Catalytic dechlorination of polychlorinated biphenyls in soil by palladium-iron bimetallic catalyst.
Pd/Fe bimetallic particles were synthesized by chemical deposition and used to dechlorinate 2,2',4,5,5'-pentachlorobiphenyl in soil. Batch experiments demonstrated that the Pd/Fe bimetallic particles could effectively dechlorinate 2,2',4,5,5'-pentachlorobiphenyl. Dechlorination was affected by several factors such as reaction time, Pd loading, the amount of Pd/Fe used, initial soil pH, and 2,2',4,5,5'-pentachlorobiphenyl concentration. The results showed that higher Pd loading, higher dosage of Pd/Fe, lower initial concentration of 2,2',4,5,5'-pentachlorobiphenyl and slightly acid condition were beneficial to the catalytic dechlorination of 2,2',4,5,5'-pentachlorobiphenyl. The degradation of 2,2',4,5,5'-pentachlorobiphenyl, catalyzed by Pd/Fe followed pseudo-first-order kinetics.
He
Na
N
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Li
Peijun
P
Zhou
Yuncheng
Y
Ren
Wanxia
W
Fan
Shuxiu
S
Verkhozina
V A
VA
D002384:Catalysis; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D010165:Palladium / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D012987:Soil; D012989:Soil Pollutants / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
D012987:Soil; D012989:Soil Pollutants; D010165:Palladium; C009828:2,4,5,2',5'-pentachlorobiphenyl; D011078:Polychlorinated Biphenyls; D007501:Iron