کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1636751 | 1516960 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal decomposition of magnesium ammonium phosphate and adsorption properties of its pyrolysis products toward ammonia nitrogen
ترجمه فارسی عنوان
تجزیه تجمعی فسفات آمونیوم منیزیم و خواص جذب محصولات پیررولیز آن به سمت آمونیاک نیتروژن
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کلمات کلیدی
آمونیم فسفات منیزیم، منیزیم هیدروژن فسفات، تجزیه حرارتی، نیتروژن آمونیاک، خواص جذب،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
High-purity magnesium ammonium phosphate (MAP) was precipitated by controlling pH value of the reaction system of 9.0-9.5. The thermal decomposition behavior of MAP and the adsorption properties of its pyrolysis products toward ammonia-nitrogen were also studied by XRD, SEM, TGA-DTA and FT-IR methods. The results indicated that high-purity MAP was obtained at pH value of 9.0-9.5. Upon heating to 100-120 °C for 120 min, MAP was thermally decomposed, losing water and ammonia concomitantly with a reduction in grain size and crystallinity. The capacity of pyrolysis products for ammonia nitrogen adsorption reached 72.5 mg/g, with a removal rate of up to 95% from an 800 mg/L solution. The characteristic diffraction peaks corresponding to MAP mainly appeared in their XRD patterns after adsorption of ammonia nitrogen. The pyrolysis products of MAP at 100-120 °C could be recycling-used as the chemical treatment regents of ammonia nitrogen in the practical application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 2, February 2015, Pages 497-503
Journal: Transactions of Nonferrous Metals Society of China - Volume 25, Issue 2, February 2015, Pages 497-503
نویسندگان
Yi-qing CHEN, Jian-jun TANG, Wen-long LI, Zhen-hui ZHONG, Juan YIN,