00000nam 2200000za 4500 9.867204 CaOODSP 20241203113645 cr ||||||||||| 190117s2003 onc #ot f|0| 0 eng d CaOODSP eng eng fre n-cn--- En13-5/03-177E-PDF Biobarriers in fractured bedrock [electronic resource] : from laboratory concept to field demonstration / Nathalie Ross ... [et al.]. [Burlington, Ont.] : Environment Canada, [2003] [9] p. : figures. NWRI contribution ; no. 03-177 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. "The concept of biobarriers for the control of groundwater flow has been studied at laboratory-scale using a multidisciplinary approach and has been scaled up to a field demonstration undertaken in Mississauga (Ontario, Canada). In a limestone single fracture, the biostimulation led to a decrease of 99.2 % in the hydraulic conductivity after 22 days. The testing of monitoring tools, including the modeling of tracer experiments, showed the potential of the groundwater velocity, the planktonic bacteria, the oxidation-reduction potential to provide an insight into the fracture bioclogging. These results suggest that the development of a persistent biofilm, having sufficient hydraulic to significantly alter and groundwater flow in natural fractures in a field setting, is indeed possible"--Abstract. Abstracts in French and English. gccst Groundwater Ross, Nathalie. Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 03-177. (CaOODSP)9.844121 PDF 774 KB https://publications.gc.ca/collections/collection_2019/eccc/En13-5-03-177-eng.pdf