화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.37, No.4, 707-715, April, 2020
DOI10.1007/s11814-019-0442-4  Export Citation
Zwitterion imprinted composite membranes with obvious antifouling character for selective separation of Li ions
Yao Lu1, Dongshu Sun1, 2, †, Yang Lu1, Yongsheng Yan1, and Bo Hu1
  • 1Ministry of Education, Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Changchun, 130103, China
  • 2Key Laboratory of Environmental Materials and Pollution Control, the Education Department of Jilin Province, Jilin Normal University, Siping, 136000, China
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A surface hydrophilic and antifouling imprinted composite membrane based on zwitterion and dopamine for selective adsorption Li+ from compound has great potential. We investigated the selective adsorption amount for lithium from high Mg2+ and low Li+; the resulting displayed both excellent adsorption amount of Li+ and high selective adsorption efficiency of the fabricated membranes from the compound. Relatively lower contact angle of 50.7° and higher membrane flux value of 11.78mL cm-2 min-1 were obtained, which indicated the imprinted composite membrane possessed high hydrophilicity. In the BSA protein adsorption experiments, the anti-pollution performance of the imprinted composite membrane was greatly improved. Moreover, the results on perm-selectivity and regeneration ability are 8.94 and 91.4%. Overall results suggest that zwitterion and dopamine can be considered effective for increasing the hydrophilicity and anti-pollution capacity. Moreover, the imprinted composite membranes could be used for selective adsorption of Li+ effectively.
Keywords:Antifouling;Membrane Separation;Selective Separation;Zwitterion;Li+
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