کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4909933 | 1427555 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of borate by layered double hydroxides prepared through microwave-hydrothermal method
ترجمه فارسی عنوان
حذف بورات با هیدروکسیدهای دو لایه که از طریق روش مایکروویو-هیدروترمال آماده می شوند
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Layered double hydroxide (LDH) is considered effective in borate removal from water solutions. In this work, LDHs were prepared by microwave-hydrothermal method, characterized by X-Ray diffraction (XRD) and transmission electron microscopy (TEM), and applied for borate removal from a water solution. The results suggested that the LDHs prepared by microwave-hydrothermal method had the smallest particles size compared with other LDHs synthesized by urea and traditional hydrothermal method. Due to size reduction, the LDHs prepared by microwave-hydrothermal method had a higher borate sorption capacity. Based on the results of the XRD pattern and 11B-NMR, the sorption mechanism of M-LDH is discussed in the paper. Ion-exchange was the predominant mechanism of borate removal, but surface sorption likely accompanied this process. In addition, the data obtained for the sorption of the three types of LDHs fitted well with the pseudo-second-order kinetic model and Langmuir sorption isotherm with a high correlation coefficient. The sorption amount of borate by M-LDH was 2.16Â mmol/g, which is higher than that absorbed by U-LDH and H-LDH. Furthermore, the co-existing anion, especially carbonate, plays a role in hindering the sorption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Water Process Engineering - Volume 17, June 2017, Pages 271-276
Journal: Journal of Water Process Engineering - Volume 17, June 2017, Pages 271-276
نویسندگان
Xinhong Qiu, Wu Wang,