Pseudo-kinetics of batch extraction of Crotalaria juncea (Sunn hemp) seed oil using 2-propanol

Crotalaria juncea (Sunn hemp) is one of the popular fiber crops of India. Its seeds contain appreciable amount of bio-oil which has promising fuel characteristics. Batch kinetics of extraction of C. juncea oil has been carried out and some pseudo-kinetic models (two-site kinetic desorption model (TSKDM), one-site kinetic desorption model (OSKDM) and second order pseudo-kinetics) are used to validate the experimental outcome. It is found that pseudo-second order kinetics fits more suitably in this case of oil extraction which approves a two stage leaching process, starting with an intense dissolution and scrubbing of maximum oil at the beginning followed by a much slower diffusion stage to remove the residual oil.