[Kinetics model for photo-catalytic degradation of Rodamine B with TiO2 /SiO2 as catalyst].
A novel photo-catalytic reactor of three-phase internal circulation fluidized bed was employed to the photodegradation of Rhodamine B with TiO2/SiO2 carried on porous silica as photocatalyst. The degradation kinetics of Rodaming B is investigated in the reactor. It is found that the degradation of Rodaming B conform hyperbola model, the reciprocal of degradation rate 1/X is proportional to the reciprocal of time 1/t. The reaction rate constant has no relation with initial reactant concentration and is proportional to the light density and volumetric rate of energy absorption. The reaction rate conforms the experiment results quite well, the average relative error being less 3.25%.
You
Hong
H
School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. yokelist@vip.sina.com
Yao
Jie
J
Luo
Wei-Nan
WN
Chen
Ping
P
D019149:Bioreactors; D002384:Catalysis / Q000528:radiation effects; D004785:Environmental Pollutants / Q000737:chemistry; D007700:Kinetics; D008962:Models, Theoretical; D010777:Photochemistry; D012235:Rhodamines / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D018505:Waste Management / Q000379:methods
D004785:Environmental Pollutants; D012235:Rhodamines; C009495:titanium dioxide; D012822:Silicon Dioxide; D014025:Titanium; C029773:rhodamine B