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DECANO

Bacterial DEgradation and environmental impact of CArbon NOnotubes

Publié le 27 novembre 2015

Study of the interactions between functionalized CNTs and bacteria, and development of bioremediation processes of CNTs involving naturally occurring bacterial systems

2011-2015

ANR CESA

Coordinateur : Alberto Bianco - CNRS

Carbon nanotubes (CNTs) represent an emerging nanomaterial for a wide range of applications both in materials science and biomedicine. The increase production of CNTs, their processing and eventual incorporation into new types of composites and/or into biological systems has raised fundamental issues on the impact of CNTs on health and environment. In the context of studies on the environmental release of CNTs, accumulation and degradation of CNTs are very limited. Potential exposure routes are multiple. Depending on the life cycles of the products and their fate, CNTs may cause different environmental health effects. The study of the destiny of the types of CNTs released in the environment is important to avoid possible risks of contamination, pollution and damages to the living systems. As CNTs will be present in the environment at certain concentration, terrestrial and aquatic microorganisms coming in contact with the CNTs will integrate such materials and eventually try to eliminate using their metabolic capacities of degradation. In this context, the main objective of the DECANO project is to study the interactions between functionalized CNTs and bacteria. We will explore the possibility that these bacteria possessing high enzymatic activities (i.e. oxidative action) could carry out the degradation of CNTs. We will also assess the potential toxicity of products arising from the degradation of CNTs. In parallel, we will analyze the impact of CNTs and their biodegradation products on the bacterial populations and the ecotoxicity on an amphibian model. The ultimate goal of the DECANO project is the development of bioremediation processes of CNTs involving naturally occurring bacterial systems.

 

Partenaires 

  • CNRS, UPR3572 (ex UPR9021) 
  • CEA/Saclay 
  • CIRIMAT 
  • CNRS-CEA/Cadarache ​