Coal is a polluting fuel. Solvent extraction helps in refining coals. Author's research group has developed a designer solvent i.e. N-methyl-2 pyrrolidone (NMP) containing catalytic amount of ethylenediamine (EDA) symbolized as e,N solvent, which led to the extraction of coal by synergistic way i.e. organo-refining. Organo-refining afforded the separation of coal into two added value products super clean coal (SCC) and residual coal (RC). SCC may be used to obtain carbon nanotubes, carbon nanocomposites, value added chemicals, liquid fuels etc. SCC may be catalytically gasified under milder conditions to obtain H2 for fuel cells. RC had larger porosity, surface area, higher swelling power and lower degree of cross-linking etc. Thus RC was found to be a good and inexpensive adsorbent to remove hazardous wastes from industrial wastewater. Thus organo-refining by using e,N designer solvent was found to be one of the good advanced separation engineering technique of cleaner coal technologies.

Advanced separation engineering of coal by Organo-refining for adding value

239th National Meeting (2010)

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