江苏省农业科学院机构知识库

Enhanced Nutrients Removal from Eutrophic Water by Aerobic Denitrifiers Assisting Floating Plants

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文献类型：外文期刊

作者： Gao, Shenghan ¹ ; Zhou, Qing ² ; Zhang, Zhiyong ² ; Wang, Yan ² ; Wen, Xuezheng ² ; Liu, Haiqin ² ; Zhang, Yingying ² ;

作者机构： 1.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Liuhe Observat & Expt Stn Natl Agr Environm, Nanjing 210014, Peoples R China

关键词： aerobic denitrifying bacteria; aerobic denitrification; floating plant remediation; eutrophication; nitrogen; phosphorus

期刊名称：POLISH JOURNAL OF ENVIRONMENTAL STUDIES （影响因子：1.8；五年影响因子：1.7 ）

ISSN： 1230-1485

年卷期： 2023 年 32 卷 3 期

页码：

收录情况： SCI

摘要： Accelerated eutrophication is one of the most serious problems confronting freshwater systems worldwide. More effective methods to reduce nutrients from eutrophic water with high nitrogen but low carbon source are now urgently needed. In this study, the methods of floating plant remediation and aerobic denitrification were combined for seeking an effective strategy. Four aerobic denitrifying bacteria were adopted. Each strain was co-cultured with Eichhornia crassipes, and then the effects of different combinations on the removal of nitrogen and phosphorus were compared. Meanwhile, their impacts on the growth and physiological characteristics of plants were also measured. The results showed that the association of aerobic denitrifying bacteria with E. crassipes was effective in enhancing the simultaneous removal of nitrogen and phosphorus. E. crassipes helped bacteria to eliminate the accumulation of nitrites under the condition of limited carbon sources. Cooperation between Rhizobium rosettiformans and E. crassipes exhibited the best remediation performance. The four aerobic denitrifying bacteria increased the plant growth and phosphorus content, and had different effects on the plant root activity, leaf chlorophyll, leaf soluble sugar and leaf soluble protein concentration. Although the overall nutrients removal efficiency was greatly improved by the synergic association, the percentage contribution of plant uptake remained constant.

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Enhanced Nutrients Removal from Eutrophic Water by Aerobic Denitrifiers Assisting Floating Plants

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