[Extinction characteristics of TiO2 suspension for different band ultraviolet radiation].
This study focused on the global absorption characteristics of UVA, UVB and UVC radiation in the suspension of titanium-pollutant solution using 4-CBA-Na as a model pollutant. The result showed that the attenuation of ultraviolet in the suspensions conformed to Beer's Law, light intensity negative-exponentially attenuating with the optic path. The extinction coefficient increased with the titanium dosage by a quadratic polynomial law, which may be approximated by a linear function at lower dosage. The sum of the respective UVC or UVB extinction coefficient in pollutant solution and titanium-water suspension was found to approach the measured value in Titanium-Pollutant suspension. Larger extinction coefficient was observed for shorter UV wavelength, implying higher energy efficiency with UVC as ultraviolet source.
Meng
Y
Y
State Key Joint Laboratory of Environment Simulation and Pollution Control, Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China. meng_yb@mail.cic.tsinghua.edu.cn
Huang
X
X
Qian
Y
Y
D002384:Catalysis; D010084:Oxidation-Reduction; D013535:Suspensions; D014025:Titanium / Q000378:metabolism / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000528:radiation effects*
D013535:Suspensions; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D014025:Titanium