التفاصيل البيبلوغرافية
| العنوان: |
Exclusive separation of Cu(II) with aminophosphonic acid-functionalized hydrogel from strong acidic media. |
| المؤلفون: |
Jiang, Yanni1 (AUTHOR) 1113672055@qq.com, Zhang, Weiguo1 (AUTHOR) 522022250139@smail.nju.edu.cn, Wang, Liting1 (AUTHOR) wangliting166@126.com, Lv, Yingzhi1 (AUTHOR) 1192906571@qq.com, Yue, Cailiang1 (AUTHOR) 2933827211@qq.com, Liu, Fuqiang1 (AUTHOR) lfq@nju.edu.cn, Li, Aimin1 (AUTHOR) liaimin@nju.edu.cn |
| المصدر: |
Journal of Cleaner Production. Oct2023, Vol. 422, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*WASTE recycling, COPPER, DENSITY functional theory, PHOSPHONIC acids, ADSORPTION capacity, HYDROGELS |
| مستخلص: |
Strong acidic heavy metal ions (HMIs) wastewater (pH < 3.0) is characterized by widespread source, mixed composition and high toxicity, which is extremely difficult to control and meet the requirements of HMIs separation and resource recovery. Herein, a novel aminophosphonic acid-functionalized hydrogel (CMC/PEI-P) was prepared successfully and applied to highly-selective separate Cu(II) from strong acidic media (SAM) (pH = 2.0). Thanks to the abundant and outward amino phosphonic acid groups, the maximum adsorption capacity and the initial adsorption rate constant were 119.41% and 116.64% higher than those of the precursor CMC/PEI. Most importantly, the exclusive separation with the super-high selectivity coefficients (+∞) could unexpectedly achieve with CMC/PEI-P even from the mixed polymetallic SAM. Furthermore, the purity of Co(II) in strong acidic cobalt-rich solution could be increased to more than 99.50%, with the benefit of about 200 times higher than the cost. The predominant mechanisms existed in the coordination with various active groups such as phosphonate, amine and hydroxyl. According to Density Functional Theory (DFT) calculations, the tetradentate coordination configuration with the best stability could be formed involving CMC/PEI-P and Cu(II). Therefore, this work explored a new pathway for the cost-effective separation and purification toward Cu(II) directly especially from SAM. [Display omitted] • Aminophosphonic acid-functionalized hydrogel was constructed by two-step procedure. • Exclusive separation for Cu(II) with high selectivity coefficient tending to +∞. • The abundant and outward groups contributed to the rapid adsorption of Cu(II). • Tetradentate coordination configuration was the most stable complex for Cu(II). [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Cleaner Production is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Business Source Index |
