Anaerobic Biogranulation as Microbial Response to Substrate Adequacy
| العنوان: | Anaerobic Biogranulation as Microbial Response to Substrate Adequacy |
|---|---|
| المؤلفون: | Yue-Gen Yan, Joo-Hwa Tay |
| المصدر: | Journal of Environmental Engineering. 123:1002-1010 |
| بيانات النشر: | American Society of Civil Engineers (ASCE), 1997. |
| سنة النشر: | 1997 |
| مصطلحات موضوعية: | Environmental Engineering, Anaerobic sludge, Chemistry, Methanogenesis, Environmental engineering, Substrate (chemistry), Pulp and paper industry, Acclimatization, Granulation, Loading rate, Bioreactor, Environmental Chemistry, Anaerobic exercise, General Environmental Science, Civil and Structural Engineering |
| الوصف: | Microbial granulation was examined in four lab-scale upflow anaerobic sludge blanket (UASB) reactors under varied microbial load indices (MLIs). The dimensionless MLI is defined as the ratio of the sludge loading rate to the specific methanogenic activity, and represents the relative substrate sufficiency subjected to by the sludge. A synthetic feed consisting of glucose, peptone, and meat extract was used as substrate and anaerobic digested sludge as seed. The four reactors were designed with the same diameters yet different heights, aiming at achieving a different biological selection pressure (solely MLI) yet a similar physical selection pressure of the reactors. Granulation under the high MLIs of 0.8 and 0.6 developed well within three and four months of operation, respectively, whereas that under the low MLIs of 0.3 and 0.2 did not even after six months. The granulation process was characterized by three phases of acclimation, granulation, and maturation. The MLI provides a quantitative approach toward stepwise sludge loading rate increases during start-up, with the appropriate values of 0.6–0.8 for fast and well-proceeded granulation. |
| تدمد: | 1943-7870 0733-9372 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::473112e8a841d6b6cdc41a0ddb0f5e9a https://doi.org/10.1061/(asce)0733-9372(1997)123:10(1002) |
| رقم الأكسشن: | edsair.doi...........473112e8a841d6b6cdc41a0ddb0f5e9a |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Scitation. | تدمد: | 19437870 07339372 |
|---|