Decoupling Fe Application and Bioaugmentation in Space and Time Enables Microbial Reductive Dechlorination of Trichloroethene to Ethene: Evidence from Soil Columns.

Fe is a powerful chemical reductant with applications for remediation of chlorinated solvents, including tetrachloroethene and trichloroethene. Its utilization efficiency at contaminated sites is limited because most of the electrons from Fe are channeled to the reduction of water to H rather than to the reduction of the contaminants. Coupling Fe with H-utilizing organohalide-respiring bacteria (i.

Synergistic Zerovalent Iron (Fe) and Microbiological Trichloroethene and Perchlorate Reductions Are Determined by the Concentration and Speciation of Fe.

Trichloroethene (TCE) and perchlorate (ClO) are cocontaminants at multiple Superfund sites. Fe is often used during TCE bioremediation with to establish anoxic conditions in the aquifer. However, the synergy between Fe abiotic reactions and microbiological TCE and ClO reductions is poorly understood and seldom addressed in the literature.