کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7841589 | 1506503 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Macroscopic and molecular investigations of immobilization mechanism of uranium on biochar: EXAFS spectroscopy and static batch
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A new environmentally friendly and low-cost adsorbent was produced from the camphor tree leaves (BC@CTL) and used to remove U(VI) from waste water via batch capture experiments under varying pH, time, and U(VI) concentration. The resultant biochar was characterized by SEM, BET, zeta-potentials, and FTIR spectroscopy. The capture process was strongly dependent on pH and independent of ionic strength. The capture experimental results indicated that U(VI) was quickly captured to BC@CTL with a maximum capture capacity of 0.41â¯mmolâ¯U(VI) gâ1 obtained by Langmuir model fitting. The results of EXAFS analysis revealed that the interaction mechanism of U(VI) on the BC@CTL was primarily controlled by inner-sphere surface complexation. The investigation was meaningful for the “treating wastewater with wastes” strategy implementation, especially biochar can be regarded as a promising candidate for the pre-concentration and immobilization of radionuclides from aqueous solutions in environmental remediation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 269, 1 November 2018, Pages 64-71
Journal: Journal of Molecular Liquids - Volume 269, 1 November 2018, Pages 64-71
نویسندگان
Xue Li, Hui Pan, Mei Yu, Muhammad Wakeel, Jie Luo, Njud S. Alharbi, Qing Liao, Juan Liu,