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Enrichment of Feammox functional microorganisms and the strengthening effect of AQDS
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Dan-yang ZHU1, Si-yuan DIAO2, Hui GONG1, Xiao-hu DAI1
China Environmental Science | 2025, 45(7) : 3735 - 3741
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China Environmental Science | 2025, 45(7): 3735-3741
• Water Pollution Control •
Enrichment of Feammox functional microorganisms and the strengthening effect of AQDS
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Dan-yang ZHU1, Si-yuan DIAO2, Hui GONG1, Xiao-hu DAI1
Affiliations
  • 1.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
  • 2.College of Environmental Science and Chemical Engineering, Shanghai University of Electric Power, Shanghai 201306, China
Published: 2025-07-20
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Feammox functional microorganisms were enriched from anaerobic digestion sludge with NH4+-N and Fe(Ⅲ) supplementation and their long-term nitrogen removal performance was evaluated. Feammox activity was detected on day 66and remained stable in subsequent batches. The relative abundances of the potential Feammox functional bacteria Geobacter and Anaeromyxobacter increased by 457-fold and 11.6-fold, respectively. Metagenomic analysis revealed a significant increase in the total relative abundance of functional genes associated with three nitrite transformation pathways: ammonia oxidation to nitrite (amo, hao), nitrite denitrification to nitrogen gas (nirSK, norB, nosCZ), and nitrite reduction to ammonium (nirABD, nrfAH). The addition of the electron shuttle AQDS promoted extracellular electron transfer and enhanced the ammonia removal efficiency by 17.8%.

autotrophic nitrogen removal  /  feammox  /  AQDS  /  extracellular electron transfer  /  metagenomic analysis
朱丹阳, 刁思圆, 宫徽, 戴晓虎. 厌氧铁氨氧化功能微生物的驯化与AQDS强化作用. 中国环境科学, 2025 , 45 (7) : 3735 -3741 .
Dan-yang ZHU, Si-yuan DIAO, Hui GONG, Xiao-hu DAI. Enrichment of Feammox functional microorganisms and the strengthening effect of AQDS[J]. China Environmental Science, 2025 , 45 (7) : 3735 -3741 .
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Year 2025 volume 45 Issue 7
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Article Info
  • Receive Date：2024-12-23
  • Online Date：2026-10-08
  • Published：2025-07-20
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  • Received：2024-12-23
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Affiliations
    1.State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
    2.College of Environmental Science and Chemical Engineering, Shanghai University of Electric Power, Shanghai 201306, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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