文献详情
Adsorption of Sr(II) from water by mercerized bacterial cellulose membrane modified with EDTA
文献类型：期刊
期刊名称：Journal of hazardous materials影响因子和分区
年：2019
卷：364
页码：645-653
ISSN：1873-3336
关键词：Bacterial cellulose membrane,EDTA,Nanofibers,Radionuclide,Sr(2+)
所属部门：环境学院
摘要：The treatment of low-level radioactive wastewater is a critical and considerable challenge. Bacterial cellulose membrane (BCM) modified with ethylenediaminetetraacetic acid (EDTA) using (3-aminopropyl) triethoxysilane (APTES) as a crosslinker were used to remove Sr2+ in this work. SEM, XPS, and FTIR were used to characterize the morphology, structure, chemical shift, and functional groups of the as-prepared adsorbent. The synthesized BCM@APTES-EDTA presented a three-layer structure of membrane-n ...More
The treatment of low-level radioactive wastewater is a critical and considerable challenge. Bacterial cellulose membrane (BCM) modified with ethylenediaminetetraacetic acid (EDTA) using (3-aminopropyl) triethoxysilane (APTES) as a crosslinker were used to remove Sr2+ in this work. SEM, XPS, and FTIR were used to characterize the morphology, structure, chemical shift, and functional groups of the as-prepared adsorbent. The synthesized BCM@APTES-EDTA presented a three-layer structure of membrane-net-membrane with nano-sized fibers (<100?nm). The adsorption of Sr2+ onto BCM@APTES-EDTA was investigated as a function of contact time and initial concentration of Sr2+. Results showed that the adsorption of Sr2+ followed the pseudo second-order kinetic model (R2?=?0.999), and fitted well with the Langmuir isotherm model (R2?=?0.996). The maximum adsorption capacity was calculated to be 44.86?mg?g-1, which was comparable to other adsorbents. Additionally, the mechanism of Sr2+ adsorbed by the as-prepared adsorbent was studied through FTIR and XPS analysis, which indicated that the tertiary amines and carboxylate from grafted EDTA participated in the adsorption of Sr2+.Copyright ? 2018 Elsevier B.V. All rights reserved. ...Hide

DOI：10.1016/j.jhazmat.2018.10.083
百度学术：Adsorption of Sr(II) from water by mercerized bacterial cellulose membrane modified with EDTA
语言：外文
人气指数：2
浏览次数：2
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Adsorption of Sr(II) from water by mercerized bacterial cellulose membrane modified with EDTA.Cheng Rong, Kang Mi, Zhuang Shuting, et al. .Journal of hazardous materials. 2018, 364, 645-653.
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