کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7076631 | 1459976 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact resistance of different factors on ammonia removal by heterotrophic nitrification-aerobic denitrification bacterium Aeromonas sp. HN-02
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
To give reference for the application of heterotrophic nitrification-aerobic denitrification bacteria in actual wastewater treatment, the impact resistance of extreme pH, low temperature, heavy metals and high salinity on ammonia removal by a typical heterotrophic nitrifying-aerobic denitrifying bacterium Aeromonas sp. HN-02 was investigated. The results showed that HN-02 demonstrated strong acid- and alkali-resistance. In addition, it remained active at 5 °C, and the removal rates of ammonia and COD were 0.90 mg Lâ1 hâ1 and 22.34 mg Lâ1 hâ1, respectively. Under the same extent of immediate temperature drop, the temperature correction coefficients of ammonia, COD removal rates and cell growth rate were close. Moreover, HN-02 could survive in the solution containing 0.5 mg Lâ1 Cu2+ or 8 mg Lâ1 Zn2+, or 0.5 mg Lâ1 of equivalent Cu2+-Zn2+. Furthermore, efficient ammonia removal was retained at salinity below 20 g Lâ1, thus it could be identified as a halotolerant bacterium. At last, stronger stress resulted in higher ÎCOD/ÎTN ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 167, September 2014, Pages 456-461
Journal: Bioresource Technology - Volume 167, September 2014, Pages 456-461
نویسندگان
Maoxia Chen, Wenchao Wang, Ye Feng, Xiaohua Zhu, Houzhen Zhou, Zhouliang Tan, Xudong Li,