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Oxygenation and synchronous control of nitrogen and phosphorus release at the sediment-water interface using oxygen nano-bubble modi fied material
Wang, JF; Chen, JG; Yu, PP; Yang, XH; Zhang, LJ; Geng, ZL; He, KK
2020
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume725Pages:-
Subtype期刊论文
AbstractSynchronously controlling the nitrogen (N) and phosphorus (P) release from sediments is an important basis for eutrophication management in lakes, but it is still a technical challenge at present. Loading nano-bubbles on the surface of natural minerals to increase dissolved oxygen(DO) level at the sediment- water interface (SWI) provides a possible solution to this problem. In this study, oxygen nano-bubble modified mineral (ONBMM) technology was developed, and its efficiency of oxygenation at the SWI and effect on the removal of internal nutrient input were evaluated under simulated conditions. The results showed that ONBMM effectively improved DO levels near the SWI; the highest concentration reached 6.55 mgL(-1). Meanwhile, adding ONBMM remarkably reduced the concentrations of total P(TP), total N(TN) and ammonia N(NH3-N) in the overlying water. Compared with the control group, the fluxes of TP, NH3-N, and TN loading from sediments in simulation cores treated with ONBMM reduced by 96.4%, 51.1%, and 24.9%, respectively. The high-resolution data obtained by DGT showed that ONBMM effectively inhibited the reduction and release of Fe\\P through increasing the oxygen level at the SWI. The results of 16S rRNA high-throughput sequencing showed that adding ONBMM strengthened the role of nitrobacteria, denitrifying bacteria, and ammonia oxidation bacteria at the SWI. The ONBMM technology provides a new tool to achieve oxygenation at the SWI and in situ control of internal pollution in eutrophic lakes. (C) 2020 Elsevier B.V. All rights reserved.
KeywordHYDROPHOBIC SURFACES NANOBUBBLES TRANSFORMATIONS STABILITY HYPOXIA EUTROPHICATION
DOI10.1016/j.scitotenv.2020.138258
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33058
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550002, Peoples R China
2.Guizhou Univ, Coll Resource & Environm Engn, Guiyang 550025, Peoples R China
3.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
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GB/T 7714
Wang, JF,Chen, JG,Yu, PP,et al. Oxygenation and synchronous control of nitrogen and phosphorus release at the sediment-water interface using oxygen nano-bubble modi fied material[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,725:-.
APA Wang, JF.,Chen, JG.,Yu, PP.,Yang, XH.,Zhang, LJ.,...&He, KK.(2020).Oxygenation and synchronous control of nitrogen and phosphorus release at the sediment-water interface using oxygen nano-bubble modi fied material.SCIENCE OF THE TOTAL ENVIRONMENT,725,-.
MLA Wang, JF,et al."Oxygenation and synchronous control of nitrogen and phosphorus release at the sediment-water interface using oxygen nano-bubble modi fied material".SCIENCE OF THE TOTAL ENVIRONMENT 725(2020):-.
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