Title :
Degradation of Humic Acid by TiO2 Nonutubes/UV/O3
Author :
Pan, Liuming ; Ji, Min ; Lu, Bin ; Wang, Xiuduo ; Zhao, Lejun
Author_Institution :
Sch. of Environ. Sci. & Eng., Tianjin Univ., Tianjin, China
Abstract :
Titanium dioxide nanotubes were prepared and used as catalyzers for titanium dioxide nanotubes/UV/O3 to degrade humic acid. And the optimal parameters of titanium dioxide nanotubes/UV/O3 were investigated. The combined treatment showed the synergetic effect of photocatalysis and ozonation. When calcined at 400degC, titanium dioxide nanotubes had the best catalysis for photocatalytic ozonation. With a view of TOC removal and treatment cost, the best degradation of humic acid by titanium dioxide nanotubes/UV/O3 was obtained to 80.12% under the optimal condition, which was the reaction temperature of 30degC, pH value of 8.5-10.7, titanium dioxide nanotubes dosage of 0.4 g/L, ozone dosage of 0.383 g/h and light intensity of 0.62 mW/cm2.
Keywords :
calcination; catalysis; catalysts; nanofabrication; nanotubes; pH; photochemistry; titanium compounds; TiO2; calcination; catalyzers; humic acid degradation; light intensity; ozone dosage; pH value; photocatalytic ozonation; synergetic effect; temperature 30 C; temperature 400 C; titanium dioxide nanotubes-UV-O3; Cooling; Degradation; Design engineering; Inductors; Magnetic materials; Nanotubes; Surface treatment; Temperature; Titanium; Water heating; humic acid; ozonation; photocatalysis; titanium dioxide nanotubes;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.550
