Heterogeneous reductive dehalogenation of PCB contaminated transformer oil and brominated diphenyl ethers with zero valent iron

► Reductive dehalogenation of PCBs and PBDEs at 350-600 °C with ZVI in N2. ► Waste transformer oil acts as its own proton donor. ► Alkanes can serve as proton donors. ► NO halogenated organic products are observed; all halides remain on the iron.