US EPA

2510792 

Journal Article 

Heterogeneous catalytic ozonation of dibutyl phthalate in aqueous solution in the presence of iron-loaded activated carbon 

Huang, Y; Cui, C; Zhang, D; Li, L; Pan, D 

2015 

Yes 

Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298 

PERGAMON-ELSEVIER SCIENCE LTD 

OXFORD 

Chemosphere. 2015, Jan; 119:295-301. [Chemosphere] 

119 

295-301 

English 

25036944 

10.1016/j.chemosphere.2014.06.060 

WOS:000347739600040 

http://www.sciencedirect.com/science/article/pii/S0045653514008078
Exit
 

Iron-loaded activated carbon was prepared and used as catalyst in heterogeneous catalytic ozonation of dibutyl phthalate (DBP). The catalytic activity of iron-loaded activated carbon was investigated under various conditions and the mechanisms of DBP removal were deduced. Characterization of catalyst indicated that the iron loaded on activated carbon was mainly in the form of goethite, which reduced its surface area, pore volume and pore diameter. The presence of metals on activated carbon positively contributed to its catalytic activity in ozonation of DBP. Iron loading content of 15% and initial water pH of 8 achieved highest DBP removal among all the tried conditions. Catalyst dosage of 10mgL(-1) led to approximately 25% of increase in DBP (initial concentration 2mgL(-1)) removal in 60min as compared with ozone alone, and when catalyst dosage increased to 100mgL(-1), the DBP removal was further improved by 46%. Based on a comparison of reaction rates for direct and indirect transformation of DBP, the increased removal of DBP in this study likely occurred via transformation of ozone into hydroxyl radicals on the catalyst surface. 

Carbon/chemistry; Catalysis; Dibutyl Phthalate/chemistry; Iron/chemistry; Ozone/chemistry; Solutions; Water Pollutants, Chemical/chemistry; Water Purification; Degradation mechanism; Dibutyl phthalate; Heterogeneous catalytic ozonation; Iron-loaded activated carbon; 2286E5R2KE; 66H7ZZK23N; 7440-44-0; E1UOL152H7