ISCO using activated sodium persulphate is a widely used technology for treating chlorinated solvent source zones. In sensitive areas, however, high groundwater sulphate concentrations following treatment may be a drawback. In situ biogeochemical transformation, a technology that degrades contaminants via reduced iron minerals formed by microbial activity, offers a potential solution for such sites, the bioreduction of sulphate and production of iron sulphides that abiotically degrade chlorinated ethenes acting as a secondary technology following ISCO. This study assesses this approach in the field using hydrochemical and molecular tools, solid phase analysis and geochemical modelling. Following a neutralisation and bioaugmentation, favourable conditions for iron- and sulphate-reducers were created, resulting in a remarkable increase in their relative abundance. The abundance of dechlorinating bacteria (Dehalococcoides mccartyi, Dehalobacter sp. and Desulfitobacterium spp.) remained low throughout this process. The activity of iron- and sulphate-reducers was further stimulated through application of magnetite plus starch and microiron plus starch, resulting in an increase in ferrous iron concentration (from

• MeSH
• chemické látky znečišťující vodu analýza   metabolismus   MeSH
• chlor metabolismus   MeSH
• Chloroflexi metabolismus   MeSH
• čištění vody metody   MeSH
• Desulfitobacterium metabolismus   MeSH
• ethyleny metabolismus   MeSH
• halogenace MeSH
• oxidace-redukce MeSH
• Peptococcaceae metabolismus   MeSH
• podzemní voda analýza   chemie   mikrobiologie   MeSH
• regenerace a remediace životního prostředí metody   MeSH
• rozpouštědla metabolismus   MeSH
• sírany metabolismus   MeSH
• sloučeniny sodíku MeSH
• tetrachlorethylen analýza   metabolismus   MeSH
• trichlorethylen analýza   metabolismus   MeSH
• železo metabolismus   MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH