Separation of l-lysine from dilute aqueous solution using molecular imprinting technique |
| |
| Affiliation: | 1. Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China;2. Jiuquan Enviromental Protection Bureau, Jiuquan 735000, China;1. Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Material Science, Tianjin University of Science and Technology, Tianjin TEDA 300457, PR China;2. Hubei Sky-lake Chemical Company of Limited, Hubei Tianmen City 431702, PR China;1. Poznan Life Sciences University, Department of Biotechnology and Food Analysis, 60-637 Poznan, ul. Mazowiecka 34, Poland;2. Poznan Life Sciences University, Department of Physics, 60-637 Poznan, ul. Wojska Polskiego 38/42, Poland;1. College of Environmental and Municipal Engineering, Qingdao Technological University, Qingdao 266033, China;2. Key Laboratory of Marine Spill Oil Identification and Damage Assessment Technology, North China Sea Environmental Monitoring Center of State Oceanic Administration, Shandong, Qingdao 266033, China;1. College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China;2. Zhejiang Chemical Industry Research Institute Co., Ltd, Hangzhou 310023, China |
| |
| Abstract: | In the present study, separation of l-lysine from dilute aqueous solution by solid-phase extraction based on molecular imprinting technique using a polar porogen was investigated. l-Lysine imprinted polymer (LLIP) was prepared by free radical solution polymerization of methacrylic acid and ethylene glycol dimethacrylate as functional and cross-linking monomers, in the presence of l-lysine as an imprint molecule, mixture of water and methanol as solvent and AIBN as an initiator. Non-imprinted polymer (NIP) as control was also prepared by the same procedure in the absence of template molecules. LLIP particles were applied to determine the optimum operational condition for l-lysine separation from dilute aqueous solution. In adsorption step, optimum pH and retention time were 7.8 and 90 min, while corresponding values in extraction step were 12 and 50 min, respectively. l and d-Lysine recovery by LLIP at optimum condition were found to be 96 and 58% with corresponding distribution coefficients of 8000 and 460, respectively. The retention capacity of LLIP was 27.26 mg l-lys/g of polymer at optimum condition. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
