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首页> 外文期刊>Separation and Purification Technology >Adsorption of Ag(I) on glycidyl methacrylate/N,N'-methylene bis-acrylamide chelating resins with embedded iron oxide
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Adsorption of Ag(I) on glycidyl methacrylate/N,N'-methylene bis-acrylamide chelating resins with embedded iron oxide

机译：嵌入的氧化铁在甲基丙烯酸缩水甘油酯/ N，N'-亚甲基双丙烯酰胺螯合树脂上吸附Ag（I）

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摘要

Glycidyl methacrylate/N,N'-methylene bis-acrylamide (GMA/MBA) resins modified by embedded iron oxide (Fe_2O_3) were prepared.Amino and thiol functionalities were immobilized on the obtained resins.The uptake of Ag(I) by the resins using batch and column techniques was investigated.The oxide-containing resins showed higher uptake values relative to the corresponding oxide-free ones.The uptake of Ag(I) on the resins was found to follow pseudo second-order kinetics.The uptake process was investigated at different temperatures and DELTA H~o,DELTA S~o and DELTA G~o were calculated.Regeneration of the resins was achieved using thiourea,HNO_3 and acidified thiourea with HNO_3.Regeneration efficiency was found to be 98% over five cycles with no appreciable change in durability.
机译：制备了由嵌入的氧化铁（Fe_2O_3）改性的甲基丙烯酸缩水甘油酯/ N，N'-亚甲基双丙烯酰胺（GMA / MBA）树脂，将氨基和硫醇官能团固定在所获得的树脂上。使用批处理和柱技术进行了研究，含氧化物的树脂相对于相应的不含氧化物的树脂显示出更高的吸收值，发现树脂上的Ag（I）的吸收遵循伪二级动力学。在不同温度下进行了研究，并计算了DELTA H〜o，DELTA S〜o和DELTA G〜o。使用硫脲，HNO_3和酸化的硫脲与HNO_3进行了树脂的再生，在5个循环中再生效率为98％。耐久性没有明显变化。

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