Silver Nanomaterial-Immobilized Desalination Systems for Efficient Removal of Radioactive Iodine Species in Water

被引：31
作者：
Shim, Ha Eun [1 ,2 ]
Yang, Jung Eun [3 ]
Jeong, Sun-Wook [4 ]
Lee, Chang Heon [1 ]
Song, Lee [1 ]
Mushtaq, Sajid [1 ,5 ]
Choi, Dae Seong [1 ]
Choi, Yong Jun [4 ]
Jeon, Jongho [1 ,5 ]
机构：
[1] Korea Atom Energy Res Inst, Adv Radiat Technol Inst, Jeongeup 56212, South Korea
[2] Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea
[3] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daejeon 34141, South Korea
[4] Univ Seoul, Sch Environm Engn, Seoul 02504, South Korea
[5] Univ Sci & Technol, Radiat Biotechnol & Appl Radioisotope Sci, Daejeon 34113, South Korea
来源：
NANOMATERIALS | 2018年 / 8卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
bioremediation; desalination; membrane; nanocomposite; radioactive iodine; silver nanomaterials; DEINOCOCCUS-RADIODURANS; NANOPARTICLES; HANFORD; RADIOIODINE; WASHINGTON; CAPTURE; IONS; HYPOTHYROIDISM; NANOCOMPOSITE; POPULATIONS;
D O I：
10.3390/nano8090660
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Increasing concerns regarding the adverse effects of radioactive iodine waste have inspired the development of a highly efficient and sustainable desalination process for the treatment of radioactive iodine-contaminated water. Because of the high affinity of silver towards iodine species, silver nanoparticles immobilized on a cellulose acetate membrane (Ag-CAM) and biogenic silver nanoparticles containing the radiation-resistant bacterium Deinococcus radiodurans (Ag-DR) were developed and investigated for desalination performance in removing radioactive iodines from water. A simple filtration of radioactive iodine using Ag-CAM under continuous in-flow conditions (approximately 1.5 mL/s) provided an excellent removal efficiency (>99%) as well as iodide anion-selectivity. In the bioremediation study, the radioactive iodine was rapidly captured by Ag-DR in the presence of high concentration of competing anions in a short time. The results from both procedures can be visualized by using single-photon emission computed tomography (SPECT) scanning. This work presents a promising desalination method for the removal of radioactive iodine and a practical application model for remediating radioelement-contaminated waters.
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页数：11
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