کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
640219 | 1456962 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Regeneration of a perchlorate-exhausted highly selective ion exchange resin: Kinetics study of adsorption and desorption processes
ترجمه فارسی عنوان
بازسازی رزین مبادله یون بسیار انتخابی پر کلرات اکسایش: مطالعه سینتیک فرآیند جذب و جذب
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کلمات کلیدی
جذب، مدل، تأیید مدل، تصفیه آب، مبادله ایون، پرکلرات،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Perchlorate is a stable and soluble ion that can last for decades in the environment and can cause a number of environmental and health issues. Perchlorate is commonly removed using highly-selective ion-exchange resins that are replaced after exhaustion and incinerated or disposed in a landfill since there is no viable regeneration method. The major limitations in regeneration of single use resins is achieving complete desorption of perchlorate. The sustainability of treatment processes for perchlorate contaminated water can be achieved by regenerating the exhausted resin. As the first step of resin bioregeneration study, research on the adsorption and desorption kinetics of the perchlorate ion from a strong base anion exchange resin was conducted. Different chemical reaction and diffusion models were analyzed using experimental data. Both adsorption and desorption experimental data were best described by the Pseudo-second order model with adsorption rate constants of 2 Ã 10â3 ± 0.001 (g/mg/min) and desorption rate constants of 5 Ã 10â2 ± 0.01 (g/mg/min). These results suggest that the rate limiting stage for adsorption and desorption of perchlorate ion into the resin can be chemisorption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 158, 28 January 2016, Pages 266-274
Journal: Separation and Purification Technology - Volume 158, 28 January 2016, Pages 266-274
نویسندگان
Johanna Faccini, Shelir Ebrahimi, Deborah J. Roberts,