The Project

 

Capacitive deionization (CDI) is an emerging technology for the facile removal of charged ionic species from aqueous solutions, and is currently being widely explored for water desalination applications. The technology is based on ion electrosorption at the surface of a pair of electrically charged electrodes, commonly composed of highly porous carbon materials.

NANOPOL project aims at the development of novel electrochemical processes for water desalination and wastewater treatment applications using nanocomposite electrodes consisted of nanocarbon materials and conductive polymers (membrane-assisted capacitive deionization, mCDI).

In this way the system’s performance can be improved (up to 50%) as compared to the common CDI.

The Project - E6E23851

The Project - B56211CD

Methodology

Τhe main stages of the project concern the following:

  • Development of novel nanocomposite electrodes and ion-exchange membranes using nanocarbon materials (carbon nanotubes, graphene etc.) and conductive polymers.
  • Development of novel electrochemical-based processes using carbon-based nanocomposite electrodes and ion exchange membranes for water desalination, wastewater treatment (e.g., removal of heavy metals, selective demineralization, etc.).
  • Simulation studies for process optimization.
  • Demonstration of the developed technology and industrial exploitation.

The Project - 2A21D6F8

            [Source: Progress in Materials Science 58 (2013) 1388-1442]

The Project - 265A5F88Nanocarbon Materials

 

Graphene, carbon nanotubes, carbon nanofibres and other 2-dimensional materials will be utilized.

 

The Project - E2DAF541

The Project - 50F3E699

The Project - 265A5F88Polymers

 

Polymeric materials of interest are polypyrrole and polyaniline, as well as their modified nanostructures for compatibility enhancement.

Other polymers can be proposed as alternatives to enhance the anionic or cationic character of the membranes.

 

Conductive Polymers (PANI) 

The Project - B74C650B

 Ion Exchange Membranes

The Project - FEE170BA

 

                        

The Project - 11911E2F

Carbon Modification

 

Methods to be applied for the improvement of the nanocarbon materials’ properties:

  • Surface modification using different suitably selected functional groups, amines, etc.
  • Increase of the porosity, control of the conduction, doping with N.

The Project - AAFBEDA3

 

Impregnation Techniques

 

  • Dry phase inversion method, where rGO / polyaniline (PANI) is added to a polyvinydene fluoride (PVDF) matrix.
  • Polymerization of the aniline in the presence of dispersed rGO sheets.
  • Electropolymerization (electrochemical deposition) of aniline using various dispersants in the presence of GO and / or MWCNTs.

The Project - 45107A8C

The Project - 11C11B45

The Project - DE12E639

                                                                                                                                                   [Source: Energy Environ. Science 7 (2014) 3683-3689]

      Electrochemical Processes

 

  • The system that will be developed within NANOPOL Project will be applied in a water desalination process. The results will be compared with that of existing technologies (resins, etc.).
  • A modified system will be applied for the treatment of wastewaters from metallurgical processes that are enriched in heavy metals.
  • The use of solar energy as a renewable energy source will be explored.

The Project - 11C11B45

    More Information
 
 
 

 The Project - B56211CD

Dissemination Events

 

85th Thessaloniki International Fair 

DELTA Participation - Project's Results Presentation

 

 

Participation in CDI&E 2021 Atlanta conference



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