Biosealing

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 1/20 (2006.01) C12N 1/00 (2006.01) E02D 3/12 (2006.01) E02D 19/16 (2006.01) E02D 37/00 (2006.01) C09K 8/50 (2006.01)

Patent

CA 2651590

The invention relates to a method to repair a leak in a geological structure or a construction comprising a geological material, comprising administering a liquid nutrient composition, comprising an energy source for anaerobic bacteria and a multivalent metal ion upstream of the leak allowing micro-organisms present in the structure or construction to ferment the energy source and to grow, thereby increasing biomass in and/or around the leak releasing mineral particles upstream of the leak allowing the mineral particles to migrate to the leak; and allowing the mineral particles to settle in the biomass.

La présente invention concerne un procédé de réparation d'une fuite dans une structure géologique ou dans une construction comprenant une matière géologique. Selon l'invention, le procédé comprend les étapes suivantes : administrer une composition nutritive liquide contenant une source d'énergie pour les bactéries anaérobies et un ion métallique multivalent en amont de la fuite ; laisser aux micro-organismes présents dans la structure ou dans la construction le temps de faire fermenter la source d'énergie et de se développer, ce qui augmente la biomasse dans la fuite et/ou autour de la fuite ; libérer des particules minérales en amont de la fuite ; permettre aux particules minérales de migrer vers la fuite ; et laisser les particules minérales s'installer dans la biomasse.

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