Performance of COD removal from acid scarlet BS-containing solution in a novel packed-bed hollow-tube photocatalytic (PHP) reactor.
A novel packed-bed hollow-tube photocatalytic (PHP) reactor using TiO2-coated Ti particles as fillers was designed and applied to treat a simulated dye wastewater containing Acid Scarlet BS. The experimental results showed that PHP reactor could efficiently remove chemical oxygen demand (COD) from the dye solution and the COD removal efficiency was considerably dependent on the operating parameters, airflow, initial dye concentration and initial pH value of solution. It was also found that the inserting of the hollow tubes could apparently increase the COD removal efficiency of the packed-bed photo-reactor while the application of external electric field could improve the degradation efficiency of the dye but not obviously promote COD removal.
Xiong
Ya
Y
School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou, PR China. cesxya@zsu.edu.cn
He
Chun
C
An
Taicheng
T
Yu
Quan
Q
Zha
Changhong
C
Zhu
Xihai
X
D001391:Azo Compounds / Q000737:chemistry* / Q000302:isolation & purification; D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry* / Q000302:isolation & purification; D005374:Filtration; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000737:chemistry*; D010777:Photochemistry; D014025:Titanium / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification
D001391:Azo Compounds; D004396:Coloring Agents; C009495:titanium dioxide; D014025:Titanium; D010100:Oxygen