Effects of Fe2O3, organic matter and carbonate on photocatalytic degradation of lindane in the sediment from the Liao River, China.
Fourteen sediment samples with different content of Fe2O3 were collected from the lower reaches of the Liao River in China. The photodegradation of lindane on the surfaces of these sediments was investigated to observe the effects of Fe2O3 and other photoinducable substances, such as TiO2 and organic substances, on photodegradation of lindane. A partial least-squares (PLS) analysis model was developed to find out the statistical relationship between the photodegradation and the contents of these photoinducable substances. It was concluded from the PLS analysis that inorganic carbon and organic carbon have negative effects, whereas Fe2O3 and TiO2 accelerate the photodegradation of lindane in the sediment samples when 365 nm UV light was used as light source. In all cases of the experiments, the photodegradation of lindane in the sediment samples were fitted for pseudo-first-order kinetics.
Quan
Xie
X
School of Environmental Science and Technology, Dalian University of Technology, Zhongshan Road 158-129, 116023 Dalian, PR China. xiequan@mail.dlptt.ln.cn
Niu
Junfeng
J
Chen
Shuo
S
Chen
Jingwen
J
Zhao
Yazhi
Y
Yang
Fenglin
F
D002254:Carbonates / Q000737:chemistry*; D002384:Catalysis; D002681:China; D005296:Ferrous Compounds / Q000737:chemistry*; D005618:Fresh Water; D019015:Geologic Sediments / Q000737:chemistry*; D001556:Hexachlorocyclohexane / Q000737:chemistry* / Q000528:radiation effects; D007700:Kinetics; D016018:Least-Squares Analysis; D008433:Mathematics; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000737:chemistry / Q000528:radiation effects; D010777:Photochemistry / Q000379:methods; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000528:radiation effects
D002254:Carbonates; D005296:Ferrous Compounds; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D001556:Hexachlorocyclohexane; D014025:Titanium; C034236:ferrous oxide