Effective removal of Fe(II) impurity from rare earth solution using surface imprinted polymer
作者： Wen-Sheng Wang , Yan-Bin Li , Bao-Jiao Gao , Xiao-Wei Huang , Yong-Qi Zhang
DOI: 10.1016/J.CHERD.2013.05.006
关键词:
摘要: Abstract Rare earth is a very important resource. But, impurities, such as Fe 2+ , have great influence on the properties of rare material. In this paper, novel -ionic imprinted polyamine functionalized silica gel adsorbent was prepared by surface imprinting technique for selective adsorption from solution. Firstly, functional macromolecule polyethyleneimine (PEI) grafted onto surfaces particles, and PEI/SiO 2 formed. Secondly, ionic process carried out using ion template, Cr 3+ IIP-PEI/SiO prepared. The recognition were studied in detail, effects main conditions, amount crosslinking agent reaction time, property material examined. experimental results showed that possesses strong affinity, specific ability, excellent selectivity . capacity could reach to 0.334 mmol g −1 relative coefficients Pr Ce are 23.25 18.42, respectively. Besides, regenerated easily diluted hydrochloric acid solution eluent better reusability.
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