کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10372730 | 877824 | 2011 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of copper ion on the anaerobic and aerobic metabolism of phosphorus-accumulating organisms linked to intracellular storage compounds
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of copper ion on the anaerobic and aerobic metabolism of phosphorus-accumulating organisms linked to intracellular storage compounds Effect of copper ion on the anaerobic and aerobic metabolism of phosphorus-accumulating organisms linked to intracellular storage compounds](/preview/png/10372730.png)
چکیده انگلیسی
The shock load effect of heavy metals (Cu (II)) on the behavior of poly-phosphate-accumulating organisms (PAOs) was investigated with respect to the transformations of poly-P, intracellular polyhydroxyalkanoates (PHAs) and glycogen. The PAOs biomass was exposed to different concentrations of Cu (II) at various pH and biomass levels. The results showed that when the mixed liquor suspended solid (MLSS) concentration was 2500-4000 mg/L, the P removal was not adversely affected by spiking with 2 mg Cu2+/L; however, it deteriorated completely after a Cu (II) shock concentration of 4 mg/L. Nevertheless, the tolerance of PAOs biomass to Cu (II) shock could be enhanced by increasing the MLSS. Moreover, in the presence of 2 mg Cu2+/L, the P removal efficiency was highest at an initial pH of 6.2 and lowest at an initial pH of 6.9, indicating that the Cu inhibitory effect was reduced by increasing the pH to 7.6. The inhibition by Cu (II) was related to the transformation of intracellular storage compounds of PAOs. Specifically, poly-P degradation might be inhibited, which reduced the energy available for PHA production and eventually led to poor P removal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 186, Issue 1, 15 February 2011, Pages 313-319
Journal: Journal of Hazardous Materials - Volume 186, Issue 1, 15 February 2011, Pages 313-319
نویسندگان
Yayi Wang, Zhongjia Ren, Fan Jiang, Junjun Geng, Weitao He, Jian Yang,