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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/wer.10855
|2 doi
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|a pubmed24n1181.xml
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|a (DE-627)NLM354547992
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|a (NLM)36949606
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Zhang, Hao
|e verfasserin
|4 aut
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|a Synergetic effects of pyrrhotite and biochar on simultaneous removal of nitrate and phosphate in autotrophic denitrification system
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 17.04.2023
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|a Date Revised 17.04.2023
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|a published: Print
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|a Citation Status MEDLINE
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|a © 2023 Water Environment Federation.
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|a In the trend of upgrading wastewater treatment plants, developing advanced treatment technologies for more efficient nutrient removal is crucial. This study prepared a pyrrhotite-biochar composite (Fex Sy BC) to investigate its potential for simultaneous removal of nitrate and phosphate under autotrophic denitrification conditions. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) were used to characterize the novel composite of Fex Sy @BC, which exhibited 9.2 mg N/(L·d) NO3 - -N reduction rate, 97.3% N2 production, and 81.8 mmol N/(kg·d) NO3 - -N material load with small solid/liquid ratio (0.008). The NO3 - -N removal with Fex Sy @BC was 1.2-2.2 times higher than that with pure iron sulfides or biochar or their mixtures, whereas the Δn(S)/Δn(N) of Fex Sy @BC was the lowest (1.80). Moreover, the PO4 3- -P reduction rate of Fex Sy @BC reached 3.23 mg P/(L·d), as high as that of pure pyrite or pyrrhotite. Thiobacillus was the most dominant denitrifying bacterium. Fex Sy @BC exhibited great promise for enhancing nutrient removal from secondary effluent without additional carbon source. PRACTITIONER POINTS: FexSy@BC enhanced nitrate and phosphate removal simultaneously. First-order kinetics and Monod model were fitted for denitrification with FexSy@BC. FexSy@BC had smaller molar ratio of sulfate release to nitrate removal. Thiobacillus was the dominant bacterium in FexSy@BC autotrophic denitrification. Synergistic effects on nutrients removal existed between biochar and pyrrhotite
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|a Journal Article
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|a autotrophic denitrification
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|a denitrification kinetics
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|a microbial community structure
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|a nutrient removal
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|a pyrrhotite-biochar composite
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|a Phosphates
|2 NLM
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| 650 |
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|a Nitrates
|2 NLM
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| 650 |
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|a biochar
|2 NLM
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| 650 |
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|a Charcoal
|2 NLM
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| 650 |
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|a 16291-96-6
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Sun, Min
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tian, Jing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Xiaoqing
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Yunan
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 95(2023), 4 vom: 05. Apr., Seite e10855
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
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|g volume:95
|g year:2023
|g number:4
|g day:05
|g month:04
|g pages:e10855
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|u http://dx.doi.org/10.1002/wer.10855
|3 Volltext
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