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The effect of natural materials used as sediment remediation on phosphorus and nitrogen control in a mesocosm
Tang,Mengjuan1; Deng,Qinghui2,3; Li,Xiaowen2,3; Cao,Xiuyun2; Zhang,Zhimin2; Zhou,Yiyong2; Sun,Qingye1; Song,Chunlei2
Corresponding AuthorSong,Chunlei(clsong@ihb.ac.cn)
Source PublicationEnvironmental Sciences Europe
AbstractAbstractBackgroundAchieving nitrogen (N) and phosphorus (P) control in sediment remediation projects by adding natural materials is receiving increasing attention. In this study, different natural materials, including iron-rich clay minerals, calcite, kaoline, sugarcane bagasse and Phragmites detritus, were applied to test their effects on N and P in a mesocosm experiment.ResultsIron-rich clay minerals and Phragmites detritus had obvious advantages for P control; they resulted in almost undetectable levels of soluble reactive phosphorus (SRP) in the water column throughout the experiment. This finding can be explained by their strong P adsorption ability. The high level of available organic carbon in the sediment and water column after sugarcane bagasse addition provided enough electron donors for denitrification and dissimilatory nitrate reduction to ammonium (DNRA), which caused nitrate (NO3?-N) deficiency and ammonium (NH4+-N) accumulation in the water column. Additionally, this resulted in anaerobic conditions, further fuelling the release of P from iron-bound P induced by anoxia. Thus, the amount of sugarcane bagasse applied should be considered carefully in order to balance denitrification and DNRA as well as P releases. Calcite and Phragmites detritus are recommended as remediation materials for N removal based on their significant promotion of denitrification and limitation of DNRA, which resulted in low NO3?-N and NH4+-N levels. These results can be explained by the shifts in the functional microbial community composition and abundance after the addition of natural materials.ConclusionsIron-rich clay minerals and Phragmites detritus are promising sediment remediation materials for P immobilization due to their strong P adsorption ability. Taken together, the selection of sediment remediation materials should consider the N and P coupling relationship, to prevent NO3?-N removal from causing P leaching or NH4+-N accumulation.
KeywordSediment remediation Natural material Organic carbon Denitrification DNRA
WOS IDBMC:10.1186/s12302-020-00366-x
PublisherSpringer Berlin Heidelberg
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Document Type期刊论文
Corresponding AuthorSong,Chunlei
Affiliation1.Anhui University
2.Institute of Hydrobiology, Chinese Academy of Sciences; State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Algal Biology
3.University of Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Tang,Mengjuan,Deng,Qinghui,Li,Xiaowen,et al. The effect of natural materials used as sediment remediation on phosphorus and nitrogen control in a mesocosm[J]. Environmental Sciences Europe,2020,32(1).
APA Tang,Mengjuan.,Deng,Qinghui.,Li,Xiaowen.,Cao,Xiuyun.,Zhang,Zhimin.,...&Song,Chunlei.(2020).The effect of natural materials used as sediment remediation on phosphorus and nitrogen control in a mesocosm.Environmental Sciences Europe,32(1).
MLA Tang,Mengjuan,et al."The effect of natural materials used as sediment remediation on phosphorus and nitrogen control in a mesocosm".Environmental Sciences Europe 32.1(2020).
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