کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6368154 | 1316921 | 2011 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
To operate an anaerobic digester at low hydraulic retention time (HRT) is welcome in practice. This study characterized the extracellular biological organic matter (EBOM) and supernatant organics for a sewage sludge digested in a lab-scale mesophilic digester (5Â l) running at an HRT of 20, 15 or 10Â d. The hydrophilic and hydrophobic acid fractions were the principal components in the sludge EBOM. The hydrolysis rates for hydrophobic acid fraction related EBOM at 10Â d HRT and that of hydrophilic fraction related proteins in supernatant at 20Â d HRT limited the anaerobic processes. Improved hydrolysis of soluble hydrophilic fraction assisted improving digester performance at 20Â d HRT. To shorten digestion HRT, efficiency of hydrophobic acid fraction hydrolysis has to be practiced.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 45, Issue 3, January 2011, Pages 1472-1480
Journal: Water Research - Volume 45, Issue 3, January 2011, Pages 1472-1480
نویسندگان
Liang-Liang Wei, Qing-Liang Zhao, Kai Hu, Duu-Jong Lee, Chun-Mei Xie, Jun-Qiu Jiang,