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首页> 外文期刊>Reactive & Functional Polymers >Studies on uptake behavior of Hg(II) and Pb(II) by amine modified glycidyl methacrylate-styrene-N,N '-methylenebisacrylamide terpolymer
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Studies on uptake behavior of Hg(II) and Pb(II) by amine modified glycidyl methacrylate-styrene-N,N '-methylenebisacrylamide terpolymer

机译:胺改性的甲基丙烯酸缩水甘油酯-苯乙烯-N,N'-亚甲基双丙烯酰胺三元共聚物对Hg(II)和Pb(II)的吸收行为的研究

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The removal of mercury and lead ions from aqueous solutions investigated by ethylenediamine, diethylenetriamine and tetraethylenepentamine functionalized polymeric adsorbent. The adsorbent was prepared by amination of terpolymer synthesized from glycidylmethacrylate, styrene and N,N'-methylenebisacrylamide. In the single metal species system (only mercury or lead ions are present) poly(glycidylmethacrylate-ethylenediamine) (PGMA-EDA), poly(glycidylmethacrylate-diethylenetriamine) (PGMA-DETA), and poly(glycidylmethacrylate-tetraethylenepentamine) (PGMA-TEPA) were found to adsorb lead or mercury ions with a slightly higher adsorption uptake capacity for lead than mercury ions. Among the three functionalized polymers poly(glycidylmethacrylate-diethylenetriamine) (PGMA-DETA) shows faster and higher adsorption capacity than poly(glycidylmethacrylate-ethylenediamine) (PGMA-EDA), poly(glycidylmethacrylate-tetraethylenepentamine) (PGMA-TEPA). The natural pH of both the metal ions was found to be most suitable for uptake. The uptake of Hg(II) and Pb (II) ions was investigated by using batch technique. The maximum adsorption capacities of Pb ions were predicted to be 4.74, 4.76 and 4.73 mmol/g and the maximum Hg(II) ion uptakes were found to be 4.76, 4.80 and 4.21 mmol/g respectively for PGMA-EDA, PGMA-DETA and PGMA-TEPA resins at their natural pH. The uptakes of Hg(II) and Pb(II) ions on the resins were found to follow Langmuir adsorption isotherm and pseudosecond order kinetics. (C) 2015 Elsevier B.V. All rights reserved.
机译:用乙二胺,二亚乙基三胺和四亚乙基五胺官能化的聚合物吸附剂研究了从水溶液中去除汞和铅离子的方法。通过胺化由甲基丙烯酸缩水甘油酯,苯乙烯和N,N'-亚甲基双丙烯酰胺合成的三元共聚物来制备吸附剂。在单一金属物种系统中(仅存在汞或铅离子),聚(甲基丙烯酸缩水甘油酯-乙二胺)(PGMA-EDA),聚(甲基丙烯酸缩水甘油酯-二亚乙基三胺)(PGMA-DETA)和聚(甲基丙烯酸缩水甘油酯-四亚乙基五胺)(PGMA-TEPA )被发现吸附的铅或汞离子的吸附能力比汞离子高。在三种官能化聚合物中,聚(甲基丙烯酸缩水甘油酯-二亚乙基三胺)(PGMA-DETA)显示出比聚(甲基丙烯酸缩水甘油酯-乙二胺)(PGMA-EDA),聚(甲基丙烯酸缩水甘油酯-四亚乙基五胺)(PGMA-TEPA)更快,更高的吸附能力。发现两种金属离子的天然pH最适合吸收。使用分批技术研究了Hg(II)和Pb(II)离子的吸收。 PGMA-EDA,PGMA-DETA和PGMA-EDA的最大吸附容量预计分别为4.74、4.76和4.73 mmol / g,Hg(II)离子的最大吸收量分别为4.76、4.80和4.21 mmol / g。 PGMA-TEPA树脂在其自然pH下。发现树脂上Hg(II)和Pb(II)离子的吸收遵循Langmuir吸附等温线和拟二级动力学。 (C)2015 Elsevier B.V.保留所有权利。

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