Dr A Ganesh of IIT-Bombay has synthesized a nanocarbon structures from cashew by pyrolysis . On heating the cashew nut shells (CNS), an residue, about 100oC, the pericardium fluid present in the shells oozes out and is collected (about 14-16% by weight). This is generally used for making resins and adhesives.
The partially de-oiled cashew nut shells are further heated up to about 280 degrees C to remove gases like carbon dioxide, carbon monoxide and water . Subsequent heating of the shells up to about 500 degrees C produces pyrolysis which are condensed to recover oil rich in cardanol.
In a relate project, Dr Ganesh has also developed a method of making aligned rope like nanocarbon structures with platelet like carbon units from cashew pyrolysis . The method comprises cracking the pyrolysis at 750°C to 900°C and at atmospheric pressure over a supported bimetallic catalyst comprising Co-Ni supported on silica and purifying the nanocarbon structures formed with an acid.