摘要
借助化学改性手段合成以聚苯乙烯为骨架的氨基磷酸酯(SAPP)螯合树脂,利用红外光谱、比表面积仪等对树脂结构进行表征,考察了SAPP树脂的耐酸性、对铀的吸附与解吸性能。结果表明:溶液酸度接近100g/L(以硫酸计)时,SAPP树脂对铀的吸附容量可保持在110 mg/g(干)以上;在实际的铀矿石浸出液中,SAPP树脂对铀的吸附容量达60mg/g(干);用2mol/L硫酸溶液对负载铀的SAPP树脂进行静态淋洗,铀解吸率可达100%。
The amino methylene phosphonate chelating resin（SAPP）based on polystyrene matrixes was synthesized by chemical modification.The resin structure was characterized by infrared spectroscopy and specific surface area meter.Acid resistance,adsorption and desorption properties for uranium of the resin were examined.The results show when concentration of sulfuric acid is about 100g/L in uranyl solution,the adsorption capacity of resin for uranium is 110mg/g（dry）.The adsorption capacity of resin for uranium is 60mg/g（dry）in a certain uranium ore acidic leaching solution.It is easy to desorption uranium from the loading resin using 2mol/L sulfuric acid solution,and desorption ratio is about 100%.
出处
《湿法冶金》
CAS
北大核心
2016年第2期146-149,共4页
Hydrometallurgy of China
基金
国家自然科学基金青年科学基金资助项目(51104061)
关键词
氨基磷酸酯
螯合树脂
化学改性
耐酸性
铀
吸附
amino methylene phosphonate
chelating resin
chemical modification
acid resistance
uranium
adsorption
