titanium dioxide, which was synthesized by chemical and electrochemical methods. The synthesized products are nanostructured compounds x-ray amorphous and crystalline titanium dioxide. Adsorbed and crystallization water is removed by heating from sorbent to 110°C in air. To stabilize the amorphous structure of the sorbent calcined at 600°C. At the same time formed titanium dioxide, containing two crystalline phases: anatase and rutile. Sorption properties with respect to the soluble ions of Fe+2/Fe+3 and Mn+2 was investigated in static mode, using titanium dioxide powders synthesized in acidic, neutral and alkaline media. Pre-sorbents were subjected to activation by the action of ultrasound (22 kHz, 0.15 W/cm2). The best results were obtained using a titanium dioxide powder, which was synthesized in an alkaline environment. For practical use of sorbent needed to achieve two objectives: to transfer the sorbent powder into pellets with preservation of the active surface, resistant to water and to develop a system of regeneration of used sorbent. In this paper we studied the water resistance of granular titanium dioxide and how it can regenerate after purification.
Keywords :
crystallisation; purification; X-ray amorphous; alkaline environment; alkaline media; amorphous structure; crystalline titanium dioxide; crystallization water; drinking water contaminants; electrochemical method; granular titanium dioxide; pellets; presorbents; soluble heavy metals; sorbent powder; sorption purification; temperature 110 C; temperature 600 C; titanium dioxide powders; water purification process; water resistance; Absorption; Impurities; Ions; Iron; Manganese; Titanium; Ultrasonic imaging; IR spectroscopy; cavitation; the heavy metal impurities; thermal analysis; titanium dioxide; ultrasound treatment; water purification;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Strategic Technology (IFOST), 2012 7th International Forum on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1772-6
Type :
conf
DOI :
10.1109/IFOST.2012.6357529
Filename :
6357529
Link To Document :
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