کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4763313 | 1422962 | 2017 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct extraction of U(VI) from alkaline solution and seawater via anion exchange by metal-organic framework
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Directly extracting uranium from alkaline solution and seawater through an effective and economical method is still a challenging task. In this work, we for the first time propose a method of anionic exchange, based on a cationic MOF (metal-organic framework) adsorbent, namely Co-SLUG-35, to directly extract U(VI) from alkaline solution and seawater (South China Sea). The U(VI) adsorption experiments indicates that the EDS2â anions in Co-SLUG-35 can be completely replaced by U(VI) ions in an anionic manner, leading to an adsorption capability of 118Â mg/g from alkaline U(VI) solution and excellent extraction efficiency of 1.05Â mg/g from 1Â L actual seawater in the concentration of 5.35Â ppb. Most importantly, unlike other MOFs where degassing is primarily needed, however the use of present MOF need not any pretreatment. Moreover, ultrahigh selectivity towards U(VI) ions even over CrO42â and Clâ ions is also observed in Co-SLUG-35, suggesting its superior potential in extraction of uranium from seawater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 316, 15 May 2017, Pages 154-159
Journal: Chemical Engineering Journal - Volume 316, 15 May 2017, Pages 154-159
نویسندگان
Jian Qiang Li, Le Le Gong, Xue Feng Feng, Le Zhang, Hui Qiong Wu, Chang Sheng Yan, Yang Yang Xiong, Heng Ya Gao, Feng Luo,