Remediation of chloroform in fine‐textured soil using zero‐valent iron

Chloroform, a probable human carcinogen, is mainly produced anthropogenically for industrial use and may be released to the environment from large number of sources related its manufacture use, including pulp paper mills, hazardous waste sites, sanitary landfills. Remediation chloroform through conventional technologies has been met with limited success due conditions required formation substances such as dichloromethane. The objective this study was investigate reduction in multicontaminated fine-textured soil using zero-valent iron (Fe0) anaerobic microcosms. Four amended matrices were tested: simple matrix control (glass beads), beads + soil), Fe0 Fe0), (soil Fe0). Headspace transformation products dichloromethane, chloromethane, methane measured over 230 days during short intervals initial 3 days. Chloroform (~0.3 mM mass) persisted both microcosms but completely transformed containing by 12 h glass 48 h. Reductive dechlorination occurred simultaneous production dichloromethane (~0.11 0.14 chloromethane (~0.02 0.13 mass). Little (~0.07 0.26 μM an end product observed Fe0. Produced almost disappeared results showed complete pathway that good potential remediation chlorinated compounds soil. role clay minerals redox reactions can further investigated improve reductive contaminated environments.