Vol. 28, No. 4, 2009
Experimental Study and Modeling of supercritical Extraction of Nicotine from Tabacco Leaves
Karbalaie, Narjes Sadat
Department of Chemical Engineering, Science and Research Branch, Muslim Azad University, Tehran, I.R. IRAN
Ghotbi, Crrus*+; Taghikhani, Vaid
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, I.R. IRAN
Yamini, Yadollah
Department of Chemistry, Tarbiat Modarres University, Tehran, I.R. IRAN
ABSTRACT: In this work, the solubility of nicotine extracted from tobacco leaves, effect in the north of Iran, in supercritical carbon dioxide has been measured. Also the effects of pressure, temperature, extraction slashing time, and the organic co-Solvent on the quantity of nicotine extracted from tobacco leaves have been investigated. It should be stressed that in order to reduce significantly the numerate of experiments, the experiments have been specified based on the Taguchi observational design. The results obtained from the experiments showed that at the specified pressure, temperature, volume of modifier and dynamic time, the maximum amount of nicotine can be extracted. The experimental data collected in this research has been correlated using the Redlich-Kwong (R.
K) equation of state. The results showed that the conventional three-dimensional R.K equation of state can accurately correlate the experimental solubility data with good accuracy.
KEY WORDS: critical extraction, Nicotine, Tobacco leaves, Equation of state, RK.
INTRODUCTION Nicotine is an alkaloid found in nightshade family of plants (solanaceae), loosely in tobacco, and less in tomato, potato, eggplant and green-pepper. It is also found in coca leaves. Nicotine constitutes 0.3 to 5 % of tobacco plant by dry weight; with biosynthesis taking place in the root and accumulating in the leaves. The molecular structure of nicotine is presented in Fig. 1. * To whom arrangement should be...If you want to get a full essay, order it on our website: Ordercustompaper.com
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