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- W2355147968 abstract "The degradation kinetics of 3,3',4,4'-tetrachlorobiphenyl(PCB77) by nanometer-sized Fe0,Fe3O4 system and different factors that affected the degradation efficiency were studied.The results showed that nanometer-sized Fe0 could degrade PCB77 in aqueous solution efficiently.When the initial concentration of PCB77 was 5 g·L-1 and the dose of nanometer-sized Fe0 was 5 g·L-1,the residual rate of PCB77 in aqueous solution was 8.94% after 240 minutes.Different doses of nanometer-sized Fe0 and Fe3O4 could influence the PCB77 degradation rate significantly.When the nanometer-sized Fe0/Fe3O4 dosing ratios were 1:0.1,1:0.2 and 1:1,residual rates of PCB77 in aqueous solution were 6.46%,10.23% and 38.20%,respectively.The solution pH also had a great influence on PCB77 degradation by nanometer-sized Fe0 and Fe3O4 system.From our experiments when the pH value was 6.8,degradation efficiency of PCB77 by nanometer-sized Fe0 and Fe3O4 system was highest among different pH condition.Degradation of PCB77 by nanometer-sized Fe0 and Fe3O4 system was a dechlorination process and the chlorion concentration increased with the decreasing residual rate of PCB77.Meanwhile,oxidation-reduction potential was declined accordingly.The research will not only provide an efficient method for removing residual PCBs in the environment,but also support the restoration theory of PCBs contaminated soil and water." @default.
- W2355147968 created "2016-06-24" @default.
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- W2355147968 date "2012-01-01" @default.
- W2355147968 modified "2023-09-28" @default.
- W2355147968 title "Degradation Kinetics of PCB77 in Aqueous Solution by Nanometer-sized Fe~0 and Fe_3O_4 System" @default.
- W2355147968 hasPublicationYear "2012" @default.
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