کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7067832 | 1459887 | 2018 | 34 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The fate of trace organic contaminants during anaerobic digestion of primary sludge: A pilot scale study
ترجمه فارسی عنوان
سرنوشت آلودگی های آلی ردیابی در طول هضم بی هوازی لجن اولیه: یک مطالعه مقیاس آزمایشی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
A pilot-scale study was conducted to investigate the fate of trace organic contaminants (TrOCs) during anaerobic digestion of primary sludge. Of the 44 TrOCs monitored, 24 were detected in all primary sludge samples. Phase distribution of TrOCs was correlated well with their hydrophobicity (>67% mass in the solid phase when LogDâ¯>â¯1.5). The pilot-scale anaerobic digester achieved a steady performance with a specific methane yield of 0.39-0.92â¯L/gVSremoved and methane composition of 63-65% despite considerable variation in the primary sludge. The fate of TrOCs in the aqueous and solid phases was governed by their physicochemical properties. Biotransformation was significant (>83%) for five TrOCs with logDâ¯<â¯1.5 and electron donating functional groups in molecular structure. The remaining TrOCs with logDâ¯<â¯1.5 were persistent and thus accumulated in the aqueous phase. Most TrOCs with logDâ¯>â¯1.5 were poorly removed under anaerobic conditions. Sorption onto the solid phase appears to impede the biodegradation of these TrOCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 256, May 2018, Pages 384-390
Journal: Bioresource Technology - Volume 256, May 2018, Pages 384-390
نویسندگان
Hop V. Phan, Richard Wickham, Sihuang Xie, James A. McDonald, Stuart J. Khan, Hao H. Ngo, Wenshan Guo, Long D. Nghiem,