Catalytic activity of Ru/Al2O3 for ozonation of dimethyl phthalate in aqueous solution.
With dimethyl phthalate as the model pollutant and Ru/Al(2)O(3) as catalyst, this paper systemically investigates the removal of total organic carbon (TOC) of system. Our results have confirmed that Ru/Al(2)O(3) can significantly increase the effect of ozonation. TOC removal in 120 min can reach 72% while only 24% with ozone alone. The optimal catalyst preparing condition was 0.1 wt% Ru content, 600 degrees C calcination temperature, 0.5-1.0mm particle diameter, which is characterized by a high surface area and a large population of surface active sites. The contrasting experiments of ozone alone, catalyst adsorption after ozonation, and catalytic ozonation confirmed that catalytic reaction was the most important process to TOC removal in system with Ru/Al(2)O(3) as catalyst.
Yunrui
Zhou
Z
Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. zyr02@mails.tsinghua.edu.cn
Wanpeng
Zhu
Z
Fudong
Liu
L
Jianbing
Wang
W
Shaoxia
Yang
Y
D000537:Aluminum Oxide / Q000737:chemistry*; D002384:Catalysis; D010126:Ozone / Q000737:chemistry*; D010795:Phthalic Acids / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification / Q000379:methods
D010795:Phthalic Acids; D014874:Water Pollutants, Chemical; D014867:Water; C024629:dimethyl phthalate; D010126:Ozone; D012428:Ruthenium; D000537:Aluminum Oxide