2019 Engineering Sustainable Development
Development of Low Cost Deep Eutectic Solvents for Extraction of Polyphenols from Natural Waste
Authors
Anantharaj, R. - Presenter, SSN College of Engineering, Rajiv Gandhi Salai (OMR), Kalavakkam, Tamilnadu-603110.
M, V., SSN College of Engineering
P, S., SSN College of Engineering
Vivek, M. S., SSN College of Engineering
Cashew Nut Shell Liquid (CNSL) is a low-cost material for unsaturated phenol, which in terms a useful by product of cashew industry. The nuts has a shell of about 1/ 8 inch thickness inside which is a soft honey comb structure containing a dark reddish brown viscous liquid. These liquid contains phenolic compounds such as cardanol, anacardic acid, 2-methyl cardol. The first two compounds are monohydric phenol and others two compounds are dihydric phenol. The thoughtful process of these work includes extraction of phenolic compounds using low cost deep eutectic solvents (DESs). The extracted sample will be analyzed by UV, FTIR and NMR analysis for screening the potential solvent and generate phase equilibria diagram using the tie line composition for better understanding the solute-solvent interaction and determine the efficiency of the separation process at atmospheric conditions. The reliability and consistency of the experimental data will be evaluated by using Othmer-Tobias and Hand equation. The RMSD value are calculated for the predicted COSMO-RS tie-line data and experiment data. The effectiveness of extraction of cardanol using DESs are studied by COSMO-RS predictions along with the experimental LLE data with selectivity, distribution coefficient and performance index. The DFT method will be used to produce more reliable geometries for hydrogen-bond formation in the mixture of solvent and Phenolic compounds. On the other hand, the feasibility test was carried out for solvent regeneration and reuse which makes water insensitive solvent attractive process involving multiple cycles.