Technology offer : Lead phytoextraction & phytostabilization in contaminated soils using Cistus libanotis

Technology's description

Heavy metals present next to some industrial sites or land can spread in the air, water and soils and contaminate crops and groundwaters.

In order to fight against this phenomenon, IRD, INRA, CNESTEN, Mohammed V University and the University Abdelmalek Essaadi have patented a process using Cistus Libanotis which extracts and reduces the mobility of lead in the soils. This plant has the advantage of being a pioneer plant, persistent and exhibits rapid growth. This natural process, innovative and environmentally friendly is the right solution to overcome the mobility of lead and a few other metals in the vicinity of contaminated sites.

Belonging to Cistaceae family, Cistus libanotis exhibits the capacity to extract Lead (Pb and a few other elemnts) in contaminated soils. In particular, Lead is absorbed via the root system and stored in the plant and leaves. Lead concentrations higher than 1000 mg/kg can be stored in the plants.

On-site implementation is easy with using seeds or plants in areas as wide as required. The plants can be harvested every 3 to 5 years and incinerated to recover the metal(s) in the ash. Subsequent treatment can be applied to obtain pure metals.


  • Efficient decontamination of Lead (Pb) and a few other elements,
  • Easy to implement in-situ at any scale,
  • Economically advantageous when compared to conventional physico-chemical methods of soil treatment,
  • Environmental friendly,
  • Sustainable process.
Ref : OT-00004

Area of activity : ENVIRONMENT

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Industrial applications

  • Phytoextraction & Phytostabilization of Lead (Pb) in contaminated lands, vicinity of mining and storage sites, site reclaiming.

Intellectual property

  • This technologie is protected by a patent

Technology transfer

  • Co-development with licensing agreement
  • Know-how
  • License


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