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  • Title: Adsorption-desorption studies of indigocarmine from industrial effluents by using deoiled mustard and its comparison with charcoal.
    Author: Gupta VK, Jain R, Malathi S, Nayak A.
    Journal: J Colloid Interface Sci; 2010 Aug 15; 348(2):628-33. PubMed ID: 20570276.
    Abstract:
    Deoiled mustard obtained from local oil mills has been used as an inexpensive and effective adsorbent for the removal of indigocarmine dye from industrial effluents. The influence of various factors on the adsorption capacity has been studied by batch experiments. The adsorption studies validate both Langmuir and Freundlich adsorption isotherms. Thermodynamic parameters such as DeltaG degrees, DeltaH degrees, and DeltaS degrees for the adsorption process were calculated, which indicated the feasibility of the adsorption process. Desorption profiles revealed that a significant portion (85%) could be desorbed from deoiled mustard by using 30% glycerol as eluting agent.
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