Selective capture of cesium and thallium from natural waters and simulated wastes with copper ferrocyanide functionalized mesoporous silica.
Selective capture of cesium and thallium from natural waters and simulated wastes with copper ferrocyanide functionalized mesoporous silica.
复制标题
DOI：
10.1016/j.jhazmat.2010.06.019
复制
发表时间：
2010-10-15
影响因子：
13.6
通讯作者：
Yantasee, Wassana
中科院分区：
文献类型：
--
作者：
Sangvanich, Thanapon;Sukwarotwat, Vichaya;Wiacek, Robert J.;Grudzien, Rafal M.;Fryxell, Glen E.;Addleman, R. Shane;Timchalk, Charles;Yantasee, Wassana
研究了介孔二氧化硅(FC-Cu-EDA-SAMS™)上的亚铁氰化铜与铁(II)(难溶的普鲁士蓝)对天然水和模拟酸碱废物中铯(Cs+)和铊(Tl+)的去除效果。在pH 0.1-7.3范围内，FC-Cu-EDA-SAMs对Cs和Tl有较大的亲和力，受溶液pH、竞争阳离子和基质的影响较小。SAMMS在吸附容量(例如，在酸性废物刺激剂(pH 1.1)中的吸附容量为21.7 mg Cs/g，在海水中的吸附容量为28.3 mg Cs/g，在海水中的吸附速度为5.8 mg TL/g)和吸附速度(例如，SAMMS在2分钟后从海水中去除超过95wt%的Cs，而使用普鲁士蓝只去除75wt%)方面也优于普鲁士蓝。SAMMS也有更高的稳定性(例如，接触时间2至24小时，溶解的铁减少2.5至13倍)。除了在环境方面的应用外，SAMMS还具有作为口服药物的巨大潜力，以限制放射性Cs和有毒TL在胃肠道的吸收。
Copper(II) ferrocyanide on mesoporous silica (FC-Cu-EDA-SAMMS™) has been evaluated against iron(III) hexacyanoferrate(II) (insoluble Prussian Blue) for removing cesium (Cs+) and thallium (Tl+) from natural waters and simulated acidic and alkaline wastes. From pH 0.1 – 7.3, FC-Cu-EDA-SAMMS had greater affinities for Cs and Tl and was less affected by the solution pH, competing cations, and matrices. SAMMS also outperformed Prussian Blue in terms of adsorption capacities (e.g., 21.7 versus 2.6 mg Cs/g in acidic waste stimulant (pH 1.1), 28.3 versus 5.8 mg Tl/g in seawater), and rate (e.g., over 95 wt% of Cs was removed from seawater after 2 min with SAMMS, while only 75 wt% was removed with Prussian Blue). SAMMS also had higher stability (e.g., 2.5 to 13-fold less Fe dissolved from 2 to 24 hr of contact time). In addition to environmental applications, SAMMS has great potential to be used as orally administered drug for limiting the absorption of radioactive Cs and toxic Tl in gastrointestinal tract.
登录
查看更多内容
影响因子：
5.4
作者：
Yantasee, Wassana;Fryxell, Glen E.;Porter, George A.;Pattamakomsan, Kanda;Sukwarotwat, Vichaya;Chouyyok, Wilaiwan;Koonsiripaiboon, View;Xu, Jide;Raymond, Kenneth N.
通讯作者：
Raymond, Kenneth N.
影响因子：
--
作者：
Fryxell, GE;Wu, H;Kelly, S
通讯作者：
Kelly, S
影响因子：
1.1
作者：
Karski, S;Witonska, I
通讯作者：
Witonska, I
影响因子：
56.9
作者：
Feng, X;Fryxell, GE;Kemner, KM
通讯作者：
Kemner, KM
影响因子：
56.9
作者：
KUBO, AS;ROSE, DJ
通讯作者：
ROSE, DJ