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Tytuł:
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Effect of microplastic particle size to the nutrients removal in activated sludge system.
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Autorzy:
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He Y; School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Li L; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Song K; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. Electronic address: .
Liu Q; School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China.
Li Z; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
Xie F; School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China.
Zhao X; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. Electronic address: zhaoxiaoli_.
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Źródło:
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Marine pollution bulletin [Mar Pollut Bull] 2021 Feb; Vol. 163, pp. 111972. Date of Electronic Publication: 2021 Jan 19.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: 2003- : Oxford : Elsevier
Original Publication: London, Macmillan.
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MeSH Terms:
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Microplastics*
Sewage*
Bioreactors ; Denitrification ; Nitrification ; Nitrogen ; Nutrients ; Particle Size ; Plastics ; Waste Disposal, Fluid
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Contributed Indexing:
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Keywords: Denitrification; Microplastics; Nitrification; Nutrient removal; Particle size
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Substance Nomenclature:
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0 (Microplastics)
0 (Plastics)
0 (Sewage)
N762921K75 (Nitrogen)
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Entry Date(s):
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Date Created: 20210122 Date Completed: 20210217 Latest Revision: 20210217
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Update Code:
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20240105
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DOI:
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10.1016/j.marpolbul.2021.111972
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PMID:
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33482493
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Microplastics as emerging environmental pollutants, its effect to the bioprocess of water and wastewater treatment has aroused concern. This study investigated the effects of microplastic polystyrene (PS) particle size to the activated sludge nutrient removal process. The ammonia, nitrite, nitrate and phosphorus removal under various PS particle size during nitrification and denitrification process was tested. The results indicated that with PS particle size 150-300 μm, the ammonia oxidation during nitrification process was inhibited to 71%, 92%, and 80% as compared with the blank reactor, for PS concentration at 0.01 g/L, 0.05 g/L and 0.10 g/L, respectively. The nitrite accumulation during nitrification process was also high at PS particle size 150-300 μm and concentration no less than 0.05 g/L. The nitrate reduction during the denitrification process was all inhibited to 69%-94% as compared with the blank, except for reactor No.4. The phosphate removal during nitrification process was not affected by the existence of microplastics PS, the average removal rate was over 80% after 2 h and over 95% after 3 h, respectively. The microplastics particle size plays important role in affecting the activated sludge nutrient removal process.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
