A high-effective method to separate nicotine from the tobacco-specific carcinogen 4-(methylnitrosamino)-1 -(3-pyridyl)-1-butanone (NNK) mixtures using electrodialysis
Shaolin Ge,Wei Li,Zhao Zhang,Chuanrun Li,Yaoming Wang
Abstract
The separation of nicotine and tobacco-specific N-nitrosamines is a tough problem in tobacco industry. In this study, separation of nicotine from 4-(methylnitrosamino) -1-(3-pyridyl)-1-butanone (NNK) mixtures was investigated using electrodialysis by taking the principle of the protonation status difference between these two components. The results indicated that the solution pH has a dominant impact on the separation process. In a pH range of 5-7, nicotine molecules are existed as mono- and di-protonated ions and can be separated from the uncharged NNK molecules. The acidic electrolyte is conducive to the separation process from the point of flux and energy consumption; while the alkaline electrolyte has negative impact on the separation process. A current density of 10 mA/cm2 is an appropriate value for the separation process. The lowest energy consumption of the separation process is 0.58 kWh/kg nicotine with the process cost to be estimated at only $0.208 /kg nicotine. Naturally, electrodialysis is a high-efficiency, cost-effective, and environmentally friendly process to separate and purify nicotine from tobacco juice.
Key Words
4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK); nicotine; electrodialysis; ion exchange membranes
Address
Shaolin Ge, Chuanrun Li and Yaoming Wang — CAS Key Laboratory of Soft Matter Chemistry, Laboratory of Functional Membranes, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
Shaolin Ge and Zhao Zhang — China Tobacco Anhui Industrial Co., LTD, Hefei, Anhui, 230088, P.R. China
Chuanrun Li and Yaoming Wang, Wei Li — Hefei ChemJoy Polymer Materials, Co., LTD, Hefei, Anhui, 230601, P.R. China
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