Carbon-chlorine bond hydrogenolysis

Recent studies show that zero-valent metals (e.g., iron, zinc, and palladium), sulfide minerals (like FeS and FeS2), and green rust can act as abiotic agents and increase the reductive dechlorination rates of chlorinated ethanes and ethenes. For example, in the presence of zero-valent iron, P-elimination is the main degradation pathway of chlorinated ethenes. In the P-elimination pathway, chlorines in vicinal carbon atoms are eliminated and a third C-C bond will be formed (Tobiszewski and Namiesnik, 2012 Brown et al., 2009 and Ma and Wu, 2008). Kara et al. (2005) reported fliat with P-elimination, TCE, c-DCE, and t-DCE reduction occmred 40, 10, 100 times faster, respectively, in comparison to hydrogenolysis (Kara et al. 2005). 

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