Application of nano TiO(2) towards polluted water treatment combined with electro-photochemical method.
A novel composite reactor was prepared and studied towards the degradation of organic pollutants in this work. In the reactor, a UV lamp was installed to provide energy to excite nano TiO(2), which served as photocatalyst, leading to the production of hole-electron pairs, and a three-electrode electrolysis system was used to accumulate H(2)O(2) which played an important role in the degradation process. The reactor was evaluated by the degradation process of rhodamine 6G (R-6G), and the data obtained in the experiments showed that the combination of the photochemical and electrochemical system raised the degradation rate of R-6G greatly; the working mechanism of the reactor was also discussed in the article. The prepared reactor was also utilized to treat polluted water from dyeing and printing process. After continuous treatment for 0.5h, chemical oxygen demand biochemical oxygen demand, quantity of bacteria and ammonia nitrogen of the polluted water were reduced by 93.9%, 87.6%, 99.9% and 67.5%, respectively, which indicated that the method used here could be used for effective organic dyes degradation.
Chen
Junshui
J
Department of Chemistry, East China Normal University, Zhongshan Bei Road North 3663, Shanghai 200062, China.
Liu
Meichuan
M
Zhang
Li
L
Zhang
Jidong
J
Jin
Litong
L
D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry*; D004563:Electrochemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D010777:Photochemistry; D012235:Rhodamines / Q000737:chemistry*; D013783:Textile Industry; D014025:Titanium / Q000737:chemistry*; D014876:Water Pollution / Q000517:prevention & control*; D018508:Water Purification / Q000379:methods*
D004396:Coloring Agents; D005456:Fluorescent Dyes; D012235:Rhodamines; C026188:rhodamine 6G; C009495:titanium dioxide; D014025:Titanium