کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
640531 | 1456972 | 2015 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The properties of anaerobic ammonium oxidation (anammox) granules: Roles of ambient temperature, salinity and calcium concentration
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
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چکیده انگلیسی
In the present study, the effects of temperature, salinity and calcium concentration on the properties of anaerobic ammonium oxidation (anammox) granules were comparatively investigated using four upflow anaerobic sludge blanket (UASB) reactors. The results demonstrated that the metabolic pathway of the anaerobic ammonium oxidizing bacterium (AnAOB) with its inner structure was changed following the addition of salt. The reaction ratios shown a considerable change. Both low ambient temperature and cell lysis reduced the activity, diameter and strength of the granules. A calcium concentration of 152 mg Ca2+ Lâ1 protected AnAOB from lysis and deformation under salinity stress. The precipitation of calcium improved the strength and density of the anammox granules, resulting in amelioration of settleability but a reduction in the diameter and the ratio of volatile suspended solids to suspended solids. In addition, the precipitation of calcium also reduced the activity of AnAOB.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 147, 16 June 2015, Pages 311-318
Journal: Separation and Purification Technology - Volume 147, 16 June 2015, Pages 311-318
نویسندگان
Bao-Shan Xing, Qiong Guo, Guang-Feng Yang, Zheng-Zhe Zhang, Peng Li, Li-Xin Guo, Ren-Cun Jin,