Removal of strontium from aqueous solutions by acrylamide-modified attapulgite

Removal of strontium from aqueous solutions by acrylamide-modified attapulgite
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丙烯酰胺改性凹凸棒石去除水溶液中的锶

DOI:
10.1007/s10967-019-06414-y
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发表时间:
2019-01
影响因子:
1.6
通讯作者:
Lin Yuanhui
Lin Yuanhui
中科院分区:
化学4区
文献类型:
--
作者:
Zuo Rui;Meng Li;Guan Xin;Wang Jinsheng;Yang Jie;Lin Yuanhui

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研究了丙烯酰胺改性聚苯乙烯(AMATP)对水中Sr(II)的去除效果。采用XRD、SEM和FTIR对AMATP进行表征,pH值和Sr(II)初始浓度是影响AMATP吸附Sr(II)的主要因素。共存离子的抑制作用顺序为Ca ~(2+)> Mg ~(2+)> Na ~+。Sr(II)在AMATP上的吸附过程为自发吸热过程,符合准二级吸附模型,符合Langmuir等温式。由于其高吸附容量和低成本,AMATP可以是一个有前途的候选人的Sr(II)吸附去除。
Removal of Sr(II) with acrylamide modified attapulgite (AMATP) from aqueous solutions was investigated. The AMATP was characterized by XRD, SEM and FTIR and the pH with Sr(II) initial concentration were controlling factors for Sr(II) sorption process. The inhibitory effects of coexisting ions have the order as Ca2+> Mg2+> Na+. The sorption process of Sr(II) on AMATP was spontaneous and endothermic and followed the pseudo second-order sorption model and fit well with the Langmuir isotherm. Owing to its high sorption capacity and low cost, AMATP can be a promising candidate for Sr(II) sorption removal.
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