Nutrient removal by Chlorella vulgaris F1068 under cetyltrimethyl ammonium bromide induced hormesis
Nutrient removal by Chlorella vulgaris F1068 under cetyltrimethyl ammonium bromide induced hormesis
复制标题
十六烷基三甲基溴化铵诱导毒物兴奋作用下小球藻 F1068 的营养去除
DOI：
10.1007/s11356-016-6999-0
复制
发表时间：
2016-07
期刊：
影响因子：
--
通讯作者：
匡扬铎
中科院分区：
文献类型：
--
作者：
李峰;葛飞;刘娜;匡扬铎
AbstractToxicants are generally harmful to biotechnology in wastewater treatment. However, trace toxicant can induce microbial hormesis, but to date, it is still unknown how this phenomenon affects nutrient removal during municipal wastewater treatment process. Therefore, this study focused on the effects of hormesis induced by cetyltrimethyl ammonium bromide (CTAB), a representative quaternary ammonium cationic surfactant, on nutrient removal by Chlorella vulgaris F1068. Results showed that when the concentration of CTAB was less than 10 ng/L, the cellular components chlorophyll a, proteins, polysaccharides, and total lipids increased by 10.11, 58.17, 38.78, and 11.87 %, respectively, and some enzymes in nutrient metabolism of algal cells, such as glutamine synthetase (GS), acid phosphatase (ACP), H+-ATPase, and esterase, were also enhanced. As a result, the removal efficiencies of ammonia nitrogen (NH4+) and total phosphorus (TP) increased by 14.66 and 8.51 %, respectively, compared to the control during a 7-day test period. The underlying mechanism was mainly due to an enhanced photosynthetic activity of C. vulgaris F1068 indicated by the increase in chlorophyll fluorescence parameters (the value of Fv/Fm, ΦII, Fv/Fo, and rETR increased by 12.99, 7.56, 25.59, and 8.11 %, respectively) and adenylate energy charge (AEC) (from 0.68 to 0.72). These results suggest that hormesis induced by trace toxicants could enhance the nutrient removal, which would be further considered in the design of municipal wastewater treatment processes.
Graphical abstractThe schematic mechanism of C. vulgaris F1068 under CTAB induced hormesis. Green arrows () represent the increase and the red arrow () represents the decrease.
登录
查看更多内容
影响因子：
2.8
作者：
Dai, Ruihua;Liu, Huijuan;Hou, Yining
通讯作者：
Hou, Yining
影响因子：
4.5
作者：
R. Regel;J. M. Ferris;G. Ganf;J. Brookes
通讯作者：
R. Regel;J. M. Ferris;G. Ganf;J. Brookes
影响因子：
5
作者：
D. Yan;Junbiao Dai;Qingyu Wu
通讯作者：
D. Yan;Junbiao Dai;Qingyu Wu
影响因子：
3
作者：
Liang Wang;M. Min;Yecong Li;Paul Chen;Yifeng Chen;Yuhuan Liu;Yingkuan Wang;R. Ruan
通讯作者：
Liang Wang;M. Min;Yecong Li;Paul Chen;Yifeng Chen;Yuhuan Liu;Yingkuan Wang;R. Ruan
影响因子：
5.1
作者：
P. Swapnil;Meenakshi Singh;Sweta Singh;N. Sharma;A. Rai
通讯作者：
P. Swapnil;Meenakshi Singh;Sweta Singh;N. Sharma;A. Rai