Preparation of mesoporous magnetic ion exchange resin and its removal performance —for the typical organic nitrogen derived from algae
LIU Cheng1,2, HE Si-yuan2, LIU Yu2, CHEN Wei1,2
1. Key Laboratory of Integrated Regulation and Resource Development Shallow Lakes, Ministry of Education, Hohai University Nanjing 210098, China;
2. College of Environment, Hohai University, Nanjing 210098, China
Mesoporous magnetic ion exchange resin (m-MIER) was synthesized using methyl acrylic glycidyl ester as monomer with the method of monomer polymerization. Its removal performance on the typical dissolved algal organic nitrogen was studied subsequent to some preliminary characterization. Magnetic ion exchange resin (MIEX®) was studied as a comparison simultaneously. The results showed that the lab synthetic m-MIER was mesoporous with the main pore diameter was from 2nm to 60nm, chloride was identified as the exchange group. Compared with MIEX®, m-MIER owned similar wet density, particle size, more abundant pore structure and greater exchange capacity (1.15g/cm3, 150~200μm, 0.1852cm3/g, 3.16mmol/g vs, 1.20g/cm3, 150~180μm, 0.0184cm3/g, 2.23mmol/g). The results of XPS indicated that the major component of the core was Fe3O4, and the m-MIER was quaternary ammonium anion exchange resin. The m-MIER exhibited better removal effects on the typical dissolved nitrogen derived algae cells compared with MIEX® and the removal rate was highly relevant with the categories of the dissolved organic nitrogen.
刘成, 何思源, 刘煜, 陈卫. 常介孔型磁性离子交换树脂的制备及其效能——针对典型藻源含氮有机物[J]. 中国环境科学, 2016, 36(3): 727-734.
LIU Cheng, HE Si-yuan, LIU Yu, CHEN Wei. Preparation of mesoporous magnetic ion exchange resin and its removal performance —for the typical organic nitrogen derived from algae. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(3): 727-734.
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