Technology offer : Biotreatment of contaminated soils via a new co-culture of anaerobic mesophilic bacteria

Technology's description

So far, the known method to biologically eliminate pollutants in a sediment, soil or affluent may not be as efficient and eco-friendly as it is usually required.

The invention described here relates to a co-culture of a particularly resistant bacterium of the Mesotoga lineage and at least one hydrogenotrophic sulfato-reducing bacterium. The process is proved to be a method of heavy metals contaminated sediment treatment. 

This specific culture of bacteria is particularly efficient in the treatment of phosphogypsum, an industrial waste formed during the production of phosphate fertilizer by treating apatite and phosphorite with sulfuric acid. Those gypsum can be toxic, radioactive and hazardous for the environment. Furthermore, Phosphogypsum are toxic for common bacteria. 

The proposed treatment can be performed with temperatures ranging from 25C to 55C and particularly from 30C to 40C. The receptor element can be Sulfur or heavy metals (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sn or Tl). The donor element can be of several forms (such as Lactate, Fructose, Chlorophenolic). 


  • High treatement performances with simple implementation ;
  • High bacteria resistance & tolerance to the toxic environment ;
  • Large range of metals detoxification ; 
  • Ecological process, environmental friendly approach ; 
  • High resistance to metal contamination ;
  • Cost efficient comparing to other methods.
    • Low cost solution.
Ref : OT-00067

Area of activity : ENVIRONMENT

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Industrial applications

  • Soil & industrial effluent treatments - Bioremediation.

Intellectual property

  • Patent

Technology transfer

  • Co-development with licensing agreement
  • License


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