کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7066590 | 1459880 | 2018 | 39 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and prediction of organic nitrogen biodegradability during anaerobic digestion: A bioaccessibility approach
ترجمه فارسی عنوان
تشخیص و پیش بینی زیست تخریب زیستی نیتروژن آلی در طی هضم بی هوازی: رویکرد زیست پذیری
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کلمات کلیدی
هضم بی هوازی نیتروژن، آمونیوم، تجزیه زیستی، دسترسی بیواسطه،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Prediction of organic nitrogen mineralization into ammonium during anaerobic digestion is required for optimizing substitution of mineral fertilizer by digestates. The aim of this study was to understand organic nitrogen biodegradability and to investigate how it can be predicted from carbon biodegradability, and nitrogen bioaccessibility, respectively. Bioaccessibility was assessed using fractionation methods based on sequential extractions. Results showed that organic nitrogen was present in fractions whose bioaccessibility levels differed. Organic nitrogen and carbon biodegradability were also determined and compared. Results highlighted two groups of substrates: the first with an initial NH4+/TKNâ¯<â¯30%, whose carbon and nitrogen biodegradability are similar; the second with an initial NH4+/TKNâ¯>â¯30%, whose carbon and nitrogen biodegradability differ significantly. To enable prediction on all substrates, partial least square (PLS) regressions were carried out to link organic nitrogen bioaccessibility indicators to biodegradability. The models successfully predicted organic nitrogen biodegradability with a maximum prediction error of 10%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 263, September 2018, Pages 425-436
Journal: Bioresource Technology - Volume 263, September 2018, Pages 425-436
نویسندگان
Y. Bareha, R. Girault, J. Jimenez, A. Trémier,