کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4979905 1367815 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective removal of cesium by ammonium molybdophosphate - polyacrylonitrile bead and membrane
ترجمه فارسی عنوان
حذف انتخابی سزیم توسط مولیبدوفسفات آمونیوم - پلیاکرولنیتیلل و غشاء
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
The selective removal of radionuclides with extremely low concentrations from environmental medium remains a big challenge. Ammonium molybdophosphate possess considerable selectivity towards cesium ion (Cs+) due to the specific ion exchange between Cs+ and NH4+. Ammonium molybdophosphate - polyacrylonitrile (AMP-PAN) membrane was successfully prepared for the first time in this study. Efficient removal of Cs+ (95.7%, 94.1% and 91.3% of 1 mg L−1) from solutions with high ionic strength (400 mg L−1 of Na+, Ca2+ or K+) was achieved by AMP-PAN composite. Multilayer chemical adsorption process was testified through kinetic and isotherm studies. The estimated maximum adsorption capacities even reached 138.9 ± 21.3 mg g−1. Specifically, the liquid film diffusion was identified as the rate-limiting step throughout the removal process. Finally, AMP-PAN membrane could eliminate Cs+ from water effectively through the filtration adsorption process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 324, Part B, 15 February 2017, Pages 753-761
نویسندگان
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